ARADUR 46-1

ARADUR 46-1 is a low-viscosity polyamine-adduct epoxy curing agent developed for ambient-cure anti-corrosion coatings, epoxy mortars, floor coatings, industrial floorings and protective top coats. The commercial grade combines approximately 130-230 mPa·s viscosity at 25°C, an amine value of approximately 310-340 mg KOH/g, an active-hydrogen equivalent weight of approximately 95 g/eq and an approximately 38-minute reference gel time with strong wetting, self-leveling, surface-smoothing and chemical-resistance performance. ARADUR 46-1 is especially useful in civil-engineering and industrial-maintenance epoxy systems where relatively fast ambient cure, low handling viscosity, good color stability and durable mechanical and corrosion-protection properties are required.

PRODUCT IDENTITY

Product name: ARADUR 46-1
Product type: Epoxy curing agent / hardener
Chemical family: Polyamines
Specific chemistry: Polyamine adduct
Physical form: Liquid
Appearance: Low-viscosity liquid
Color: Gardner ≤3
Viscosity at 25°C: Approximately 130-230 mPa·s
Amine value: Approximately 310-340 mg KOH/g
Active hydrogen equivalent weight: Approximately 95 g/eq
Reference gel time: Approximately 38 minutes with ARALDITE GY 250 under the published selector comparison method
Primary cure mode: Ambient-temperature cure
Primary functions: Curing agent, hardener and crosslinker
Primary current end uses: Anti-corrosion coating, epoxy mortars, floor coatings, floorings and top coats
Primary established application sectors: Civil engineering and industrial maintenance
Current labeling claims: Nonylphenol-free and Substances of Very High Concern chemicals-free
Current product features: Chemical resistance, enhanced surface smoothness, good color stability, good wetting properties, high smoothness, improved curing, low viscosity and self-levelling
Typical resin classes: Compatible liquid and solid epoxy resins selected according to epoxy equivalent weight and intended application
Typical substrate classes: Concrete, mineral substrates and properly prepared steel or other metallic substrates in compatible formulations
Storage guidance: Dry place, preferably in the sealed original container, approximately 2-40°C and protected from direct sunlight
Density: Use the current product-specific TDS or SDS; no sufficiently reliable current public value was verified for this profile
Flash point: Use the current product-specific SDS; no sufficiently reliable current public value was verified for this profile
Benzyl alcohol status: Do not claim benzyl-alcohol-free without current product-specific confirmation
CAS Number: Proprietary commercial polyamine-adduct formulation; no single universal CAS number should be assigned to the complete trade grade without the current SDS
EC Number: Commercial formulation; no single universal EC number should be assigned without product-specific confirmation
Molecular Formula: Not applicable to the complete commercial formulation
Molecular Weight: Variable / not applicable as one fixed value

Synonyms: ARADUR 46-1, Polyamine Adduct, Polyamine-Based Epoxy Curing Agent, Polyamine Hardener, Epoxy Hardener, Epoxy Curing Agent, Epoxy Resin Hardener, Amine Adduct Curing Agent, Ambient-Cure Polyamine Adduct, Polyamine Crosslinker, Flooring Epoxy Hardener, Anti-Corrosion Epoxy Hardener, Self-Leveling Epoxy Hardener, Industrial Maintenance Epoxy Hardener
ARADUR 46-1 should be treated as a proprietary commercial curing-agent formulation rather than as one pure molecular substance. Functional properties such as AHEW, amine value, viscosity, color and reference gel time provide a more useful technical description than an invented single molecular formula. Formal component identity, concentration ranges, hazard classification and transport status should be taken from the current product-specific SDS.

WHAT IS ARADUR 46-1?

ARADUR 46-1 is a polyamine-adduct hardener designed for two-component epoxy systems that need relatively fast ambient cure without sacrificing application flow or final protective performance.
Its very low viscosity for a formulated amine hardener makes it easy to mix into liquid epoxy resin and helps the binder wet concrete pores, steel profile, fillers and mineral aggregate.

The product is particularly well suited to flooring, mortar and protective-coating systems because wetting, self-leveling and surface smoothness are important in those applications.
Current product positioning emphasizes anti-corrosion coatings, epoxy mortars, floor coatings, floorings and top coats, while selector literature also places the grade in civil-engineering and industrial-maintenance systems.
ARADUR 46-1 should not be treated as interchangeable by equal weight with ARADUR 43-1, ARADUR 46-2 S or other amine hardeners. Each grade has its own AHEW, amine value, viscosity and cure profile.

POLYAMINE ADDUCT CHEMISTRY

A polyamine adduct is produced by partially reacting amine functionality before the final curing agent is supplied. This controlled pre-reaction modifies molecular size, compatibility, viscosity and cure behavior.
The commercial adduct still contains reactive amine hydrogens capable of opening epoxy rings and building a crosslinked network.
Compared with a simple neat amine, an adduct can provide more balanced handling, surface cure and compatibility while reducing the extreme volatility or aggressiveness associated with some low-molecular-weight amines.

ARADUR 46-1 combines the practical processing advantages of low viscosity with a relatively concentrated active-hydrogen content of approximately 95 g/eq AHEW.
Because the product is formulated and proprietary, the exact molecular distribution should not be simplified to one pure chemical identity.

HOW EPOXY CURING WORKS

Epoxy resins contain strained oxirane rings. Reactive amine hydrogens in ARADUR 46-1 attack these rings and form carbon-nitrogen bonds together with hydroxyl groups.
Repeated reaction between multifunctional resin and multifunctional hardener creates a three-dimensional thermoset network.
The mixture first remains fluid, then increases in molecular weight and viscosity, reaches gelation and finally develops a solid crosslinked structure.
Cure continues after the film becomes tack-free or the mortar appears hard. Final chemical resistance, water resistance, adhesion and mechanical strength continue developing as conversion rises.
Temperature, resin functionality, pigment or filler package, batch size and hardener ratio all influence the cure profile.

LOW VISCOSITY

Low viscosity is one of the defining product features of ARADUR 46-1.
The published range of approximately 130-230 mPa·s at 25°C is low enough to support easy pumping, weighing, mixing and incorporation into high-solids epoxy systems.
In flooring and mortar formulations, low viscosity improves wetting of sand, quartz, silica and other mineral aggregates.
In coatings, it can reduce the need for non-reactive solvent or excessive reactive diluent and can support smoother application.
Low viscosity also helps resin penetrate porous concrete and contact abrasive-blasted steel profile.
The final formulation may still require rheology modification for vertical coatings, mastics or high-build applications.

AMINE VALUE

ARADUR 46-1 has an amine value of approximately 310-340 mg KOH/g.
Amine value is a titration-based measure of basic nitrogen functionality expressed as an equivalent amount of potassium hydroxide.
It is useful for product identification and incoming quality control.
A major deviation can indicate contamination, dilution, aging or an incorrect material.
Amine value is not the same as active-hydrogen equivalent weight and should not replace AHEW in epoxy stoichiometric calculations.
Both values together provide a useful chemical fingerprint for the commercial hardener.

ACTIVE HYDROGEN EQUIVALENT WEIGHT

The active-hydrogen equivalent weight of ARADUR 46-1 is approximately 95 g/eq.
AHEW represents the mass of commercial hardener required to supply one equivalent of reactive amine hydrogen.
The theoretical hardener level can be estimated from the resin epoxy equivalent weight using the relationship 100 × AHEW / EEW.
For a resin with EEW 190 g/eq, the simple theoretical starting point is approximately 50 parts ARADUR 46-1 per 100 parts resin.
At resin EEW 185 g/eq, the calculated level is approximately 51.4 parts, while at EEW 200 g/eq the value is approximately 47.5 parts.
These calculations are only starting points. Commercial epoxy blends, reactive diluents and multifunctional resins can change the effective formulation requirement.

GEL TIME

Published selector data give ARADUR 46-1 an approximate 38-minute reference gel time with ARALDITE GY 250.
The value demonstrates relatively fast ambient-temperature cure while still allowing a practical working period in many coatings and mortar systems.
Gel time is not identical to pot life. A formulation can begin losing ideal flow, self-leveling or sprayability before formal gelation.
Large mixed batches can gel faster because epoxy-amine cure is exothermic and internal heat accelerates the reaction.
Thin films may behave differently because heat dissipates more efficiently and the application geometry affects film formation.
The final formulation should therefore establish practical working time independently.

AMBIENT-TEMPERATURE CURE

ARADUR 46-1 is intended for ambient-temperature epoxy cure.
Ambient cure is especially useful in civil engineering, flooring and industrial maintenance where oven curing is impractical.
Warm conditions shorten working time and speed hardness development.
Cool conditions extend pot life but slow final cure and can increase the time before full chemical or water resistance develops.
The complete system should be tested at the minimum and maximum intended application temperatures.
Rapid room-temperature cure should not be interpreted as instant full performance.

NONYLPHENOL-FREE CHARACTER

Current product labeling identifies ARADUR 46-1 as nonylphenol-free.
This supports formulations designed to avoid nonylphenol and related restricted alkylphenol chemistry.
The claim applies to the commercial hardener and should be supported by current product-specific documentation when used formally.
The complete epoxy formulation should still be reviewed because other raw materials can introduce substances that are not present in the hardener.
Nonylphenol-free status does not determine final VOC, hazard classification or regulatory compliance by itself.

SVHC-CHEMICALS-FREE CLAIM

Current product labeling also identifies ARADUR 46-1 as Substances of Very High Concern chemicals-free.
This is useful for formulators seeking raw materials aligned with restricted-substance programs.
Formal regulatory use of the claim should rely on current product-specific compliance documentation because regulatory candidate lists can change over time.
The status of the finished coating depends on every raw material in the formulation.
A raw-material labeling claim should therefore not be converted automatically into a blanket compliance statement for the final product.

COLOR STABILITY

Good color stability is a current product feature.
ARADUR 46-1 has a Gardner color limit of approximately 3 in published selector data.
This relatively low color is useful in pale flooring systems, light-colored primers and decorative industrial coatings.
The epoxy resin, fillers, pigments and exposure conditions also influence final color.
Conventional epoxy chemistry can yellow or chalk under prolonged ultraviolet exposure even when the hardener itself has good color stability.
Exterior decorative durability should therefore be assessed for the complete coating system.

GOOD WETTING PROPERTIES

Good wetting properties are a major advantage of ARADUR 46-1.
Wetting allows the uncured binder to spread across substrate microtexture and displace air at the interface.
On concrete, effective wetting helps the resin enter pores and irregularities and supports strong adhesion.
On steel, wetting of abrasive-blast profile improves intimate binder contact.
In epoxy mortars, the same property helps coat mineral aggregate and filler surfaces uniformly.
Wetting performance should still be supported by correct surface preparation because oil, dust or salts can prevent intimate contact.

SELF-LEVELLING PERFORMANCE

Self-levelling is a current product feature and is particularly relevant to flooring.
A self-leveling formulation must flow enough to smooth application marks before gelation but must retain enough body to resist filler settlement.
ARADUR 46-1's low viscosity and wetting behavior support this balance when combined with a suitable epoxy resin and rheology package.
The approximately 38-minute reference gel time provides useful cure speed but requires the floor area and batch size to be planned realistically.
Warm slabs or large batches can shorten working time and reduce leveling.
Rheology, filler loading and application temperature should therefore be optimized together.

ENHANCED SURFACE SMOOTHNESS

Enhanced surface smoothness and high smoothness are current product features.
A smooth cured surface results from good resin-hardener compatibility, low entrained air, controlled rheology and adequate open time before gelation.
Smoothness improves decorative appearance and can also reduce local thin spots or roughness that compromise barrier performance.
Defomer selection, roller technique and substrate outgassing can influence final surface quality.
The complete formulation should therefore be evaluated rather than attributing surface smoothness to the hardener alone.

IMPROVED CURING

Improved curing is another current product feature.
ARADUR 46-1 combines a relatively concentrated amine functionality with a moderate-fast reference gel time.
This can support early hardness development and practical turnaround in flooring, repair and industrial coating work.
The term improved curing should not be interpreted as universal low-temperature or high-humidity certification for every formulation.
Actual cure depends on resin chemistry, substrate temperature, film thickness and environmental conditions.
Application-specific qualification remains necessary.

CHEMICAL RESISTANCE

Chemical resistance is a current product feature and an important reason ARADUR 46-1 is used in industrial epoxy systems.
The final resistance profile depends on resin backbone, hardener ratio, crosslink density and cure completeness.
Properly cured systems can provide resistance to water, oils, cleaning agents and many industrial chemicals depending on formulation.
Strong acids, aggressive solvents, oxidizers and elevated-temperature exposure can be more demanding.
Splash, intermittent contact and continuous immersion should be evaluated as different service conditions.
Testing should use the actual chemical concentration and temperature expected in service.

CORROSION RESISTANCE

ARADUR 46-1 is currently positioned for anti-corrosion coatings.
The cured epoxy network creates a dense barrier that slows penetration of water, oxygen and dissolved ions toward a metal substrate.
Good wetting and strong adhesion help reduce pathways for underfilm corrosion.
Anti-corrosive pigments such as zinc phosphate and lamellar extenders can supplement binder performance when compatible.
Dry-film thickness, surface cleanliness and absence of pinholes remain critical.
Finished formulations should be validated by salt-spray, cyclic-corrosion or immersion tests appropriate to the intended service.

APPLICATIONS

Anti-corrosion coatings
Anti-corrosion coating is a primary current end use. ARADUR 46-1 can support strong adhesion, smooth film formation and chemical resistance when combined with a suitable epoxy resin and pigment package.

Epoxy mortars
Epoxy mortar is a primary current application. Low viscosity helps wet silica, quartz, sand and other mineral aggregate efficiently.

Floor coatings
Floor coatings are a primary end use. The self-levelling and surface-smoothing profile is especially useful in industrial and commercial flooring.

Floorings
Industrial flooring systems can use ARADUR 46-1 where abrasion resistance, chemical resistance, smoothness and fast ambient cure are required.

Top coats
Top coats are included in current product positioning. Exterior use should still consider the UV-weathering limitations of conventional epoxy chemistry.

Self-leveling floors
ARADUR 46-1 is well suited to compatible self-leveling epoxy formulations because low viscosity and good wetting support flow before gelation.

Industrial flooring
Factories, workshops and warehouses can use ARADUR 46-1 floor systems where mechanical durability and cleanability are required.

Chemical-resistant floors
Properly cured formulations can be designed for exposure to oils, cleaners, salts and selected chemicals after service-specific testing.

Decorative flooring
The relatively low color and smooth cured surface can support pigmented or decorative industrial flooring systems.

Quartz-filled floors
Silica or quartz aggregate can be incorporated to improve abrasion resistance and control cost.

Broadcast floors
Broadcast aggregate systems can use ARADUR 46-1 in primer, body or sealing layers when the recoat schedule is validated.

Epoxy screeds
Highly filled screeds can use the hardener where mixing and placement are completed within the available working time.

Floor toppings
Protective toppings can combine ARADUR 46-1 with graded aggregate for mechanical build and wear resistance.

Concrete primers
Low-viscosity epoxy systems can wet prepared concrete effectively and create a bonded base for later flooring or coating layers.

Primer-sealers
Porous mineral surfaces can use primer-sealers where penetration and adhesion are more important than high film build.

Concrete protective coatings
Industrial concrete can be protected against water, oils and selected process chemicals using compatible cured epoxy systems.

Concrete repair mortars
Filled repair compounds can use ARADUR 46-1 where ambient cure and strong adhesion are required.

Civil-engineering repair
Civil engineering is an established application sector. Crack repair, patching, bonding and protective mineral coatings can use compatible systems.

Industrial maintenance coatings
Industrial maintenance is an established application sector. Machinery, fabricated steel and plant structures can use compatible protective coatings.

Steel primers
Prepared steel can be protected with epoxy primer systems based on ARADUR 46-1.

Direct-to-metal coatings
DTM coatings can be formulated where primer adhesion and protective barrier performance are combined.

Structural-steel coatings
Industrial structures, beams and frames can use ARADUR 46-1 systems when surface preparation and corrosion testing are appropriate.

Machinery coatings
Machine frames, housings and equipment can use low-viscosity ambient-cure epoxy technology.

Equipment coatings
Process equipment and fabricated parts can use ARADUR 46-1 where chemical and mechanical durability are required.

Pipe coatings
Prepared steel pipe can use compatible anti-corrosion epoxy formulations for atmospheric and selected industrial exposure.

Tank exteriors
Exterior tank surfaces can use epoxy primers or intermediate coats beneath suitable weather-resistant finishes.

Barrier coatings
Dense binder films can reduce transport of moisture and ions through the coating.

Zinc-phosphate primers
Zinc phosphate and related inhibitive pigments can supplement epoxy barrier protection.

Lamellar-pigment primers
Mica and micaceous iron oxide can extend the diffusion path through a protective film.

High-build coatings
Low hardener viscosity can support high-solids high-build formulations when sag and exotherm are controlled.

High-solids coatings
ARADUR 46-1 can be used in high-solids epoxy systems where reduced external solvent demand is desired.

Solvent-free systems
Compatible liquid epoxy resins and additives can be combined with ARADUR 46-1 in solvent-free coating or mortar technologies when the current product 
composition supports the target formulation.

Low-VOC systems
Low viscosity can reduce the need for added solvent and support lower-VOC design.

Protective topcoats
Smooth film formation and good color stability make the grade relevant to industrial protective top coats.

Workshop floors
Workshop flooring can use ARADUR 46-1 where resistance to oils, cleaning and abrasion is required.

Warehouse floors
Warehouse floors can use self-leveling or aggregate-filled systems designed for heavy traffic.

Plant-room floors
Mechanical and utility areas can use durable epoxy floors where rapid ambient cure is useful.

Maintenance floor repair
Localized repairs can use mortars or toppings based on ARADUR 46-1 when pot life and exotherm are controlled.

Epoxy grouts
Filled grout formulations can use the low-viscosity hardener where resin wetting and aggregate loading are balanced.

Machinery-base grouts
Equipment-base grouts can use compatible ARADUR 46-1 systems where compressive strength and dimensional stability are validated.

Anchoring compounds
Epoxy anchor formulations can use polyamine-adduct cure where bond strength and working time meet installation requirements.

Adhesives
ARADUR 46-1 can be evaluated in reactive epoxy adhesive formulations where ambient cure and strong substrate wetting are useful.

Metal bonding
Prepared steel and aluminum can be bonded with compatible two-component epoxy formulations.

Concrete-to-metal bonding
Low binder viscosity can help wet both mineral and metallic surfaces in repair or reinforcement systems.

Construction adhesives
Civil-engineering adhesive applications can use the grade where ambient cure and chemical resistance are required.

Repair compounds
Filled repair compounds can use ARADUR 46-1 for industrial and civil-engineering maintenance.

Mastics
Thixotropic mastics can use the hardener when anti-sag structure is added to the low-viscosity binder.

Protective mastics
High-build protective materials can combine good wetting with fillers and corrosion pigments.

Factory-applied coatings
Controlled production environments can exploit the balance of low viscosity, fast cure and smooth surface development.

Production-line primers
Rapid ambient cure can shorten handling intervals when application and batch size are standardized.

Maintenance coatings for occupied facilities
Lower solvent demand can be advantageous where strong solvent odor is undesirable, subject to the composition of the complete system.

General industrial epoxy systems
Other applications are possible when resin compatibility, stoichiometry, pot life and service exposure are validated.

ARALDITE GY 250 REFERENCE SYSTEM

ARALDITE GY 250 is the reference resin used in published selector gel-time measurements for ARADUR 46-1.
The standardized comparison gives approximately 38 minutes gel time under the selector method.
The test is useful for comparing curing-agent reactivity but should not be treated as a universal production formulation.
A theoretical hardener demand near 50 parts per 100 parts resin would be expected if the resin EEW is around 190 g/eq and the hardener AHEW is 95 g/eq.
The exact practical ratio should come from current resin-specific formulation guidance or direct EEW/AHEW calculation.
Production validation should include pot life, flow, surface cure, hardness, adhesion and chemical resistance.

LIQUID EPOXY RESIN COMPATIBILITY

ARADUR 46-1 is highly suitable for compatible liquid epoxy resin systems because its own viscosity is very low.
Liquid resin systems can provide excellent concrete penetration, pigment wetting and self-leveling behavior.
The required hardener quantity depends on the actual resin EEW and any reactive diluents present.
Low mixed viscosity can be advantageous but can also increase sag or aggregate settlement if rheology is not controlled.
The resin-hardener pair should therefore be selected together rather than independently.

SOLID EPOXY RESIN COMPATIBILITY

ARADUR 46-1 can also be used in formulations based on suitable higher-molecular-weight or solid epoxy resins when these are supplied in a compatible processable form.
Higher-molecular-weight resin can improve film toughness and protective performance in industrial coatings.
Solvent or reactive-diluent requirements can differ substantially from liquid-resin systems.
Stoichiometry must be calculated using the actual epoxy equivalent weight of the selected resin.
Final film formation and cure should be checked under realistic application conditions.

MIX-RATIO CALCULATION

The theoretical resin-to-hardener ratio is calculated from resin epoxy equivalent weight and hardener AHEW.
The basic relationship is parts ARADUR 46-1 per 100 parts resin = 100 × 95 / resin EEW.
At EEW 180 g/eq, the calculated value is approximately 52.8 parts hardener.
At EEW 190 g/eq, the value is approximately 50.0 parts.
At EEW 200 g/eq, the value is approximately 47.5 parts.
Commercial formulation should still follow current resin-specific guidance because mixed resins, reactive diluents and intentional off-stoichiometric design can change the optimum level.

EFFECT OF HARDENER RATIO

Too little ARADUR 46-1 can leave unreacted epoxy functionality and reduce cure completeness.
Too much hardener can leave residual amine functionality and increase polarity or water sensitivity.
Off-ratio cure can affect hardness, flexibility, glass-transition behavior, chemical resistance and adhesion.
Accurate weighing is therefore important.
Ratio should not be changed simply to make the coating cure faster or slower without understanding the effect on the final network.
Any intentional adjustment should be supported by performance testing.

POT LIFE

The approximately 38-minute reference gel time shows that ARADUR 46-1 is relatively reactive.
Practical pot life can be shorter than gel time where excellent leveling, low spray viscosity or smooth flooring appearance is required.
Warm resin and hardener shorten the working window.
Large batches retain exothermic heat and can advance faster than laboratory samples.
Pigments and fillers can either accelerate or moderate apparent cure depending on chemistry and heat capacity.
Only the quantity that can be applied within the validated working period should be mixed.

EXOTHERM CONTROL

Epoxy-amine curing releases heat.
Large unfilled batches can self-heat and cure much faster than thin films.
Mineral-filled mortars usually generate a lower peak temperature because aggregate absorbs heat and reduces the fraction of reactive binder.
Small batch size is especially important in warm conditions.
Mixed resin and hardener should not be left reacting in a deep closed container.
Deep casting or grout applications should be qualified separately for maximum internal temperature.

SELF-LEVELING FORMULATION

Self-leveling flooring requires a controlled balance between flow and structure.
ARADUR 46-1's low viscosity helps the mixture spread and smooth before gelation.
The approximately 38-minute reference reactivity means batch size and floor area should be coordinated carefully.
Silica, quartz and fine mineral filler can be used to build body while preserving flow.
Associative or particulate rheology modifiers can reduce settling but excessive dosage can leave roller marks.
Air release should occur before viscosity rises significantly.

EPOXY MORTAR FORMULATION

Epoxy mortars combine resin-hardener binder with mineral filler or aggregate.
ARADUR 46-1's good wetting properties help coat aggregate efficiently.
A broad aggregate-size distribution can reduce binder demand and improve packing.
Dry clean aggregate is preferred because excess moisture can interfere with cure and bond strength.
Filler lowers shrinkage and can reduce exotherm.
The final mortar should remain workable long enough for placement, compaction and finishing.

FLOORING PERFORMANCE

Flooring systems need a balance of flow, hardness, toughness, abrasion resistance and chemical resistance.
ARADUR 46-1 supports smooth self-leveling surfaces and relatively fast cure.
Aggregate or filler can increase wear resistance and reduce cost.
Early hardness should not be confused with full chemical resistance.
Heavy traffic and aggressive chemical exposure should begin only after the validated cure period.
Substrate moisture, concrete preparation and primer selection remain critical to long-term flooring durability.

CONCRETE PREPARATION

Concrete should be structurally sound and free from weak laitance, oil, dust, curing compounds and loose material.
Mechanical preparation such as grinding or shot blasting can expose sound concrete and create a suitable surface profile.
Moisture condition should be evaluated before applying dense epoxy systems.
A low-viscosity binder can penetrate porous concrete effectively, but excessive absorption can starve the surface if primer design is poor.
Cracks and movement joints should be assessed separately because rigid epoxy repair is not appropriate for every active movement condition.

STEEL PREPARATION

Steel should be free from oil, soluble salts, rust and loose scale.
Abrasive blasting is commonly preferred for severe anti-corrosion service because it provides cleanliness and a defined anchor profile.
Residual chlorides can cause early underfilm corrosion even when the coating initially appears sound.
Prepared steel should be coated before significant recontamination or flash rust occurs.
The exact preparation standard should match the corrosion category and coating specification.

PIGMENT COMPATIBILITY

ARADUR 46-1 can be used in pigmented epoxy coatings when the pigment package is chemically compatible.
Titanium dioxide, iron oxides, zinc phosphate, barytes, talc, silica, mica and micaceous iron oxide are examples of pigment or filler classes that may be evaluated.
Pigment surfaces can adsorb amine, resin or dispersant and can alter cure speed or rheology.
High-shear grinding is generally completed before final hardener addition so the reactive two-component system is not processed for an unnecessarily long period.
The complete mixed coating should be checked for flocculation, pot life and viscosity stability.

ANTI-CORROSIVE PIGMENTS

Zinc phosphate and related inhibitive pigments can supplement the barrier properties of an ARADUR 46-1 epoxy binder.
Micaceous iron oxide and mica can increase the diffusion path for water and oxygen.
Pigment volume should be controlled so the cured film remains continuous rather than porous.
Soluble salts in fillers or pigments should be minimized for demanding steel protection.
Anti-corrosion performance should be validated on the complete coating rather than inferred from individual raw materials.

RHEOLOGY CONTROL

ARADUR 46-1 is very fluid, so final formulation rheology must be built deliberately.
Self-leveling flooring needs enough flow to smooth while retaining enough structure to keep fillers suspended.
Vertical coatings and mastics require stronger anti-sag behavior.
Fumed silica, organoclays, polymeric thixotropes or fine mineral fillers can be used where compatible.
Excessive structure can reduce wetting, air release and surface smoothness.
Rheology should be checked throughout practical pot life because cure itself increases viscosity.

DEFOAMING AND AIR RELEASE

Mixing, pigment dispersion and porous-substrate wetting can introduce air into epoxy systems.
Trapped bubbles can create craters, pinholes and weak spots in protective coatings or flooring.
ARADUR 46-1's self-leveling performance is best realized when air can escape before gelation.
Suitable defoamers can improve air release, but excessive dosage can cause surface defects or reduce intercoat adhesion.
Concrete outgassing can also be reduced by priming and by applying during stable or falling substrate temperature.

SURFACE SMOOTHNESS

Surface smoothness is strongly influenced by flow, deaeration and substrate condition.
ARADUR 46-1 is specifically associated with enhanced surface smoothness and high smoothness.
The low-viscosity hardener helps the binder level and fill microtexture.
Excess filler, short pot life or poor air release can reduce the benefit.
Smoothness should be evaluated together with dry-film thickness and mechanical performance rather than appearance alone.

ADHESION

Good wetting generally supports strong adhesion when the substrate is properly prepared.
Concrete adhesion depends on substrate strength and removal of weak surface material.
Steel adhesion depends on cleanliness, blast profile and salt control.
Low binder viscosity helps achieve intimate contact at the interface.
Adhesion should be measured after full cure and after relevant environmental exposure for critical applications.
A coating cannot compensate for a mechanically weak or contaminated substrate.

WATER RESISTANCE

Fully cured epoxy systems can provide good water resistance.
Early exposure to water before sufficient cure can produce whitening, softening or reduced adhesion.
Residual amine from excessive hardener can increase polarity and water sensitivity.
Flooring and protective coatings should therefore be allowed to cure adequately before washing or immersion.
Continuous immersion should be qualified separately from atmospheric humidity.
The epoxy resin backbone also has a major influence on final water resistance.

RECOATABILITY

Epoxy coatings have a finite recoat window.
Applying the next coat while the underlying film retains chemical reactivity can produce strong intercoat bonding.
After full cure, abrasion or surface preparation may be needed.
Dust, oil, salts or amine-derived deposits should be removed before recoating.
Warm conditions can shorten the maximum recoat interval because cure proceeds faster.
The complete coating specification should define minimum and maximum recoat times.

AMINE BLUSH

Amine-cured epoxy can form surface carbamates when reactive amines interact with moisture and carbon dioxide.
Blush can appear cloudy, greasy or waxy and can interfere with gloss and intercoat adhesion.
Current product positioning emphasizes improved cure and smoothness but does not eliminate the need to evaluate blush under actual environmental conditions.
Cool humid cure generally increases the risk.
Any suspicious surface deposit should be removed before subsequent coating.

WEATHERING

ARADUR 46-1 offers good color stability, but conventional epoxy resin still has limited long-term ultraviolet resistance.
Exterior exposure can cause yellowing, chalking or gloss loss.
For demanding outdoor decorative performance, epoxy primer or intermediate coats are commonly protected with a UV-resistant finish technology.
Indoor flooring and industrial maintenance often place greater emphasis on chemical and mechanical performance than sunlight resistance.
Weathering should be evaluated on the complete coating stack.

QUALITY CONTROL

Important quality-control parameters include appearance, Gardner color, viscosity, amine value and functional gel response.
Viscosity should be approximately 130-230 mPa·s at 25°C according to published product data.
Amine value should be approximately 310-340 mg KOH/g, AHEW approximately 95 g/eq and Gardner color no higher than approximately 3.
A standardized resin gel test can confirm the expected moderate-fast cure profile.
Density and flash point should be checked against the current product-specific SDS or TDS because reliable current public values were not verified for this profile.
Current product-specific specifications should govern incoming acceptance.

WHY VISCOSITY MATTERS

The 130-230 mPa·s viscosity range is central to the processing value of ARADUR 46-1.
Low viscosity improves metering, mixing, substrate wetting and filler incorporation.
Unexpectedly high viscosity can indicate low temperature, contamination or aging.
Unexpectedly low viscosity can indicate dilution or incorrect material.
Viscosity should be measured at the specified temperature and interpreted together with amine value and functional cure behavior.

WHY AHEW MATTERS

AHEW determines theoretical hardener demand relative to resin epoxy equivalent weight.
ARADUR 46-1 has an approximate AHEW of 95 g/eq.
Using the AHEW of ARADUR 43-1, ARADUR 46-2 S or another hardener would create a stoichiometric error.
A resin with EEW near 190 g/eq gives a theoretical starting point near 50 phr hardener.
Validated product-specific formulation data should override theoretical calculation where available.

WHY GEL TIME MATTERS

The approximately 38-minute reference gel time indicates useful reactivity for flooring and industrial maintenance.
A shorter gel time can increase productivity but reduces the application window.
Gel time is strongly affected by temperature, batch size and resin chemistry.
Practical working time should therefore be measured using the final formulation.
The application team should not rely on the material remaining visibly liquid as proof that it is still inside the optimum pot life.

BENZYL ALCOHOL STATUS

A benzyl-alcohol-free claim should not be made for ARADUR 46-1 without current product-specific confirmation.
Recent selector data list benzyl-alcohol-free status explicitly for certain other hardeners but do not mark ARADUR 46-1 with that designation.
This is more reliable than inferring composition from generic product-family descriptions.
The actual component list and concentration ranges should be taken from the current SDS.
Restricted-substance statements should never be created from assumption.

TDS, SDS AND COA

The current Technical Data Sheet should be used for present product specifications, application guidance and resin-specific recommendations.
The Safety Data Sheet governs formal component disclosure, hazard classification, first aid, firefighting, handling, transport and disposal.
The Certificate of Analysis provides batch-specific controlled values where supplied.
Published selector literature supports the approximately 130-230 mPa·s viscosity, 310-340 mg KOH/g amine value, 95 g/eq AHEW, 38-minute gel time and Gardner ≤3 data.
Current product pages support the present end-use, feature, nonylphenol-free and SVHC-chemicals-free positioning.
Where older and current information differ, the current product-specific document should take precedence.

SAFETY AND HANDLING

ARADUR 46-1 is a reactive amine curing agent and should be handled according to the current SDS.
Direct skin and eye contact should be avoided.
Chemical-resistant gloves, suitable eye protection and protective clothing should be selected through workplace risk assessment.
Ventilation should control vapor, mist or aerosol generated by the complete formulation.
Spray application can increase inhalation exposure even when the hardener itself has low volatility.
The exact flash point and transport classification should be taken from the current product-specific SDS.

FIRST AID

After skin contact, contaminated skin should be washed promptly according to current SDS guidance and contaminated clothing should be removed.
If product enters the eyes, immediate prolonged rinsing with clean water should begin and medical attention should be obtained according to the SDS.
If mist or aerosol is inhaled and symptoms occur, move the affected person to fresh air and obtain appropriate medical advice.
After accidental ingestion, follow current product-specific SDS instructions and professional medical guidance.

SPILL MANAGEMENT

Spilled ARADUR 46-1 can create a slippery surface and should be contained promptly.
Personnel should use suitable PPE and prevent the material from reaching drains or uncontrolled environmental pathways.
Compatible absorbent can be used for smaller spills, while larger releases may require pumping or specialized response.
Recovered product and contaminated absorbent should be placed in suitable labeled waste containers.
Cleanup should follow the current SDS and local waste requirements.

FIRE RESPONSE

ARADUR 46-1 is an organic amine formulation and can burn or decompose under severe heating.
The exact current flash point should be taken from the current product-specific SDS rather than inferred from related hardeners.
Thermal decomposition can generate hazardous fumes.
Firefighters may require self-contained breathing apparatus and appropriate protective clothing.
Extinguishing media and emergency procedures should follow the current SDS and site fire plan.

STORAGE

ARADUR 46-1 should be stored in a dry place, preferably in the sealed original container.
A storage temperature of approximately 2-40°C is used in current product guidance available through Ataman Chemicals.
Direct sunlight should be avoided.
Containers should remain tightly closed to prevent contamination and moisture or carbon-dioxide exposure.
Material should be conditioned to a suitable processing temperature before viscosity-sensitive metering.
The expiry date on the original container and current product-specific documentation should control shelf-life decisions.

REGULATORY CONSIDERATIONS

ARADUR 46-1 is a proprietary commercial polyamine-adduct curing agent.
Current product labeling identifies the grade as nonylphenol-free and Substances of Very High Concern chemicals-free.
These claims should be confirmed from current formal documentation when used for regulatory submissions or customer declarations.
Generic suitability for anti-corrosion coatings, floorings or epoxy mortars does not establish approval for food contact, potable water, medical devices or other specialized regulated uses.
Compliance must be assessed for the complete formulation and intended market.

ENVIRONMENTAL CONSIDERATIONS

Uncured reactive amine hardener should not be released directly to soil, drains or surface water.
Cleaning waste can contain resin, hardener, pigments, fillers and solvent or detergent and should be managed appropriately.
Low-viscosity high-solids formulation can reduce the need for external solvent, but environmental performance belongs to the complete coating.
Unused mixed resin and hardener can generate heat during cure and should not be accumulated in large uncontrolled masses.
Fully cured epoxy has different mobility and reactivity from uncured components, but disposal requirements remain jurisdiction-specific.

COMMON FORMULATION PROBLEMS

Pot life shorter than expected
Warm materials, large batch size, catalytic pigments or accelerators can shorten working time. Reduce batch size and standardize component temperature.

Poor self-leveling
Late-pot-life application, excessive filler loading or too much thixotrope can reduce flow. Apply promptly and optimize rheology.

Sagging
The hardener is very low in viscosity, so vertical formulations can sag if low-shear structure is insufficient. Increase compatible rheology control or reduce wet-film thickness.

Filler settlement
Low binder viscosity can allow dense fillers to settle. Improve particle-size balance and low-shear structure.

Foaming
High-speed mixing or porous-substrate outgassing can entrain air. Use controlled mixing, suitable defoamer and proper priming.

Pinholes
Entrained air or concrete outgassing can create pinholes. Improve air release and apply under stable substrate-temperature conditions.

Soft film
Incorrect mix ratio, incompatible resin or insufficient cure can leave the film soft. Verify resin EEW, hardener AHEW and cure conditions.

Brittle film
Too little hardener, excessive rigid filler or highly crosslinked resin can reduce toughness. Rebalance formulation and test impact resistance.

Poor adhesion
Oil, dust, salts, rust or weak concrete laitance can prevent bonding. Correct surface preparation before changing chemistry.

Poor corrosion resistance
Low dry-film thickness, pinholes, poor steel preparation or weak anti-corrosive pigment design can reduce protection. Test the complete system.

Low chemical resistance
Off-ratio cure, incomplete cure or unsuitable resin chemistry can reduce resistance. Allow full cure and test the actual chemical exposure.

Early water whitening
Water exposure before full cure can produce whitening or softening. Delay washing or immersion until the specified cure has developed.

Amine blush
Cool humid conditions can create surface deposits. Clean the surface before recoating if blush is present.

Intercoat adhesion failure
Overcure, contamination or blush can interfere with subsequent layers. Follow the validated recoat window and prepare fully cured surfaces.

Rough surface
Poor leveling, filler flocculation, foam or short open time can reduce smoothness. Review viscosity, dispersion and application timing.

Unexpected color variation
Resin, filler, cure temperature or raw-material aging can affect final color. Compare hardener Gardner color and full formulation rather than judging one 
component alone.

Unexpectedly high viscosity
Cold temperature or product change can raise viscosity. Condition the sample to 25°C and compare with the current specification.

Unexpectedly low viscosity
Dilution or contamination can lower viscosity. Check amine value and functional cure response.

Floor remains tacky
Incorrect stoichiometry, incompatible resin or cure conditions can delay surface set. Verify ratio and temperature rather than adding extra hardener blindly.

FREQUENTLY ASKED QUESTIONS

What is ARADUR 46-1?
ARADUR 46-1 is a low-viscosity polyamine-adduct epoxy curing agent for ambient-cure industrial systems.

What is the viscosity?
Approximately 130-230 mPa·s at 25°C.

What is the amine value?
Approximately 310-340 mg KOH/g.

What is the active hydrogen equivalent weight?
Approximately 95 g/eq.

What is the reference gel time?
Approximately 38 minutes with ARALDITE GY 250 under the published selector comparison method.

What is the Gardner color?
Approximately ≤3.

What are the main current applications?
Anti-corrosion coatings, epoxy mortars, floor coatings, floorings and top coats.

What are the main established application sectors?
Civil engineering and industrial maintenance.

Is ARADUR 46-1 nonylphenol-free?
Yes. Current product labeling identifies the grade as nonylphenol-free.

Is ARADUR 46-1 SVHC-chemicals-free?
Current product labeling identifies the grade as Substances of Very High Concern chemicals-free; formal regulatory use should rely on current documentation.

Is ARADUR 46-1 benzyl-alcohol-free?
A benzyl-alcohol-free claim should not be made without current product-specific confirmation.

Is ARADUR 46-1 low viscosity?
Yes. Low viscosity is one of its principal current product features.

Does ARADUR 46-1 have self-leveling properties?
Yes. Self-levelling is included among the current product features.

Does ARADUR 46-1 provide good wetting?
Yes. Good wetting properties are a current product feature.

Does ARADUR 46-1 provide chemical resistance?
Yes. Chemical resistance is a current product feature, although the exact resistance profile belongs to the complete cured formulation.

Can ARADUR 46-1 be used for anti-corrosion coatings?
Yes. Anti-corrosion coating is a primary current end use.

Can ARADUR 46-1 be used for epoxy mortars?
Yes. Epoxy mortars are a primary current application.

Can ARADUR 46-1 be used for flooring?
Yes. Floor coatings and floorings are primary current end uses.

Can ARADUR 46-1 be used in top coats?
Yes. Top coat is included in current product positioning.

Can ARADUR 46-1 be used on concrete?
Yes. Properly formulated systems can be used on prepared concrete and other mineral substrates.

Can ARADUR 46-1 be used on steel?
Yes. Compatible anti-corrosion systems can be used on properly prepared steel.

What is the theoretical hardener level with a resin EEW of 190?
Approximately 50 parts ARADUR 46-1 per 100 parts resin based on AHEW 95 g/eq.

Is 50 phr universal?
No. The correct ratio depends on the actual epoxy equivalent weight and formulation.

Does ARADUR 46-1 have one CAS number?
No. The complete commercial formulation should not be assigned one universal CAS number without the current SDS.

What is the density?
Use the current product-specific TDS or SDS; no sufficiently reliable current public value was verified for this profile.

What is the flash point?
Use the current product-specific SDS; no sufficiently reliable current public value was verified for this profile.

How should ARADUR 46-1 be stored?
Store dry in the sealed original container at approximately 2-40°C and protect from direct sunlight.

What documents should be checked before use?
Use the current product TDS, SDS and batch-specific quality documentation where available.

FINAL TECHNICAL SUMMARY

ARADUR 46-1 is a low-viscosity polyamine-adduct epoxy curing agent developed for ambient-cure anti-corrosion coatings, epoxy mortars, floor coatings, floorings and protective top coats.
Published product data give approximately 130-230 mPa·s viscosity at 25°C, 310-340 mg KOH/g amine value, approximately 95 g/eq active-hydrogen equivalent weight, approximately 38 minutes reference gel time and Gardner color ≤3.

Current product features include chemical resistance, enhanced surface smoothness, good color stability, good wetting properties, high smoothness, improved curing, low viscosity and self-levelling.
Current labeling claims include nonylphenol-free and Substances of Very High Concern chemicals-free.
Civil engineering and industrial maintenance are the principal established application sectors in selector literature.
Low viscosity is especially valuable in flooring and mortar technology because the binder can wet concrete, pigments, fillers and aggregate efficiently.
The self-levelling profile supports smooth industrial flooring and protective coating surfaces when rheology and batch size are optimized.
The approximately 95 g/eq AHEW gives a theoretical hardener demand near 50 parts per 100 parts resin when the epoxy resin EEW is approximately 190 g/eq.
That calculation is not universal. Exact mix ratio should be based on the actual resin EEW and current product-specific formulation guidance.
The approximately 38-minute reference gel time indicates relatively fast ambient cure with a practical but limited working window.

Large batches and warm conditions can shorten pot life because epoxy-amine cure is exothermic.
Anti-corrosion performance depends on the complete system, including steel preparation, pigment package, dry-film thickness and cure.
Epoxy mortar and flooring performance also depends on aggregate grading, substrate preparation, filler level and correct stoichiometry.
Good color stability and low Gardner color can support pale or decorative industrial flooring, but conventional epoxy still requires weathering protection for demanding exterior appearance.

A benzyl-alcohol-free claim should not be made for ARADUR 46-1 without current product-specific confirmation.
Density and flash point should likewise be taken from the current product-specific TDS or SDS rather than inferred from related grades.
ARADUR 46-1 is a proprietary commercial formulation and should not be assigned an invented single molecular formula, molecular weight, CAS number or EC number.
Storage guidance is dry storage in the sealed original container at approximately 2-40°C and away from direct sunlight.

For ARADUR 46-1 technical specifications, application guidance, TDS, SDS, COA and formulation information, contact Ataman Chemicals with the intended epoxy resin, substrate, application method, temperature and required protective or flooring performance.

Ataman Chemicals
Phone: +90 216 577 10 10
Email: info@atamankimya.com