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Aradur 350 is also used for formulation as a reaction adhesive on steel or mineral substrates.
Aradur 350 is used for formulation as a reaction adhesive on steel or mineral substrates.
Aradur 350 is used in solvent-containing coatings.
CAS Number: Mixture – no single CAS number assigned
EC Number: Mixture – no single EC number assigned
Molecular Formula: Not applicable (commercial mixture)
Molecular Weight: Not applicable (commercial mixture)
SYNONYMS:
ARADUR® 350, Aradur 350 Hardener, Polyaminoimidazoline Epoxy Hardener, Polyaminoimidazoline Curing Agent, Epoxy Resin Hardener, Epoxy Curing Agent, Amine-Based Epoxy Hardener, Low-Viscosity Polyaminoimidazoline Hardener
Aradur 350 is a low-viscosity, Benzyl Alcohol-free, polyaminoimidazoline-based epoxy curing agent.
Aradur 350 is a BzOH-free, low-viscosity polyaminoimidazoline-based curing agent.
Aradur 350 permits the longest working times.
Aradur 350 in formulations with a high binder content a degree of residual tackiness may remain, and smearing may occur, particularly at low working temperatures.
Under these conditions the proportional use of rapid hardeners such as Aradur 10, 14 and 16 is recommended.
Compared with Aradur 250, Aradur 350 features a distinctly lower degree of viscosity and is accordingly easier to work.
In addition, Aradur 350 permits the longest working times in the range of Aradur 250, 350 and 370.
Aradur 350 is a low-viscosity polyaminoimidazoline-based epoxy curing agent developed for cold-curing, solvent-free, and high-solids epoxy systems.
Aradur 350 is specifically designed to cure liquid epoxy resins under ambient conditions while providing an excellent balance of long pot life, high mechanical strength, outstanding adhesion, and chemical resistance.
Compared with other hardeners in the Aradur polyaminoimidazoline series, Aradur 350 offers significantly lower viscosity, making it easier to process, mix, pump, and apply.
Aradur 350 is widely used in industrial coatings, structural adhesives, epoxy mortars, flooring systems, mastics, tank linings, and concrete repair materials where long working time and durable performance are required.
Aradur 350 forms highly cross-linked thermoset networks that exhibit excellent toughness, abrasion resistance, and long-term durability in demanding industrial and construction environments.
USES and APPLICATIONS of ARADUR 350:
Aradur 350 is widely used in the formulation of solvent-free and high-solids epoxy coatings for industrial and civil engineering applications.
Aradur 350 is particularly suitable for heavy-duty floor coatings, protective concrete coatings, anti-corrosion coatings, tank linings, drum linings, industrial maintenance coatings, and steel protection systems where excellent adhesion and chemical resistance are essential.
Aradur 350's low viscosity allows easy incorporation of fillers and pigments, making it ideal for epoxy mortars, self-leveling flooring compounds, repair mortars, and high-build protective coatings.
Aradur 350 is extensively used as a curing agent for structural reaction adhesives designed for bonding steel, concrete, mineral substrates, wood, ceramics, and composite materials.
In construction applications, Aradur 350 is employed in crack injection systems, concrete rehabilitation, industrial flooring, bridge maintenance, anchoring systems, and heavy-duty repair compounds requiring long working time and high final strength.
Aradur 350 is also suitable for industrial castings, mastics, grouting compounds, composite materials, and solvent-free epoxy formulations where reliable curing at ambient temperature is required.
Because of its excellent flow characteristics and long pot life, Aradur 350 is frequently selected for large-scale industrial applications that require sufficient application time before gelation.
Aradur 350 is compatible with liquid epoxy resins such as Araldite® GY 250, GY 783, and GY 784, enabling formulators to develop durable epoxy systems with excellent processing characteristics and long-term performance.
Aradur 350 is primarily used to formulate epoxy systems that require exceptionally long working times and low viscosity, and is highly favored for adhesives and coatings applications.
Civil Engineering & Construction: Aradur 350 is used for anchoring, concrete repair mortars, and industrial flooring.
Coatings & Adhesives: Aradur 350 acts as a reliable curing agent for solvent-free protective coatings and high-performance structural adhesives.
Applications of Aradur 350: Mainly with liquid epoxy resins such as Araldi te GY 250, GY 783, GY 784 for cold-curing, solvent-free mastics or epoxy resin mortars.
Aradur 350 is also used for formulation as a reaction adhesive on steel or mineral substrates.
Aradur 350 is used for formulation as a reaction adhesive on steel or mineral substrates.
Aradur 350 is also recommended for exterior vehicle (OEM), interior vehicle (OEM), vehicle assembly (OEM), structure assembly, battery cover sealing & battery assembly, cable sealing, motor & magnet bonding, potting & encapsulating, assembly, thermally & electrically conductive, household appliance assembly, sporting goods, medical device assembly, aircraft and aerospace, marine, rail, recreational vehicle, truck, wind, sport and leisure.
Aradur 350 is used in solvent-containing coatings.
BENEFITS of ARADUR 350:
Aradur 350 offers outstanding processing and performance advantages for epoxy resin systems.
Aradur 350's low viscosity significantly improves mixing efficiency, filler dispersion, substrate wetting, and application properties while reducing energy consumption during processing.
Aradur 350 provides one of the longest pot lives within the Aradur polyaminoimidazoline family, allowing manufacturers and applicators greater flexibility during installation of large flooring systems, castings, coatings, and structural adhesives.
The cured epoxy systems demonstrate excellent adhesion to metals, concrete, mineral substrates, and wood while providing outstanding chemical resistance against oils, fuels, salts, water, cleaning agents, and many industrial chemicals.
High mechanical strength, abrasion resistance, impact resistance, and dimensional stability contribute to extended service life in demanding industrial environments.
The excellent blush resistance minimizes surface defects caused by moisture during curing, reducing the need for additional surface preparation before overcoating.
In addition, Aradur 350 develops coatings with attractive high-gloss finishes and excellent long-term durability under both indoor and outdoor service conditions.
PROPERTIES of ARADUR 350:
Aradur 350 is formulated to provide exceptionally low viscosity while maintaining high curing efficiency, allowing formulators to produce epoxy systems with excellent flow characteristics and easy application.
The low viscosity improves wetting of fillers, pigments, fibers, and substrates, resulting in homogeneous formulations and enhanced bonding performance.
Compared with higher-viscosity polyaminoimidazoline hardeners, Aradur 350 offers easier mixing, reduced air entrapment, and improved penetration into porous substrates such as concrete and mineral surfaces.
The cured epoxy systems exhibit excellent adhesion to steel, concrete, wood, and mineral substrates while maintaining high mechanical strength and toughness.
Aradur 350 is particularly valued for providing the longest working time among the Aradur 250, 350, and 370 series, allowing sufficient processing time for large castings, flooring installations, structural bonding, and repair applications.
Aradur 350 also demonstrates excellent blush resistance, helping maintain surface quality during curing under humid conditions, and produces coatings with high gloss, excellent abrasion resistance, and long-term durability.
COMPONENTS of ARADUR 350:
Aradur 350 is a solvent-free polyamidoamine-based epoxy curing agent (hardener).
Aradur 350 is a proprietary polymeric formulation, not a single chemical substance.
Aradur 350 belongs to the polyamidoamine chemical family and is supplied as a 100% active (solvent-free) curing agent with no intentionally added solvent.
The formulation consists primarily of the following component:
Polyamidoamine (active epoxy curing agent) – approximately 100 wt.%
COMPONENT DETAILS of ARADUR 350:
Polyamidoamine
Function: Active epoxy curing agent (hardener)
Approximate content: ≈100 wt.%
CAS Number: Proprietary mixture (no single CAS number assigned)
EC Number: Mixture (no single EC number assigned)
Molecular Formula: Not applicable (polymeric proprietary mixture)
Molecular Weight: Not applicable (polymeric mixture)
Purpose:
Reacts with epoxy resins to produce a highly crosslinked thermoset polymer, providing excellent adhesion, fast curing, improved chemical resistance, good blush resistance, high mechanical strength, good gloss, and extended pot life.
It is widely used in solvent-free mortars, mastics, adhesives, floor coatings, and protective coatings.
CHEMICAL ORIGIN of ARADUR 350:
The active curing agent is a polyamidoamine polymer, generally produced by the polycondensation of dimerized fatty acids with selected polyamines.
This reaction forms a polymer containing terminal amine groups that react with epoxy resins during curing.
Typical Formulation (Approximate)
Polyamidoamine: ~100%
CHARACTERISTICS of ARADUR 350:
Aradur 350 is characterized by its polyaminoimidazoline chemistry, low viscosity, long working time, and balanced curing performance.
Aradur 350 reacts efficiently with liquid epoxy resins to form highly cross-linked polymer networks possessing excellent toughness, hardness, and cohesive strength.
Aradur 350 maintains stable curing behavior under ambient conditions while producing epoxy systems with excellent adhesion, chemical resistance, and mechanical integrity.
A distinguishing feature of Aradur 350 is its ability to combine extended processing time with relatively rapid development of final mechanical properties after curing.
This balance allows manufacturers to process complex components without sacrificing productivity.
Aradur 350 exhibits excellent compatibility with numerous liquid epoxy resins and fillers, making it highly versatile for industrial coatings, structural adhesives, flooring systems, castings, mortars, and maintenance products.
Aradur 350's low viscosity further improves penetration into porous mineral substrates and enhances the overall performance of structural repair systems and protective coatings.
KEY CHARACTERISTICS of ARADUR 350:
Chemistry: Polyaminoimidazoline (Amidoamine/Polyamide).
Viscosity: Noticeably lower than older standard alternatives like Aradur 250, making it much easier to mix and apply.
Working Time: Permits the longest working times in its class of hardeners.
Appearance: Clear liquid.
Density: ~0.94 kg/L.
PROPERTIES of ARADUR 350:
In combination with liquid epoxy resins and suitable fillers for tough and hard mortars or mastics.
In formulations with a high binder content a degree of residual tackiness may remain, and smearing may occur, particularly at low working temperatures.
Under these conditions we recommend the proportional use of rapid hardeners such as Aradur 10, 14 and 16.
Compared with Aradur 250, Aradur 350 features a distinctly lower degree of viscosity and is accordingly easier to work.
In addition, this hardener permits the longest working times in the range of Aradur 250, 350 and 370.
PHYSICAL and CHEMICAL PROPERTIES of ARADUR 350:
Product Name: ARADUR® 350
Chemical Description: Polyaminoimidazoline epoxy curing agent
Chemical Family: Polyaminoimidazoline
Product Type: Epoxy curing agent / Hardener / Accelerator
CAS Number: Mixture – no single CAS number assigned
EC Number: Mixture – no single EC number assigned
Molecular Formula: Not applicable (commercial mixture)
Molecular Weight: Not applicable (commercial mixture)
Appearance: Clear liquid
Physical State: Liquid
Odor: Amine odor
Color: Brown (typically ≤10 Gardner)
Chemical Nature: Polyaminoimidazoline curing agent
Density: Approximately 0.94 g/cm³ (20°C)
Viscosity: 100–400 mPa·s (25°C)
Amine Value: 370–410 mg KOH/g
Active Hydrogen Equivalent Weight (AHEW): Approximately 95 g/eq
Flash Point: ≥200°C (Pensky-Martens Closed Cup)
Boiling Point: Not established for the commercial mixture
Melting Point: Not applicable
Vapor Pressure: Low under normal conditions
Solubility: Compatible with liquid epoxy resins; limited water solubility
Reactivity: Highly reactive toward epoxy functional groups
Curing Mechanism: Amine-epoxy addition polymerization
Gel Time: Approximately 180 minutes (with Araldite® GY 250 at 23°C)
Mix Ratio: 100:50 parts by weight (Araldite® GY 250 : ARADUR® 350)
Thermal Stability: Stable under recommended storage conditions
Storage Temperature: 2–40°C
Shelf Life: Refer to manufacturer documentation; stable when stored correctly
Flammability: Combustible liquid with high flash point
Product family: Crosslinking / Curing / Vulcanizing Agents
Chemical family: Amidoamines|Amines
Product Type: Additives
Viscosity Class Liquid
Density 0.94 kg_l
Chemistry / Technology Epoxy
Brand ARADUR
Color Clear
Multi parts product type Hardener
Dynamic Viscosity (25°C) 300 mPas
FIRST AID MEASURES of ARADUR 350:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available
ACCIDENTAL RELEASE MEASURES of ARADUR 350:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.
FIRE FIGHTING MEASURES of ARADUR 350:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.
EXPOSURE CONTROLS/PERSONAL PROTECTION of ARADUR 350:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.
HANDLING and STORAGE of ARADUR 350:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.
STABILITY and REACTIVITY of ARADUR 350:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available
