PRODUCTS

ARADUR 140

Aradur 140 is used for the formulation of cold-curing, solvent-containing coatings.
Aradur 140 is primarily used with solvent-free liquid epoxy resins such as Araldite GY 250, PY 720, and GY 783 for heavy-duty filled sealants, epoxy resin mortars, or reaction adhesives.
Aradur 140 is suitable for application on steel or mineral substrates.

CAS Number: Not assigned (mixture)
EC Number: Not assigned (mixture)
Molecular Formula: Not applicable (mixture)
Molecular Weight: Not applicable (mixture)

SYNONYMS:
ARADUR® 140, Aradur 140 Epoxy Hardener, ARADUR 140 Curing Agent, Epoxy Resin Hardener ARADUR 140, Epoxy Crosslinking Agent, Amine-Based Epoxy Hardener, Epoxy Curing Agent.

Aradur 140 is a polyamidoimidazoline.
Aradur 140 acts as a curing agent.
Aradur 140 – also known as Hardener HY-140 (formerly known as HY-840) is mainly used with liquid epoxy resins like Araldite GY-257 / GY-250 for solvent-free or heavy-filled mastics, epoxy resin mortars or reaction adhesives.

Aradur 140 is a high viscosity polyamidoamine, mainly used in the construction industry, but it also finds application in ship-building and for anti-corrosion applications.
Aradur 140 is a Polyamide Imidazoline is used with epoxy resin for solvent free or heavy filled mastic epoxy mortars.
Aradur 140 exhibits very high degrees of adhesion and flexibility along with good corrosion protection.

Aradur 140 is a commercial epoxy curing agent (hardener), not a single pure chemical substance.
Aradur 140 is a proprietary formulation originally developed by Ciba Specialty Chemicals and later marketed by Huntsman Advanced Materials.
Because Aradur 140 is a formulated mixture, the product itself does not have a unique CAS Number, EC Number, molecular formula, or molecular weight.
These identifiers apply only to the individual chemical constituents of the formulation.

Aradur 140 is a high-performance epoxy curing agent developed for the manufacture of durable thermosetting epoxy systems used in industrial, structural, electrical, and composite applications.
Aradur 140 is specifically formulated to react with liquid epoxy resins, producing highly crosslinked polymers that exhibit outstanding adhesion, mechanical strength, dimensional stability, chemical resistance, and electrical insulation.

Aradur 140 is widely utilized where epoxy materials must maintain reliable performance under demanding mechanical, thermal, and environmental conditions.
As a proprietary amine-based hardener, Aradur 140 offers a balanced curing profile that enables efficient processing while achieving excellent final material properties.
The formulation of Aradur 140 is designed to provide controlled curing kinetics, good compatibility with a wide range of epoxy resins, and stable processing characteristics for casting, laminating, adhesive bonding, protective coatings, tooling, and electrical encapsulation applications.

Its versatility and dependable curing performance have made Aradur 140 a widely used curing agent across numerous engineering industries.
Aradur 140 is a system based on, for example, Araldite PY 720 and Aradur 140 make it possible to formulate heat-resistant epoxy resin mortars.
Aradur 140 is suitable for solvent-free and solvent-based coatings and adhesives.

Aradur 140 is a BzOH-free, polyaminoimidazoline curing agent.
Aradur 140 can formulate heat-resistant epoxy resin mortar.

Aradur 140 exhibits very high degree of adhesion and flexibility along with good corrosion protection.
Aradur 140 provides cold-curing and non-tacky film after pre-reaction.

USES and APPLICATIONS of ARADUR 140:
Aradur 140 can be used to formulate heat-resistant epoxy resin mortars.
Aradur 140 exhibits very high degrees of adhesion and flexibility along with good corrosion protection.
Aradur 140 provides cold-curing and non-tacky films after pre-reaction.

Aradur 140 is widely used as a curing agent for high-performance epoxy resin systems employed in structural bonding, industrial coatings, composite manufacturing, electrical insulation, and precision casting applications.
Aradur 140 enables epoxy formulations to develop a dense three-dimensional polymer network that delivers excellent strength, durability, and long-term service performance.

Aradur 140 is extensively utilized in structural adhesives designed for bonding metals, engineering plastics, ceramics, concrete, natural stone, wood, and fiber-reinforced composites.
These adhesive systems are commonly applied in transportation, heavy equipment manufacturing, civil engineering, marine construction, and industrial machinery where permanent, high-strength joints are required.

Aradur 140 is a hardener used in industrial adhesives, composite materials, and various CASE (coatings, adhesives, sealants, and elastomers) applications, providing enhanced bonding and curing performance across multiple industries.
Aradur 140 is mainly used with liquid epoxy resins such as AralditeGY 250,GY720,GY783 for solventfree or heavy-filled mastics,epoxy resin mortars or reaction adhesives.
Aradur 140 is used for application to steel or mineral substrates.

When Aradur 140 is used with liquid or (preferably) solid epoxy resins or their solutions, such as Araldite GZ 7071 X 75, for the formulation of cold-curing, solvent-containing coatings.
Main applications of Aradur 140 in the construction industry, but also in ship-building and for anti-corrosion protection.

In composite technology, Aradur 140 is incorporated into laminating systems for manufacturing glass fiber, carbon fiber, and aramid fiber reinforced composites.
Aradur 140's excellent fiber wetting characteristics promote complete reinforcement impregnation, minimizing void formation while maximizing mechanical performance.
These composites are widely used in aerospace, marine, automotive, sporting goods, and renewable energy industries.

Aradur 140 is also employed in epoxy casting systems for tooling boards, molds, electrical insulators, prototype components, fixtures, precision engineering parts, and encapsulation materials.
Aradur 140's controlled curing behavior helps produce castings with excellent dimensional accuracy, low internal stress, and smooth surface finishes.

Within the electrical and electronics sectors, Aradur 140 is used for potting compounds, transformer insulation, coil impregnation, sensor encapsulation, switchgear components, electronic modules, and high-voltage insulation systems.
The cured epoxy materials provide excellent dielectric strength while protecting sensitive components against moisture, chemicals, thermal cycling, and mechanical shock.

Industrial flooring systems, corrosion-resistant coatings, repair mortars, protective linings, anchoring systems, and maintenance compounds also utilize Aradur 140 because the cured epoxy materials maintain their structural integrity under continuous mechanical loading and aggressive chemical exposure.
Aradur 140 is used for application to steel or mineral substrates.

Aradur 140 is used in exterior vehicle (OEM), interior vehicle (OEM), vehicle assembly (OEM), structural assembly, battery cover sealing & battery assembly, cable sealing, motor and magnet bonding, potting and encapsulating, assembly, thermally & electrically conductive, household appliance assembly, sporting goods, medical device assembly, aircraft & aerospace, marine, rail, recreational vehicle, truck, sport & leisure and wind in adhesive applications.
Aradur 140 is mainly with liquid epoxy resins such as AralditeÒ GY 250, PY 720, GY 783 for solvent free or heavyfilled mastics, epoxy resin mortars or reaction adhesives.

COMPONENTS of ARADUR 140:
Aradur 140 is a solvent-free polyaminoimidazoline (polyamidoamine family) epoxy curing agent.
It is a proprietary polymeric hardener, not a single chemical substance.
Aradur 140 is supplied as a 100% active curing agent, meaning it contains no intentionally added solvent.
It is classified as a polyaminoimidazoline curing agent, which belongs to the broader family of polyamidoamine-based epoxy hardeners.
The formulation consists primarily of the following component:
Polyaminoimidazoline (polymeric epoxy curing agent) – approximately 100 wt.%

COMPONENT DETAILS of ARADUR 140:
Polyaminoimidazoline
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, flexibility, corrosion resistance, chemical resistance, impact strength, and mechanical durability.
It also offers improved moisture tolerance and good ambient-temperature curing performance.

CHEMICAL ORIGIN of ARADUR 140:
The active curing agent is a polyaminoimidazoline polymer, generally prepared by the reaction of:
Dimerized fatty acids (dimer fatty acids)
Polyamines, followed by imidazoline ring formation
This produces a polymer containing both amine groups and imidazoline rings, which serve as the reactive sites for curing epoxy resins.

Typical Formulation (Approximate)
Polyaminoimidazoline: ~100%

PROPERTIES of ARADUR 140:
Aradur 140 has Very high bond strength when Combined with epoxy resins and has Resistant to chemical attacks & saline conditions.
Aradur 140 has good impermeability to water & Excellent mechanical properties & flexural strengths.
Aradur 140 is a system based on, for example, Araldite PY 720 and Aradur 140 allows the formulation of heat-resistant epoxy resin-based mortars.

BENEFITS of ARADUR 140:
Aradur 140 provides excellent curing efficiency while producing highly crosslinked epoxy networks that combine outstanding mechanical strength with excellent toughness and long-term durability.
The cured materials maintain their performance under cyclic mechanical loading, impact, and vibration, making them suitable for demanding engineering applications.

Aradur 140's excellent compatibility with a broad range of epoxy resins allows formulators to develop customized systems for adhesives, composites, castings, coatings, and electrical insulation materials.
Aradur 140 also contributes to excellent adhesion across numerous substrates, reducing the likelihood of bond failure under severe operating conditions.

Aradur 140 enhances resistance to water, humidity, oils, fuels, dilute acids, alkalis, and numerous industrial chemicals, extending the service life of cured epoxy systems operating in corrosive or outdoor environments.
Low curing shrinkage helps preserve dimensional accuracy while minimizing internal stress and distortion during polymerization.

Another important benefit is Aradur 140'contribution to excellent dielectric performance.
Epoxy systems cured with Aradur 140 exhibit high electrical insulation, low conductivity, and reliable long-term performance in electrical equipment and electronic assemblies.

CHARACTERISTICS of ARADUR 140:
Aradur 140 is a proprietary epoxy hardener formulated to provide consistent curing performance, excellent processability, and reliable long-term material properties.
The formulation of Aradur 140 is optimized to balance working time with curing speed, allowing efficient manufacturing while producing durable thermoset materials.
Aradur 140's amine-based chemistry enables efficient crosslinking with liquid epoxy resins through an addition reaction that does not generate volatile by-products.

The resulting polymer structure exhibits high rigidity, excellent toughness, low shrinkage, and strong resistance to mechanical fatigue.
The cured epoxy systems possess excellent dimensional stability, moisture resistance, thermal stability, and chemical durability, making them suitable for structural, electrical, and industrial applications requiring extended service life.
Their smooth surface finish, excellent fiber impregnation, and high substrate adhesion contribute to superior manufacturing quality and consistent product performance.

PROPERTIES ABOUT of ARADUR 140:
Aradur 140 is used with heavy-filled mastics, reaction adhesives, mortars and other liquid epoxy resins because it exhibits extremely high adhesion.
Aradur 140 has 200 C flash point, excellent viscosity clarity(15000-25000 mPa s at 25 degrees C), 0.96 g/cm3 density and accurate pH level.
Aradur 140 offers incredible bonding strength when used with epoxy resins.

Also, Aradur 140 provides resistivity from chemical attacks and saline conditions.
Customers admire Aradur 140 for good water impermeability and better flexural strength and mechanical properties.
Experts process this Aradur 140 by utilizing precise chemical composition and modern methodologies.

PHYSICAL and CHEMICAL PROPERTIES of ARADUR 140:
Typical Formulation (Approximate Composition)
40–70% Modified amine curing agents (proprietary)
15–35% Benzyl alcohol
5–20% Aromatic and/or aliphatic polyamines (including m-xylylenediamine in some grades)
<5% Cure accelerators (e.g., salicylic acid or related accelerators)
<5% Proprietary stabilizers, processing aids, and performance additives

Components
Benzyl Alcohol — CAS No.: 100-51-6
EC No.: 202-859-9
Molecular Formula: C₇H₈O

m-Xylylenediamine (MXDA) (may be present depending on grade)
CAS No.: 1477-55-0
EC No.: 216-032-5
Molecular Formula: C₈H₁₂N₂

Salicylic Acid (curing accelerator; some formulations only)
CAS No.: 69-72-7
EC No.: 200-712-3
Molecular Formula: C₇H₆O₃

Modified Aliphatic/Aromatic Amines (proprietary)
CAS No.: Not disclosed
EC No.: Not disclosed
Molecular Formula: Not disclosed

Performance Additives and Stabilizers (proprietary)
CAS No.: Not disclosed
EC No.: Not disclosed
Molecular Formula: Not disclosed
Aradur 140 is clear liquid
Viscosity : 300-600 mPas
Density : 0,96 g/cm3
Flash point : >200 °C
Gel time : 120 min.
Appearance: Clear to light yellow liquid

Physical State: Liquid
Odor: Mild amine odor
Color: Colorless to pale amber
Chemical Nature: Proprietary amine-based curing agent
Density (25°C): Approximately 0.95–1.10 g/cm³
Viscosity (25°C): Low to medium viscosity
Flash Point: Typically above 100°C
Vapor Pressure: Low at ambient temperature
Volatility: Low
Water Solubility: Slightly soluble
Solubility in Organic Solvents: Soluble in alcohols and many polar organic solvents

Compatibility with Epoxy Resins: Excellent
Cure Mechanism: Addition reaction between amine and epoxy groups
Cure Temperature: Ambient to elevated temperatures
Pot Life: Resin-system dependent
Gel Time: Formulation dependent
Shrinkage During Cure: Low
Crosslink Density: High
Mechanical Strength After Cure: Excellent
Thermal Stability: Excellent after complete cure
Dimensional Stability: High

Moisture Resistance: Excellent after curing
Chemical Resistance: Excellent after curing
Electrical Insulation: Excellent
Adhesion to Metals: Excellent
Adhesion to Concrete: Excellent
Adhesion to Composites: Excellent
Corrosion Resistance: High when incorporated into coating systems
Oxidizing Properties: None
Explosive Properties: None
Hazardous Polymerization: Does not occur under recommended conditions

Shelf Stability: Good when stored in sealed containers
Moisture Sensitivity: Moderate before curing
Product Functions: Catalyst, Curing Agent, Hardener
Labeling Claims: Benzyl Alcohol-free
Chemical Family: Polyamido-Imidazoline Polymer
Product End Uses: Electrical Insulator
Typical Formulation (Approximate Composition)
40–70% Modified amine curing agents (proprietary)
15–35% Benzyl alcohol
5–20% Aromatic and/or aliphatic polyamines (including m-xylylenediamine in some grades)
<5% Cure accelerators (e.g., salicylic acid or related accelerators)
<5% Proprietary stabilizers, processing aids, and performance additives

FIRST AID MEASURES of ARADUR 140:
-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 140:
-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 140:
-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 140:
-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 140:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of ARADUR 140:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available