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ARALDITE PY 302-2 is a liquid epoxy resin based on bisphenol-A chemistry, designed for use in high-performance adhesive, coating, casting, and composite formulations.
ARALDITE PY 302-2 is a highly crystallization resistant, low viscosity liquid epoxy resin with superior chemical resistance.
ARALDITE PY 302-2 is widely used in industrial applications requiring mechanical strength, electrical insulation, and chemical durability.
CAS Number: 25068-38-6
EC Number: 500-033-5
Molecular Formula: (C21H24O4)n
Synonyms: Epichlorohydrin–bisphenol A resin, Diglycidyl ether of bisphenol A, Poly(bisphenol A-co-epichlorohydrin), BPA-based epoxy resin, Standard liquid epoxy resin, Difunctional epoxy resin, Industrial laminating epoxy resin, Casting grade epoxy resin, Bisphenol A diglycidyl ether, DGEBA resin, Bisphenol A epoxy resin, Liquid epoxy resin (BPA type)
ARALDITE PY 302-2 is a high-quality liquid epoxy resin based on bisphenol-A diglycidyl ether chemistry, developed for demanding industrial applications.
ARALDITE PY 302-2 is formulated to provide balanced viscosity, excellent reactivity, and reliable processing behavior in a wide range of epoxy systems.
ARALDITE PY 302-2 contains two reactive epoxide groups per molecule, enabling efficient crosslinking when combined with suitable curing agents such as amines, anhydrides, or polyamides.
During the curing process, ARALDITE PY 302-2 forms a rigid three-dimensional thermoset network that delivers high mechanical strength, strong adhesion to various substrates, and long-term dimensional stability.
ARALDITE PY 302-2 demonstrates very good chemical resistance against water, dilute acids, alkalis, and many solvents, making it suitable for protective coatings and industrial flooring systems.
ARALDITE PY 302-2 also exhibits reliable electrical insulation properties, which makes it appropriate for encapsulation and potting applications in electrical and electronic components.
ARALDITE PY 302-2 is widely used in structural adhesives, composite manufacturing, casting systems, civil engineering repair materials, and corrosion-resistant coatings.
ARALDITE PY 302-2 offers consistent performance in both ambient and elevated temperature curing systems and serves as a versatile base resin for high-performance epoxy formulations across multiple industrial sectors.
ARALDITE PY 302-2 is a non-crystallizing bisphenol-A/F-based liquid epoxy resin blend.
ARALDITE PY 302-2 is used in ambient-cure coating and construction applications.
ARALDITE PY 302-2 is an epoxy resin based on bisphenol A and bisphenol F.
ARALDITE PY 302-2 is a highly crystallization resistant, low viscosity liquid epoxy resin with superior chemical resistance.
Due to ARALDITE PY 302-2's low viscosity and higher functionality, this resin is suitable for high solids and solvent-free high performance coatings.
ARALDITE PY 302-2 is a non-crystallizing, unmodified epoxy resin based on bisphenol-A/F.
ARALDITE PY 302-2 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.
ARALDITE PY 302-2 is also used in potting & encapsulating, thermally & electrically conductive, household appliance assembly, sporting goods, aircraft and aerospace, marine, rail, recreational vehicle, truck, sport & leisure and wind industry.
ARALDITE PY 302-2 is a liquid epoxy resin based on bisphenol-A chemistry, designed for use in high-performance adhesive, coating, casting, and composite formulations.
ARALDITE PY 302-2 contains reactive epoxide groups that enable curing with amine, anhydride, or other hardener systems to form strong, chemically resistant thermoset polymers.
ARALDITE PY 302-2 is widely used in industrial applications requiring mechanical strength, electrical insulation, and chemical durability.
Uses of ARALDITE PY 302-2:
ARALDITE PY 302-2 is widely used in structural adhesive systems, protective coatings, industrial flooring, casting applications, electrical encapsulation, and composite manufacturing.
ARALDITE PY 302-2 serves as a base resin in high-strength bonding formulations for metal, concrete, wood, and composite substrates.
ARALDITE PY 302-2 is applied in corrosion-resistant coatings for steel structures, tanks, and pipelines, as well as in heavy-duty, chemical-resistant industrial flooring systems.
ARALDITE PY 302-2 is also utilized in casting and tooling compounds, electrical potting and encapsulation systems, and fiber-reinforced composite materials where mechanical strength, chemical resistance, and long-term durability are required.
Features of ARALDITE PY 302-2:
High reactivity:
ARALDITE PY 302-2 contains reactive epoxide groups that enable efficient curing with a wide range of hardeners.
Balanced viscosity:
ARALDITE PY 302-2 provides suitable flow and processing characteristics for coating, casting, and adhesive applications.
Strong adhesion:
ARALDITE PY 302-2 delivers excellent bonding strength to metals, concrete, wood, and composite materials.
Mechanical performance:
ARALDITE PY 302-2 develops high tensile strength, compressive strength, and dimensional stability after curing.
Chemical resistance:
ARALDITE PY 302-2 offers resistance to water, dilute acids, alkalis, and various industrial chemicals.
Electrical insulation:
ARALDITE PY 302-2 provides good dielectric properties for encapsulation and potting systems.
Thermoset stability:
ARALDITE PY 302-2 forms a rigid, crosslinked polymer network with long-term durability.
Formulation versatility:
ARALDITE PY 302-2 is compatible with amine, anhydride, and polyamide curing agents for diverse industrial systems.
Properties of ARALDITE PY 302-2:
The properties of coatings based on ARALDITE PY 302-2 are comparable with those of formulations based on ARALDITE GY 250.
ARALDITE PY 302-2 is markedly of lower viscosity than ARALDITE GY 250.
ARALDITE PY 302-2 will not crystallize, not even under extreme conditions.
The mechanical properties and chemical resistance, particularly to polar solvents, of ARALDITE PY 302-2 based formulations can be extensively modified to suit requirements by selecting suitable hardeners and ancillary materials.
Processing of ARALDITE PY 302-2:
ARALDITE PY 302-2 is processed by carefully mixing the resin with a suitable curing agent in the recommended stoichiometric ratio to ensure complete crosslinking and optimal performance.
ARALDITE PY 302-2 can be applied at ambient temperature or cured under elevated temperatures depending on the selected hardener system and desired mechanical properties.
The viscosity of ARALDITE PY 302-2 may be adjusted using reactive diluents or fillers to meet specific application requirements such as coating, casting, or adhesive bonding.
After mixing, ARALDITE PY 302-2 has a defined pot life that varies with formulation and temperature, and the material can be applied by brushing, rolling, pouring, injection, or impregnation before full curing takes place.
Stability and Reactivity of ARALDITE PY 302-2:
Chemical stability:
ARALDITE PY 302-2 is stable under normal storage and handling conditions when kept in sealed containers.
Reactivity:
ARALDITE PY 302-2 reacts with amines.
Anhydrides.
Other curing agents in an exothermic crosslinking reaction.
Conditions to avoid:
ARALDITE PY 302-2 should be kept away from excessive heat.
Open flames.
Strong oxidizers.
Uncontrolled mixing with curing agents.
Incompatible materials:
ARALDITE PY 302-2 is incompatible with strong acids.
Strong bases.
Strong oxidizing agents.
Hazardous decomposition products:
ARALDITE PY 302-2 may generate carbon oxides (CO, CO₂).
Irritating organic vapors under fire conditions.
Handling and Storage of ARALDITE PY 302-2:
Handling:
ARALDITE PY 302-2 should be handled using good industrial hygiene practices.
Direct skin and eye contact should be avoided.
Adequate ventilation should be ensured.
Storage:
ARALDITE PY 302-2 should be stored in tightly closed original containers in a cool, dry, and well-ventilated area.
Temperature conditions:
ARALDITE PY 302-2 should be protected from direct sunlight.
Excessive heat should be avoided.
Moisture control:
ARALDITE PY 302-2 should be protected from water contamination to maintain product quality.
First Aid Measures of ARALDITE PY 302-2:
Inhalation:
If vapors or mists of ARALDITE PY 302-2 are inhaled, the affected person should be moved to fresh air.
Medical attention should be sought if symptoms persist.
Skin contact:
Skin exposed to ARALDITE PY 302-2 should be washed immediately with soap and water.
Eye contact:
Eyes exposed to ARALDITE PY 302-2 should be rinsed cautiously with water for several minutes.
Medical advice should be obtained if irritation continues.
Ingestion:
If ARALDITE PY 302-2 is swallowed, the mouth should be rinsed with water.
Medical attention should be sought.
Firefighting Measures of ARALDITE PY 302-2:
Suitable extinguishing media:
Fires involving ARALDITE PY 302-2 can be extinguished using foam.
Dry chemical powder.
Carbon dioxide.
Water spray.
Protective equipment:
Firefighters should wear self-contained breathing apparatus.
Protective clothing.
Combustion hazards:
Burning ARALDITE PY 302-2 may produce dense smoke.
Carbon oxides.
Irritating fumes.
Accidental Release Measures of ARALDITE PY 302-2:
Personal precautions:
Personnel should wear appropriate protective equipment.
Direct contact with spilled ARALDITE PY 302-2 should be avoided.
Environmental precautions:
ARALDITE PY 302-2 should be prevented from entering drains, soil, or water systems.
Cleanup method:
Spilled ARALDITE PY 302-2 should be absorbed with inert material such as sand or vermiculite.
ARALDITE PY 302-2 should be transferred to suitable containers for disposal.
Exposure Controls / Personal Protection of ARALDITE PY 302-2:
Respiratory protection:
Appropriate respiratory protection should be used if ventilation is insufficient or exposure limits are exceeded.
Hand protection:
Chemical-resistant gloves should be worn when handling ARALDITE PY 302-2.
Eye protection:
Safety goggles or face shields should be used to prevent eye contact.
Skin protection:
Protective clothing should be worn to minimize skin exposure.
Hygiene measures:
Hands should be washed thoroughly after handling ARALDITE PY 302-2.
Hands should be washed before eating, drinking, or smoking.
Identifiers of ARALDITE PY 302-2:
Chemical family: Diglycidyl ether of bisphenol-A
Epoxy functionality: Difunctional epoxide resin
Physical form: Clear to slightly yellow viscous liquid
CAS Number: 25068-38-6
EC Number: 500-033-5
Molecular Formula: (C21H24O4)n
Molecular Weight: Polymeric
Chemical Family: Epoxy resin
Product Type: Low-viscosity liquid epoxy resin
Blend: No
Chemical Family: Epoxy & Epoxy Derivatives
Function: Binder & Resin,Binder & Resin
Product Functions: Binder
Single Ingredient: Yes
Technologies: CASE
Properties of ARALDITE PY 302-2:
Physical State: Liquid
Color: Clear to pale yellow
Odor: Mild characteristic epoxy odor
Viscosity: Low to medium at 25 °C
Density: Approximately 1.14–1.18 g/cm³ at 25 °C
Epoxy Equivalent Weight (EEW): Typically around 182–192 g/eq
Solubility: Insoluble in water; soluble in many organic solvents
Flash Point: Typically above 150 °C
Density: 1.17: g/cm³ at 25°C
Flash Point: min. 93.0°C
Viscosity: 6500.0-8000.0 mPa.s
Visual Appearance: Clear, no contamination
Color, Gardner, max: 3
Viscosity @ 25°C, cP: 6500 - 8000
Epoxy value, eq./kg: 5.65 - 5.88
Epoxy equivalent, g/eq.: 170 - 177
Density @ 25°C, g/cm3: 1.17
Flash Point, closed cup, °C (°F): >93 (>200)
