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ARALDITE PY 720 is designed for high-performance composite and structural applications, offering balanced viscosity and excellent mechanical properties after curing.
ARALDITE PY 720 is a liquid epoxy resin based on bisphenol-A chemistry, developed for industrial adhesive, coating, casting, and composite applications.
ARALDITE PY 720 is widely used in structural adhesive formulations, corrosion-protective coatings, industrial flooring systems, casting compounds, electrical encapsulation materials, and composite manufacturing.
CAS Number: 25068-38-6
EC Number: 500-033-5
Synonyms: Aromatic epoxy resin (BPA type), Epoxy prepolymer (bisphenol A based), Industrial BPA epoxy, Thermosetting epoxy resin, Poly(bisphenol A-co-epichlorohydrin), Bisphenol A epoxy resin, DGEBA resin, Diglycidyl ether of bisphenol A, Epichlorohydrin–bisphenol A resin, Liquid BPA epoxy resin
ARALDITE PY 720 is a high-performance liquid epoxy resin formulated on a bisphenol-A diglycidyl ether backbone and developed for demanding industrial epoxy systems.
ARALDITE PY 720 is characterized by its controlled epoxy equivalent weight, stable viscosity profile, and consistent reactivity with a wide range of curing agents.
ARALDITE PY 720 contains two reactive epoxide groups per molecule, allowing efficient crosslinking with amine, anhydride, or polyamide hardeners to form a dense and mechanically robust thermoset polymer network.
After curing, ARALDITE PY 720 exhibits excellent adhesion to metallic substrates, concrete surfaces, wood materials, and fiber-reinforced composites.
The crosslinked structure produced by ARALDITE PY 720 provides high tensile strength, compressive strength, and dimensional stability under mechanical load.
ARALDITE PY 720 also demonstrates good resistance to water, dilute acids, alkalis, fuels, and various industrial chemicals, making it suitable for protective coatings and heavy-duty flooring systems exposed to aggressive service conditions.
ARALDITE PY 720 is widely used in structural adhesive formulations, corrosion-protective coatings, industrial flooring systems, casting compounds, electrical encapsulation materials, and composite manufacturing.
ARALDITE PY 720 offers formulation flexibility and can be processed under ambient or elevated curing temperatures depending on performance requirements, ensuring reliable and durable results across multiple industrial applications.
ARALDITE PY 720 is bisphenol-A/F based liquid epoxy resin.
ARALDITE PY 720 exhibits crystallization resistance and medium viscosity.
ARALDITE PY 720 offers mechanical properties and chemical resistance.
ARALDITE PY 720 is a medium-viscosity, unmodified, crystallization-resistant epoxy resin based on bisphenol-A/F.
ARALDITE PY 720 is a modified bisphenol-A based liquid epoxy resin.
ARALDITE PY 720 is designed for high-performance composite and structural applications, offering balanced viscosity and excellent mechanical properties after curing.
ARALDITE PY 720 reacts with suitable amine or anhydride hardeners to form a crosslinked thermoset polymer network with strong adhesion, good chemical resistance, and dimensional stability.
ARALDITE PY 720 is widely used in aerospace, automotive, marine, wind energy, and industrial sectors for applications such as resin transfer molding (RTM), filament winding, tooling systems, structural adhesives, and protective coatings.
ARALDITE PY 720 is a liquid epoxy resin based on bisphenol-A chemistry, developed for industrial adhesive, coating, casting, and composite applications.
ARALDITE PY 720 contains reactive epoxide groups that enable efficient curing with amine, anhydride, or polyamide hardeners.
ARALDITE PY 720 forms a rigid and chemically resistant thermoset polymer network after crosslinking and is used in systems requiring mechanical strength, adhesion, and durability.
Uses of ARALDITE PY 720:
ARALDITE PY 720 is used in structural adhesive systems, protective coatings, industrial flooring, casting applications, electrical encapsulation, and composite manufacturing.
ARALDITE PY 720 serves as a base resin in high-strength bonding formulations for metals, concrete, wood, and composite substrates.
ARALDITE PY 720 is applied in corrosion-resistant coatings for steel structures, tanks, and pipelines, and is incorporated into heavy-duty epoxy floor systems exposed to mechanical and chemical stress.
ARALDITE PY 720 is also utilized in casting and tooling compounds, potting and insulation systems for electrical components, and fiber-reinforced composite materials where mechanical durability, chemical resistance, and long-term performance are required.
Advantages of ARALDITE PY 720:
High mechanical strength:
ARALDITE PY 720 provides excellent tensile, compressive, and flexural strength after curing.
Strong adhesion:
ARALDITE PY 720 ensures reliable bonding to metals, concrete, wood, and composite substrates.
Chemical resistance:
ARALDITE PY 720 offers good resistance to water, dilute acids, alkalis, fuels, and industrial chemicals.
Corrosion protection:
ARALDITE PY 720 enhances long-term protection of steel and metal surfaces in aggressive environments.
Dimensional stability:
ARALDITE PY 720 maintains structural integrity under mechanical and thermal stress.
Versatile curing compatibility:
ARALDITE PY 720 can be formulated with amine, anhydride, or polyamide hardeners.
Processing flexibility:
ARALDITE PY 720 supports both ambient and elevated temperature curing systems.
Long service life:
ARALDITE PY 720 forms a durable thermoset network suitable for demanding industrial applications.
Properties of ARALDITE PY 720:
Compared with ARALDITE GY 250, ARALDITE PY 720 has much less tendency to crystallize.
The viscosity of ARALDITE PY 720 is also considerably lower.
ARALDITE PY 720's mechanical properties and resistance to chemicals, particularly polar solvents, can be varied widely according to the hardener and additives chosen.
Stability and Reactivity of ARALDITE PY 720:
Chemical stability:
ARALDITE PY 720 is stable under recommended storage conditions when kept in tightly closed containers.
Reactivity:
ARALDITE PY 720 reacts exothermically with amine curing agents.
Anhydride curing agents.
Polyamide curing agents to form a crosslinked thermoset network.
Conditions to avoid:
ARALDITE PY 720 should be kept away from excessive heat.
Ignition sources.
Uncontrolled mixing with hardeners.
Incompatible materials:
ARALDITE PY 720 is incompatible with strong acids.
Strong bases.
Strong oxidizing agents.
Hazardous decomposition products:
ARALDITE PY 720 may release carbon oxides (CO, CO₂).
Irritating organic fumes under fire or severe thermal decomposition.
Handling and Storage of ARALDITE PY 720:
Handling:
ARALDITE PY 720 should be handled using appropriate industrial hygiene practices.
Avoid skin and eye contact.
Ensure adequate ventilation.
Storage:
ARALDITE PY 720 should be stored in original, tightly sealed containers in a cool, dry, and well-ventilated area.
Temperature control:
ARALDITE PY 720 should be protected from direct sunlight.
Excessive heat should be avoided.
Contamination prevention:
ARALDITE PY 720 should be protected from moisture and contamination to maintain product quality.
First Aid Measures of ARALDITE PY 720:
Inhalation:
If vapors or mists of ARALDITE PY 720 are inhaled, move the person to fresh air.
Seek medical attention if symptoms persist.
Skin contact:
Wash affected skin immediately with soap and water.
Eye contact:
Rinse cautiously with water for several minutes.
Obtain medical advice if irritation continues.
Ingestion:
Rinse mouth.
Seek medical attention without inducing vomiting unless directed by medical personnel.
Firefighting Measures of ARALDITE PY 720:
Suitable extinguishing media:
Foam.
Dry chemical powder.
Carbon dioxide.
Water spray.
Protective equipment:
Firefighters should wear self-contained breathing apparatus.
Full protective clothing.
Combustion hazards:
Burning ARALDITE PY 720 may produce dense smoke.
Carbon monoxide.
Carbon dioxide.
Other irritating gases.
Accidental Release Measures of ARALDITE PY 720:
Personal precautions:
Wear appropriate protective equipment.
Avoid direct contact with spilled ARALDITE PY 720.
Environmental precautions:
Prevent ARALDITE PY 720 from entering drains, soil, or water systems.
Cleanup method:
Absorb spilled material with inert absorbents such as sand or earth.
Place in suitable containers for disposal.
Exposure Controls / Personal Protection of ARALDITE PY 720:
Respiratory protection:
Use appropriate respiratory protection if ventilation is insufficient.
Hand protection:
Wear chemical-resistant gloves.
Eye protection:
Use safety goggles or face shield.
Skin protection:
Wear protective clothing to minimize exposure.
Hygiene measures:
Wash hands thoroughly after handling.
Wash hands before eating, drinking, or smoking.
Identifiers of ARALDITE PY 720:
Epoxy functionality: Difunctional epoxide
Physical form: Viscous liquid
CAS Number: 25068-38-6
EC Number: 500-033-5
Molecular Formula: Polymeric substance
Physical State: Liquid
Appearance: Clear to slightly yellow 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 720:
Appearance: Clear to slightly yellow liquid
Viscosity: Medium to high viscosity at room temperature
Density: Approx. 1.1–1.2 g/cm³
Physical state: Liquid epoxy resin
Appearance: Clear to slightly yellow
Odor: Mild characteristic odor
Viscosity (25 °C): Medium viscosity
Epoxy equivalent weight (EEW): Approx. 180–195 g/eq
Density (25 °C): Approx. 1.15–1.20 g/cm³
Solubility: Insoluble in water
Flash point: >150 °C
Appearance: Clear liquid
Color: Colorless
Material Compatibility: Screeds
Odor: none
Value: Units: Test Method / Conditions
Epoxy Equivalent Weight: 183.0: g/eq
Density: 1.17: g/cm³ at 20°C
Flash Point: 180.0°C
Flash Point: 180.0°C
Viscosity: 7000.0-9400.0 mPa.s at 25°C
Viscosity: 7000.0-9400.0 mPa.s
