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HHPA
SINOBIO
29172090
Hexahydrophthalic Anhydride (HHPA, CAS 85-42-7) is a high-performance saturated cyclic anhydride, specially designed as a premium curing agent for epoxy resins and a key intermediate for high-grade polymer synthesis. With a standard purity of ≥99%, it presents as white crystalline powder at room temperature and easily melts into a clear liquid at around 35ºC, distinguishing itself from unsaturated anhydrides (e.g., THPA) by its stable saturated molecular structure.
As a professional epoxy curing agent, HHPA endows cured epoxy systems with outstanding weather resistance—excellent anti-UV performance and low yellowing tendency, ensuring long-term durability even in harsh outdoor environments. It also features low shrinkage rate and superior chemical stability, making it the first choice for high-durability applications. What’s more, its low volatility, minimal VOC emissions, and broad compatibility with various resins and fillers make it widely favored in industries demanding long-term reliable performance, including automotive coatings, renewable energy equipment, marine coatings, and electronic encapsulation.
Our HHPA is produced with strict quality control, ensuring consistent batch performance, high purity, and compliance with international standards (RoHS, REACH). It offers excellent processability with low viscosity after melting, facilitating smooth production operations and reducing manufacturing costs for our global B2B clients. Whether for high-end coating projects or advanced polymer synthesis, HHPA delivers reliable performance and competitive advantages for your business.
Low melting point, low viscosity, long pot life (about 6 days). The cured product has excellent electrical properties, heat resistance (heat distortion temperature 110–130°C) and chemical corrosion resistance, used in electronic packaging, casting and composite materials.
No double bonds in the molecule, endowing the resin with excellent weather resistance, light resistance and heat resistance. Widely used in automotive coatings, powder coatings, coil coatings and amino polyester paints.
Used as intermediates for artificial marble, insulating materials, adhesives, plasticizers and rust inhibitors.
Used in photoresists and resist inks to improve material insulation and reliability.
Hexahydrophthalic Anhydride (HHPA, CAS 85-42-7) is a high-performance saturated cyclic anhydride, specially designed as a premium curing agent for epoxy resins and a key intermediate for high-grade polymer synthesis. With a standard purity of ≥99%, it presents as white crystalline powder at room temperature and easily melts into a clear liquid at around 35ºC, distinguishing itself from unsaturated anhydrides (e.g., THPA) by its stable saturated molecular structure.
As a professional epoxy curing agent, HHPA endows cured epoxy systems with outstanding weather resistance—excellent anti-UV performance and low yellowing tendency, ensuring long-term durability even in harsh outdoor environments. It also features low shrinkage rate and superior chemical stability, making it the first choice for high-durability applications. What’s more, its low volatility, minimal VOC emissions, and broad compatibility with various resins and fillers make it widely favored in industries demanding long-term reliable performance, including automotive coatings, renewable energy equipment, marine coatings, and electronic encapsulation.
Our HHPA is produced with strict quality control, ensuring consistent batch performance, high purity, and compliance with international standards (RoHS, REACH). It offers excellent processability with low viscosity after melting, facilitating smooth production operations and reducing manufacturing costs for our global B2B clients. Whether for high-end coating projects or advanced polymer synthesis, HHPA delivers reliable performance and competitive advantages for your business.
Low melting point, low viscosity, long pot life (about 6 days). The cured product has excellent electrical properties, heat resistance (heat distortion temperature 110–130°C) and chemical corrosion resistance, used in electronic packaging, casting and composite materials.
No double bonds in the molecule, endowing the resin with excellent weather resistance, light resistance and heat resistance. Widely used in automotive coatings, powder coatings, coil coatings and amino polyester paints.
Used as intermediates for artificial marble, insulating materials, adhesives, plasticizers and rust inhibitors.
Used in photoresists and resist inks to improve material insulation and reliability.
