Tetrahydrophthalic Anhydride (THPA) is being produced by the reaction of Butadiene with Maleic Anhydride.
CAS-No. 85-43-8
EINECS-No. 201-605-4
Chemical formula: C8H8O3
Synonym: 1,2,3,6-Tetrahydrophthalic Anhydride
Uses/applications: Polyester resins, curing agent for epoxy resins, Plasticizers, Adhesives, intermediate for Alkyd resins, etc.