Patent ID: 9285680
Filing Date: 2016-03-15
CPC Classification: C08F,C08G,C08L,C09D,C09J,G03F

Claim Text:
1. A method of making a base agent of a photosensitive polyimide composition comprising the steps of: polymerizing an aliphatic diamine monomer having a long carbon chain, another diamine monomer, a dianhydride monomer, and an anhydride monomer in an aprotic solvent to obtain a polyamine acid, wherein the long carbon chain of the aliphatic diamine monomer includes 6 carbons to 40 carbons; imidizing the polyamine acid to obtain a polyimide solution comprising a soluble polyimide; and grafting a grafting monomer having a main carbon chain to the soluble polyimide to obtain the base agent of the photosensitive polyimide composition, wherein each of two ends of the main carbon chain of the grafting monomer respectively has a double bond and an epoxy group.