Patent ID: 8859715
Filing Date: 2014-10-14
Classification: C08G,C08L,C09K,H01L,Y02E,Y10T

Abstract:
1. A polyimide polymer solution, comprising: a solvent; and a polyimide polymer, wherein the polyimide polymer has at least one of a repeating unit of formula (D) and a repeating unit of formula (J) and at least one of a repeating unit of formula (Q) and a repeating unit of formula (T), one of B and B′ is cyclo-aliphatic compound, the other one of B and B′ is aromatic compound, a molar ratio of the cyclo-aliphatic compound to the aromatic compound is 1˜4, A and A′ are identical or different aromatic diamine monomers, wherein at least one of A and A′ is an aromatic diamine monomer with an ether group, the cyclo-aliphatic compound of B or B′ comprises: the aromatic compound of B or B′ comprises: A and A′ are individually selected from: