Patent ID: 8829153
Filing Date: 2014-09-09
Classification: C08G,C08K,C08L,Y10T

Abstract:
1. A polyimide precursor composition, comprising: (A) a polyamic acid ester; (B) a thermal imidization accelerator; and (C) an organic solvent that can dissolve the polyamic acid ester (A) and the thermal imidization accelerator (B), wherein: the thermal imidization accelerator is a compound comprising a carboxylic acid group and a structure of formula (N-1) or (N-2): such that at least one structure of formula (N-1) or (N-2) is a structure of formula (ND-1) or (ND-2): D represents a protecting group that is deprotected by heating to a temperature of at most 300° C.; at least one part of each structure of formula (N-1) is bonded to an aromatic ring or a carbonyl group or is a part of a guanidine framework; the nitrogen atom of each structure of formula (N-2) is bonded to a carbon atom constituting an unsaturated bond; when the structure of formula (N-1) is a part of the guanidine framework, at least one of the two (N-1) structures contained in the guanidine framework is bonded to an aromatic ring or a carbonyl group; the structure of formula (ND-1), in the two bonds not forming a bond with the protecting group D, is not directly bonded to an aromatic ring or a carbonyl group; and the thermal imidization accelerator (B) comprises at least one of the structure of formula (ND-1) or (ND-2) per each one of the carboxylic acid group.