Patent ID: 7018776
Filing Date: 2006-03-28
Classification: C08G,C08L,C09D,G03F

Abstract:
1. A non-photosensitive polyimide precursor composition comprising: a) one or more polyamic acids soluble in gamma-butyrolactone (GBL) and aqueous tetramethyl ammonium hydroxide, and with the proviso that the polyamic acid is also resistant to a solvent used in a photosensitive composition with which the polyimide precursor composition is to be used; b) a solvent comprising gamma-butyrolactone; and c) one or more adhesion promoters selected from the group consisting of the structures described by Formulae I–VI wherein R 1 is selected from the group consisting of H, C 1 –C 10 linear, cyclic or branched alkyl, phenyl, halophenyl and alkyl substituted phenyl, R 2 is selected from the group consisting of C 1 –C 10 linear, cyclic or branched alkyl, phenyl, halophenyl and alkyl substituted phenyl or one of the following moieties VII, VIII, or IX where R 3 is C 1 –C 4 linear or branched alkyl or C 1 –C 4 linear or branched alkoxy group, R 4 , R 5 and R 6 are independently a C 1 –C 4 linear or branched alkyl group, m is an integer from 1 to about 4, and n is an integer from 1 to about 5.