Patent ID: 6600006
Filing Date: 2003-07-29
Classification: C08G,G03F,H01L

Abstract:
A polyamic ester prepared by partially substituting hydrogen atoms of carboxylic groups of a polyamic acid with acid labile groups that are functional groups capable of binding to a carboxylic group and degrading to yield carboxylic acid upon generation of acid by exposure, the polyamic ester comprising one or more repeating units represented by Formula 1, and each of at least one terminal of said polyamic ester molecule terminates with the same or different reactive end-capping monomer: wherein in Formula 1, R1 and R2 are independently a hydrogen atom, or an acid labile group; X is a tetravalent, an aromatic or an aliphatic organic group; Y is a divalent, an aromatic or an aliphatic organic group; and m is an integer equal to or greater than 1.