POLYAMIC ACID SOLUTION COMPOSITION HAVING CARBON BLACK DISPERSED THEREIN, PROCESS FOR PRODUCTION OF SEMICONDUCTIVE POLYIMIDE RESIN BELT USING THE COMPOSITION, AND SEMICONDUCTIVE POLYIMIDE RESIN BELT

摘要

The present invention provides a carbon black-dispersed polyamic acid solution composition having a high solids content and a high carbon black content. The invention further provides an intermediate transfer belt using the polyamic acid solution composition. The carbon black-dispersed polyamic acid solution composition is obtained by uniformly dispersing carbon black in a polyamic acid solution obtained by reacting biphenyltetracarboxylic dianhydride and an aromatic diamine in an organic polar solvent. The biphenyltetracarboxylic dianhydride includes 2,3,3',4'-biphenyltetracarboxylic dianhydride and 3,3',4,4'-biphenyltetracarboxylic dianhydride. The aromatic diamine includes 4,4'-diaminodiphenyl ether and p-phenylenediamine. The polyamic acid solution has a solids content of 25 weight% or more.