POLYIMIDE FILM WITH TIN OR TIN SALT INCORPORATION RESULTING IN IMPROVED ADHESION

摘要

16 PE-0273-A TITLE POLYIMIDE FILM WITH TIN OR TIN SALT INCORPORATION RESULTING IN IMPROVED ADHESION A polyimide film having improved adhesion and thermal durability containing from 0.02 to 1% by weight of tin based on the weight of the film. A process for preparing a polyimide film is also described wherein a tin (II) or tin (IV) salt is introduced into a filmforming polyamide acid polymer prior to the casting step. 16