| abstract |
Particles comprising a polyimide obtained by reacting colored quenching powders with diamines and dianhydride monomers in substantially the same molar ratio, and a pigment contained with the polyimide, wherein a portion of the pigment is located on the outer surface of the particle . Moreover, it is described that colored polyimide films also contain colored quenching powder and can exhibit low gloss, low transparency and good insulation. |