| abstract |
The invention relates to a color-developing polyimine film, comprising: a polyamidene polymer obtained by reacting a diamine monomer with a dianhydride monomer, wherein the diamine single system is composed of a diamine group And the dianhydride is composed of phenyl ether and phenylenediamine; and the dianhydride monomer is pyromellitic dianhydride; a matting agent comprising polyimine; and a coloring agent. The polyimine film of the present invention has a low gloss value, a low light transmittance, and a low coefficient of thermal expansion. |