| 摘要 |
PURPOSE:The titled composition, obtained by blending a specific amount of mica having a specified particle diameter with an aromatic polyamide-imide resin soluble in polar organic solvents, having improved heat resistance, moisture resistance, flexibility, etc., and further transparency and plane smoothness and suitable for flexible printed boards, etc. CONSTITUTION:A composition obtained by blending 95-65vol%, preferably 90-75vol% aromatic polyamide-imide resin, soluble in polar organic solvents, expressed by formula I or II (X is oxygen, sulfur, sulfonyl, etc.; n is >=2) or a mixture thereof and having >=0.5 reduced viscosity with 5-35vol%, preferably 10-25vol% plate, layer or scaly mica having 1-500mum, perferably 50-200mum particle diameter. |
