Silicone-containing soluble polyimide precursor and production thereof

Abstract

Abstract PURPOSE:To obtain the titled precursor of moderate viscosity outstanding in coatability, capable of giving coating film by calcination which is tough and high in adhesivenes to glass etc., by reaction, in a solvent, between a tetracarboxylic dianhydride, diamine, aminosilicone compound etc. CONSTITUTION:(A) A tetracarboxylic dianhydride or its diester, (B) a diamine, (C) an amino silicone compound and (D) a silicone compound are dissolved in a solvent (e.g. N-methylpyrrolidone) to carry out reaction at e.g. 0-200 deg.C, thus obtaining the objective precursor with a logarithmic viscosity of 0.05-5dl/g, of formula I [L is of formula II (R<1> is aromatic group) etc.; R<2> is 2-12C aliphatic group; R<3> is of formula III (S is 1-4); R<4> is 1-6C alkyl etc.; k is 0-3; m is 0-3; k+m>=1; n>=1; p and q are each positive integer].

Inventors

• 👤 Koichi Kunimune
• 👤 国宗　弘一
• 👤 Haruo Kato
• 👤 加藤　春雄
• 👤 Kichiya Kutsuzawa
• 👤 沓沢　吉也

Bibliographic Details