POLYIMIDE PRECURSOR SOLUTION COMPOSITION AND METHOD FOR PRODUCING POLYIMIDE FILM USING THE SAME

• Main Authors: TERADA TAKESHI, NAGAO KEIGO
• Format: Patent
• Language: English; Japanese
• Published: 01.09.2016
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a polyimide precursor solution composition having a high concentration and a low solution viscosity, which can produce a polyimide film excellent in heat resistance, mechanical characteristics or the like.SOLUTION: There is provided a polyimide precursor solution composition which comprises an aromatic tetracarboxylic acid component and an aromatic diamine component comprising an aromatic tetracarboxylic acid diester, where 50 mol% or more of the aromatic tetracarboxylic acid component comprises a 3,3',4,4'-biphenyltetracarboxylic acid diester, the aromatic diamine component contains p-phenylene diamine and 4,4'-diaminodiphenyl ether, the ratio of the paraphenylenediamine in the aromatic diamine component is 50 mol% and the composition comprises imidazoles.SELECTED DRAWING: None 【課題】耐熱性や機械的特性などに優れたポリイミド膜を製造することができる、高濃度かつ低溶液粘度のポリイミド前駆体溶液組成物を提供すること。【解決手段】芳香族テトラカルボン酸ジエステルからなる芳香族テトラカルボン酸成分と芳香族ジアミン成分とを含有するポリイミド前駆体溶液組成物であって、前記芳香族テトラカルボン酸成分は、５０モル％以上が３，３'，４，４'−ビフェニルテトラカルボン酸ジエステルからなり、前記芳香族ジアミン成分は、ｐ−フェニレンジアミンと４，４'−ジアミノジフェニルエーテルとを含み、芳香族ジアミン成分中のパラフェニレンジアミンの割合が５０モル％以上であり、イミダゾール類を含むことを特徴とする、ポリイミド前駆体溶液組成物。【選択図】なし