VARNISH COMPOSITION, METHOD FOR PRODUCING VARNISH COMPOSITION, AND METHOD FOR PRODUCING POLYIMIDE RESIN

To provide a varnish composition capable of forming a polyimide resin having both less coloration and excellent mechanical characteristics, a method for producing the varnish composition, and a method for producing a polyimide resin using the varnish composition.SOLUTION: A varnish composition conta...

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Hauptverfasser:	SAIJO HIDEKI, TADOKORO KEISUKE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	To provide a varnish composition capable of forming a polyimide resin having both less coloration and excellent mechanical characteristics, a method for producing the varnish composition, and a method for producing a polyimide resin using the varnish composition.SOLUTION: A varnish composition contains a polyamic acid (A) and a solvent (S). As the polyamic acid (A), there is used a polymer of: an alicyclic tetracarboxylic acid dianhydride (A1-1); a small amount of an aromatic tetracarboxylic acid dianhydride (A1-2); and an aromatic diamine compound (A2).SELECTED DRAWING: None 【課題】着色の少なさと優れた機械的特性とを兼ね備えるポリイミド樹脂を形成できるワニス組成物と、当該ワニス組成物の製造方法と、当該ワニス組成物を用いるポリイミド樹脂の製造方法とを提供すること。【解決手段】ポリアミック酸（Ａ）と、溶媒（Ｓ）とを含むワニス組成物において、脂環式テトラカルボン酸二無水物（Ａ１－１）と、少量の芳香族テトラカルボン酸二無水物（Ａ１－２）と、芳香族ジアミン化合物（Ａ２）との重合体を、ポリアミック酸（Ａ）として用いる。【選択図】なし