METHOD FOR PRODUCING POLYIMIDE

To provide a polyimide that has high transparency and a low degree of coloration even though it uses dimer diamine.SOLUTION: A method for producing a polyimide includes causing a reaction to occur between a tetracarboxylic acid anhydride component that comprises a benzophenone tetracarboxylic acid d...

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Bibliographische Detailangaben
Hauptverfasser:	NISHIYAMA TEPPEI, YAMADA HIROAKI, SUDO YOSHIKI, KAKIZAKA KOTA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	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
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Beschreibung
Zusammenfassung:	To provide a polyimide that has high transparency and a low degree of coloration even though it uses dimer diamine.SOLUTION: A method for producing a polyimide includes causing a reaction to occur between a tetracarboxylic acid anhydride component that comprises a benzophenone tetracarboxylic acid dianhydride and a diamine component that comprises a dimer diamine composition primarily composed of a dimer diamine with two terminal carboxylic acid groups of dimer acid having been substituted with a primary aminomethyl group or amino group. In the dimer diamine composition, the amount of aliphatic double bond quantified by 1H-NMR is 1.0 mol% or less relative to 1 mol of a CH2 group (-CH2-) in a primary aminomethyl group (NH2CH2-).SELECTED DRAWING: None 【課題】ダイマージアミンを使用しながら、透明性が高く、着色の程度が低いポリイミドを提供する。【解決手段】ベンゾフェノンテトラカルボン酸二無水物を含有するテトラカルボン酸無水物成分と、ダイマー酸の二つの末端カルボン酸基が１級アミノメチル基又はアミノ基に置換されてなるダイマージアミンを主成分とするダイマージアミン組成物を含有するジアミン成分と、を反応させてなるポリイミドの製造方法。ダイマージアミン組成物は、１Ｈ－ＮＭＲにより定量される脂肪族二重結合が、１級アミノメチル基（ＮＨ２ＣＨ２－）におけるＣＨ２基（－ＣＨ２－）１モルに対して１．０モル％以下である。【選択図】なし