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    • 4. 发明授权
    • Process for producing polyimide
    • 聚酰亚胺生产工艺
    • US06916898B2
    • 2005-07-12
    • US10221501
    • 2001-03-13
    • Takashi KurokiAtsushi ShibuyaShoji Tamai
    • Takashi KurokiAtsushi ShibuyaShoji Tamai
    • C08G73/10C08G69/26
    • C08G73/1032C08G73/1007
    • A process of preparing a polyimide of the present invention comprises effecting an imidization reaction of a diamine and a tetracarboxylic dianhydride in a solvent containing 50 to 100% by weight of an equimolar composition of a nitrogen-containing cyclic compound indicated by chemical formula (1) below and a phenol indicated by chemical formula (2) below: in formula (1), X represents —CH2— or —N(CH3)—, and in formula (2), R1 and R2 may be the same as, or different from, each other and represent each any one of —H, —OH, —CH3, —C2H5, —C3H7, —C4H9, —C5H11, —C6H13, —C7H15, —C8H17, —C9H19, —C10H21, —OCH3, —O(C6H5), —NO2, —Cl, —Br and —F.
    • 制备本发明的聚酰亚胺的方法包括在包含50-100重量%的等摩尔组合物的化学式(1)所示的含氮环状化合物的溶剂中进行二胺和四羧酸二酐的酰亚胺化反应, 在下面的化学式(2)表示的酚:在式(1)中,X表示-CH 2 - 或-N(CH 3) - ,并且在 式(2)中,R 1和R 2可以彼此相同或不同,表示-H,-OH,-CH 3个3个或3个以上的取代基,-C 2 - C 4 H 9,-C 5 H 11,-C 6 H C 13,C 7 H 15,-C 8 H 17, - C 8 - , - C 9 H 20,-C 10 H 21,-OCH 3 N, -O(C 6 H 5),-NO 2,-Cl,-Br和-F。