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2 070 210

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C1

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IPC

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Application

5021807/04, 1992-01-15

(22)

Actual filing date

1992-01-15

(45)

Published

1996-12-10

(72)

Inventor

Lavrov Sergej ViktorovichBerendjaev Vladimir IvanovichKuznetsov Aleksandr AlekseevichKotov Boris Valentinovich

(73)

Holder

Lavrov Sergej ViktorovichBerendjaev Vladimir IvanovichKuznetsov Aleksandr AlekseevichKotov Boris Valentinovich

PROCESS FOR PREPARING POLYIMIDES Russian patent published in 1996 - IPC

Abstract RU 2070210 C1

FIELD: chemistry of highly resistant polymers, namely polyimides. SUBSTANCE: claimed process for preparing polyimides comprises polycondensation of diamine and tetracaboxylic acid or derivative thereof such as diester, tetraester or diamide at 100-180 C in aromatic carboxylic acid or mixtures thereof. EFFECT: more efficient preparation process.

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RU 2 070 210 C1

Authors

Lavrov Sergej Viktorovich

Berendjaev Vladimir Ivanovich

Kuznetsov Aleksandr Alekseevich

Kotov Boris Valentinovich

Dates

1996-12-10—Published

1992-01-15—Filed

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