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2 069 670

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Application

93009681/04, 1993-02-24

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Actual filing date

1993-02-24

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Published

1996-11-27

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Inventor

Chernova A.G.Savina M.E.Pinaeva N.K.Sekacheva N.V.Nekrasova L.P.Soljankin I.N.Kalugina E.V.Nurmukhomedov S.N.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Institut Plasticheskikh Mass Im.G.S.Petrova S Opytnym Moskovskim Zavodom Plastmass"

METHOD OF SYNTHESIS OF ALIPHATIC-AROMATIC POLYIMIDE Russian patent published in 1996 - IPC

Abstract RU 2069670 C1

FIELD: chemical technology, polymers. SUBSTANCE: method involves polycondensation of pyromellitic acid dianhydride, 1,12-dodecamethylenediamine or 1,10-decamethylenediamine, or mixture of above indicated diamines at mole ratio from (0.99:0.01) to (0.01:0.99), respectively. Additionally, diphenyloxidetetracarboxylic acid dianhydride is added to reaction medium at mole ratio of pyromellitic acid dianhydride and diphenyloxidetetracarboxylic acid dianhydride from (0.99:0.01) to (0.05:0.95), respectively. Obtained polyimides were processed under pressure by extrusion and casting method. EFFECT: improved method of synthesis. 1 tbl

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RU 2 069 670 C1

Authors

Chernova A.G.

Savina M.E.

Pinaeva N.K.

Sekacheva N.V.

Nekrasova L.P.

Soljankin I.N.

Kalugina E.V.

Nurmukhomedov S.N.

Dates

1996-11-27—Published

1993-02-24—Filed

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