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2 034 861

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IPC

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Application

4917393/05, 1991-03-07

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Actual filing date

1991-03-07

(45)

Published

1995-05-10

(72)

Inventor

Mikhajlov G.M.Korzhavin L.N.Kudrjavtsev V.V.Koton M.M.Maricheva T.A.Ivanova M.A.Bobrova N.V.Bronnikov S.V.Grigor'Eva N.A.Shkurko O.P.Borovik V.P.Jakopson S.M.Karchmarchik O.S.

(73)

Holder

Institut Vysokomolekuljarnykh Soedinenij RanNovosibirskij Institut Organicheskoj Khimii So RanAktsionernoe Obshchestvo Institut Khimicheskikh Volokon I Kompozitsionnykh Materialov S Ehksperimental'Nym Zavodom"

METHOD OF PREPARING OF POLYAMIDOACID SOLUTION FOR FIBER FORMING Russian patent published in 1995 - IPC

Abstract RU 2034861 C1

FIELD: chemical technology. SUBSTANCE: method involves fiber forming by condensation of 3,3', 4,4'-diphenyltetracarboxylic acid dianhydride and a mixture of p-phenylenediamine and 2,5-bis-(p-aminophenyl)-pyrimidine at the molar ratio (20-80):(80-20). Method is used in aviation and cosmic engineering. EFFECT: improved method of preparing. 1 tbl

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RU 2 034 861 C1

Authors

Mikhajlov G.M.

Korzhavin L.N.

Kudrjavtsev V.V.

Koton M.M.

Maricheva T.A.

Ivanova M.A.

Bobrova N.V.

Bronnikov S.V.

Grigor'Eva N.A.

Shkurko O.P.

Borovik V.P.

Jakopson S.M.

Karchmarchik O.S.

Dates

1995-05-10—Published

1991-03-07—Filed

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