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2 028 291

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IPC

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Application

5048636/04, 1992-06-18

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Actual filing date

1992-06-18

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Published

1995-02-09

(72)

Inventor

Liakumovich A.G.Samuilov Ja.D.Budkin V.A.Lekareva V.S.

(73)

Holder

Tsentr Po Razrabotke Ehlastomerov Pri Kazanskom Gosudarstvennom Tekhnologicheskom Universitete

METHOD OF SYNTHESIS OF BIS-IMIDES OF ENDO-NORBORNEN-2,3-DICARBOXYLIC ACID Russian patent published in 1995 - IPC

Abstract RU 2028291 C1

FIELD: organic chemistry. SUBSTANCE: product - bis-imides of endo-norbornen-2,3-dicarboxylic acid. Reagent 1: anhydride of endo-norbornen-2,3-dicarboxylic acid. Reagent 2: diamine. Reaction conditions: solvent is dimethylformamide, in the presence of isopropanol at the molar ratio anhydride: diamine:dimethylformamide:isopropanol = 0.2:0.1:(0.13-0.26):(1.3-2.0). Isolation of the end product is carried out by addition of H2O or isopropanol to the reaction mass at 80-100 C. EFFECT: improved method of synthesis. 1 tbl

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RU 2 028 291 C1

Authors

Liakumovich A.G.

Samuilov Ja.D.

Budkin V.A.

Lekareva V.S.

Dates

1995-02-09—Published

1992-06-18—Filed

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