METHOD FOR OBTAINING 1,3-PHENYLENEBISMALEIMIDE Russian patent published in 2008 - IPC C07D207/448

Abstract RU 2333906 C1

FIELD: chemistry.

SUBSTANCE: invention relates to obtaining 1,3-phenylenbismaleimide, which is used as chemical modifier for resin mixtures, as well as in production of heat-resistant polymers. Method is realised by means of interaction of malein anhydrate with 1,3-phenylendiamin in acetone medium with further dehydrocyclisation of the formed phenylenedimaleamin acid in presence of acetic anhydride and catalyst. Reaction of interaction of malein anhydrate with 1,3-phenylendiamin is carried out in presence of compound chosen from the line including saturated and unsaturated synthetic fatty acids C₁₀-C₁₈ and taken in amount of 5-10% of the mass of original 1,3-phenylendiamin.

EFFECT: increasedf output of 1,3-phenylenebismaleimide.

1 tbl, 16 ex

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RU 2 333 906 C1

Authors

Utrobin Nikolaj Pavlovich

Balakirev Anatolij Evgen'Evich

Dates

2008-09-20—Published

2007-01-09—Filed