Process for preparing flame retardant bisimide compositions

Details Process for preparing flame retardant bisimide compositions Process for preparing flame retardant bisimide compositions

1993-10-04

1994-04-12

Lee, Mary C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548485, 548522, C07D20956, C07D20936, C07D207452

Patent

active

053027230

ABSTRACT:
A process for preparing a flame retardant bisimide composition which comprises reacting i) diamine with ii) a mixture of ethylenically unsaturated dicarboxylic acid anhydride and a halogenated compound containing aromatic or bicyclo groups and an anhydride groups to form an intermediate bisamic acid composition, the molar ratio of the halogenated compound to the ethylenically unsaturated dicarboxylic acid anhydride being no more than 1:1; and dehydrating the bisamic acid composition to ring close the end groups and form a flame retardant bisimide composition having end groups which contain ethylenically unsaturated carbon-carbon bonds and end groups free of non-benzenoid unsaturation containing halogen atoms and aromatic or bicyclo groups.

REFERENCES:
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patent: 4130600 (1978-12-01), Zahir et al.
patent: 4876325 (1989-10-01), Olson et al.
patent: 4883843 (1989-11-01), Taniuchi et al.
patent: 4985478 (1991-01-01), Kameyama et al.
patent: 5004775 (1991-04-01), Olson et al.
patent: 5034503 (1991-07-01), Camberlin
CA 104(9):69012p Phosphorus-containing dimides. Saito et al., p. 699, 1986.
CA 107(22):199587c Polyesterether . . . properties. Markezich, p. 47, 1987.
CA 113(21):191157r Manufacture . . . polymers. Matsuba et al., p. 703, 1990.

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