Cyclic dianhydrides prepared from maleic anhydride

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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204158HE, 528353, 549236, 549241, C07D30793

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active

044905459

ABSTRACT:
Cyclic dianhydrides and polyimides are prepared from maleic anhydride compounds and diolefins. The diolefins are alpha-, omega-linear diolefins of up to 100 carbon atoms or cyclic diolefins of up to 40 carbon atoms. The polyimides and copolyimides prepared from these cyclic dianhydrides are useful in films, fibers and coatings.

REFERENCES:
patent: 3472749 (1969-10-01), Bradshaw
patent: 4360657 (1982-11-01), Nimry et al.
patent: 4371701 (1983-02-01), Fields et al.

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