Spiro(bis)indane bis-oxyphthalic acids and functional derivative

Details Spiro(bis)indane bis-oxyphthalic acids and functional derivative Spiro(bis)indane bis-oxyphthalic acids and functional derivative

1988-01-20

1989-09-05

Shah, Mukund J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549241, 562473, 562466, C08G 6362

Patent

active

048640344

ABSTRACT:
Spiro(bis)indane bis-oxyphthalic acid bisimides are prepared by the reaction of a nitro- or halo-substituted phthalimide with a salt of a 6,6'-dihydroxy-3,3,3'3'-tetramethylspiro(bis)indane. The bisimides may be converted to the corresponding dianhydrides, which react with diamines to form polyetherimides, or to the free tetracarboxylic acids or their salts, esters or amides.

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patent: 4329496 (1982-05-01), Webb
patent: 4736016 (1988-04-01), Brunelle et al.

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