Bis-phenoxyphthalic acid anhydrides

Details Bis-phenoxyphthalic acid anhydrides Bis-phenoxyphthalic acid anhydrides

1975-02-27

1976-03-16

Patten, James A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 78R, 260 78L, 260 78TF, 260326N, 2603463, 260520D, C07D49304, C07D49314

Patent

active

039445836

ABSTRACT:
The invention is concerned with dianhydrides derived from phenolphthalein and from bisphenol fluorenone by a process which can include the reaction of an N-methyl-nitrophthalimide with the dialkali metal salt of either of the aforementioned two dihydroxy compounds.

REFERENCES:
patent: 3015647 (1962-01-01), Lo
patent: 3182073 (1965-05-01), Loncrini
patent: 3850964 (1974-11-01), Williams
patent: 3879428 (1975-04-01), Heath

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