Aromatic phosphinic acids containing sulfone linkage

Details Aromatic phosphinic acids containing sulfone linkage Aromatic phosphinic acids containing sulfone linkage

1977-02-09

1978-04-04

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 2P, 260551P, 260607A, C07F 930, C08G 7904

Patent

active

040827933

ABSTRACT:
Phosphinic acids of the formula ##STR1## wherein (A) R is ##STR2## (1) X is 3-phenylene or 4-phenylene, and (2) Y is a direct bond, ##STR3## (B) R' is R, lower alkyl of from 1 to 3 carbon atoms, 4-biphenylyl, or phenyl. These acids are neutralized with an equivalent amount of alkali metal carbonates to form alkali metal salts which react with ZnCl.sub.2 to form polymers having high thermal stability.

REFERENCES:
patent: 3316332 (1967-04-01), Calhoun et al.
patent: 3705920 (1972-12-01), Patchett
patent: 3966486 (1976-06-01), King et al.
Nannelli et al., "Office of Naval Research-Technical Report No. 17", Feb., 976.

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