Unsaturated phosphorus-containing carboxylic acid derivatives

Details Unsaturated phosphorus-containing carboxylic acid derivatives Unsaturated phosphorus-containing carboxylic acid derivatives

1976-11-16

1978-10-10

Sutto, Anton H.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

C07F 932

Patent

active

041196821

ABSTRACT:
Carboxylic acid derivatives of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl or haloalkyl radicals having a total of up to 8 carbon atoms, R.sub.3 is hydrogen or methyl, X is oxygen or sulfur and Y is linear or branched alkylene having up to 6 carbon atoms. The phosphorus-containing compounds are adapted to be incorporated in modacrylic polymers to render the copolymers and filaments and fibers made therefrom flame-resistant. The filaments and fibers made from modacrylic copolymers containing units derived from the monomers of the formula have good thermostability against discoloration.

REFERENCES:
patent: 2934555 (1960-04-01), O'Brien et al.
patent: 3766252 (1973-10-01), Schmidt et al.
patent: 4016222 (1977-04-01), Dursch
patent: 4016224 (1977-04-01), D'Alelio

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