Copolycondensation products of .beta.-haloalkyl phosphates and d

Details Copolycondensation products of .beta.-haloalkyl phosphates and d Copolycondensation products of .beta.-haloalkyl phosphates and d

1979-01-02

1980-09-30

Sutto, Anton H.

Chemistry of carbon compounds

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

C07F 940

Patent

active

042255228

ABSTRACT:
Copolycondensation products of .beta.-haloalkyl phosphates and dialkyl phosphonates are useful fire retardant agents. The products are prepared by heating the starting materials at a temperature of about 110.degree. to 250.degree. C., preferably in the presence of a nucleophilic catalyst, until at least one mole of alkyl halide per mole of phosphonate is driven off. Preferred are copolycondensation products obtained by substantially complete removal of halogen as alkyl halide.

REFERENCES:
patent: 3391226 (1968-07-01), Birum

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