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

1981-10-27

Kight, III, John

Compositions: coating or plastic

Coating or plastic compositions

Contains fireproofing or biocidal agent

8116P, 162159, 260 457P, 260DIG24, 428265, 428921, 525 20, C08K 553, C09D 518, D21H 500

Patent

active

042971381

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: 3855359 (1974-12-01), Weil
patent: 4005034 (1977-01-01), Weil
patent: 4086303 (1978-04-01), Weil
patent: 4144387 (1979-03-01), Anderson et al.
patent: 4162353 (1979-07-01), Papa et al.
patent: 4199534 (1980-04-01), Fearing

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