Method for the manufacture of organo substituted phosphonium sal

Details Method for the manufacture of organo substituted phosphonium sal Method for the manufacture of organo substituted phosphonium sal

1975-12-15

1978-07-18

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 954

Patent

active

041015878

ABSTRACT:
Substituted phosphonium salts such as tetrakis(hydroxymethyl)phosphonium chloride are prepared by reacting a metal phosphide selected from the group consisting of lithium phosphide, sodium phosphide, potassium phosphide, beryllium phosphide, magnesium phosphide, calcium phosphide, strontium phosphide, barium phosphide, boron phosphide, aluminum phosphide, gallium phosphide, and zinc phosphide, with an aldehyde having from 1 to 12 carbon atoms, the proportion of the aldehyde being at least 4 moles per gram atom of the phosphorus in the said phosphide. The reaction is conducted with at least one and a half moles of water per gram atom of phosphorus in the said phosphide and at least one mole of mineral acid being present per gram atom of phosphorus in the said phosphide, with or without a catalyst, and in the presence of an inert gas atmosphere. The products are fire retardants.

REFERENCES:
patent: 2743299 (1956-04-01), Flynn
patent: 2912466 (1959-11-01), Reuter
patent: 3007969 (1961-11-01), Reuter et al.
patent: 3013085 (1961-12-01), Buckler
patent: 3243450 (1966-03-01), Grayson
patent: 3666817 (1972-05-01), Carlson
patent: 3755457 (1973-08-01), Carlson
Reeves et al., J.A.C.S. 77, pp. 3923-3924, (1955).

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