Process of synthesizing di-polyoxylalkylene hydroxymethylphospho

Details Process of synthesizing di-polyoxylalkylene hydroxymethylphospho Process of synthesizing di-polyoxylalkylene hydroxymethylphospho

1974-08-05

1976-07-20

Sutto, Anton H.

Chemistry of carbon compounds

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

260 306R, 260 457P, 2605024R, 260970, C07F 940, C08F 244

Patent

active

039707296

ABSTRACT:
Di-polyoxyalkylene hydroxymethylphosphonate is prepared by contacting phosphorous acid and formaldehyde, or a formaldehyde polymer such as trioxane or paraformaldehyde, preferably in an aqueous medium, to yield a hydroxymethylphosphonic acid intermediate. The intermediate is then contacted wiyth an alkylene oxide selected from ethylene oxide, propylene oxide or butylene oxide to yield di-polyoxyalkylene hydroxymethylphosphonate having the structureal formula: ##EQU1## wherein R is CH.sub.2, ##EQU2## n + m = 2-10. Di-polyoxyalkylene hydroxymethylphosphonate is utilized as a flame retardant, a stabilizer for polyester film and as a plasticizer for cellulose acetate and polyvinyl acetate, among others.

REFERENCES:
patent: 2579810 (1951-12-01), Fields
patent: 3294710 (1966-12-01), Rosenberg et al.
Van Wazer "Phosphorus and its Compounds," vol. 1, p. 371, (1958), Interscience Publishers Inc., New York.

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