Cyclic phosphonates

Details Cyclic phosphonates Cyclic phosphonates

1975-04-07

1976-08-31

Powell, William A.

Chemistry of carbon compounds

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

106 15FP, 156321, 156327, 252 81, 260928, 260953, 260969, 260937, 260961, 428428, 428921, 428538, E05F 1100, C09J 300

Patent

active

039781666

ABSTRACT:
Alcohols preferably having a pka below that of propanol-1 are heated with certain heterocyclic phosphites to give phosphonates and certain heterocyclic phosphonites, to give phosphinates. If small amounts of alcohols are employed, the products are generally polymeric in nature whereas if larger amounts of the alcohol are employed, there is generally ring opening to the simpler monomer, or isomerization to the phosphonate or phosphinate. The products are useful as fire retardants and as adhesives for glass. Pentaerythritol phosphite can be self-polymerized by such heating to form the adhesive polymer.

REFERENCES:
patent: 2586884 (1952-02-01), Fontoy et al.
patent: 3053878 (1962-09-01), Friedman et al.
patent: 3141032 (1964-07-01), Friedman

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