Diethyl hydroxymethylphosphonate esters, their preparation and u

Details Diethyl hydroxymethylphosphonate esters, their preparation and u Diethyl hydroxymethylphosphonate esters, their preparation and u

1975-06-25

1977-05-17

Raymond, Richard L.

Chemistry of carbon compounds

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

260 25AJ, 260971, C07F 932

Patent

active

040242072

ABSTRACT:
Novel diesters of diethyl hydroxymethylphosphonate of the formula: ##STR1## in which R.sub.1 and R.sub.4 are alkylene radicals --(CH.sub.2).sub.m -- in which m is 0 or an integer, R.sub.2 and R.sub.3 are H or alkyl radicals, the total number of carbon atoms in R.sub.1, R.sub.2, R.sub.3 and R.sub.4 being not more than 10, are described.
These diesters are valuable flameproofing agents for rigid and flexible polyurethane foams and for thermoplastic polyolefin and polyester foams.

REFERENCES:
patent: 2710301 (1955-06-01), Morris et al.
patent: 2989562 (1961-06-01), Swern et al.
patent: 3030347 (1962-04-01), O'Brien et al.

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