Flame resistance of foams using diethyl hydroxymethylphosphonate

Details Flame resistance of foams using diethyl hydroxymethylphosphonate Flame resistance of foams using diethyl hydroxymethylphosphonate

1976-11-01

1978-07-18

Welsh, M. J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521108, 521174, 521143, 521182, C08G 1814

Patent

active

041014723

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: 3830890 (1974-08-01), Kerst et al.

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