Carbamate-phosphonates as flame-proofing agents in polyurethane

Details Carbamate-phosphonates as flame-proofing agents in polyurethane Carbamate-phosphonates as flame-proofing agents in polyurethane

1977-10-03

1978-09-12

Ivy, C. Warren

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521906, C08G 1832, C08G 1838, C08G 1814

Patent

active

041136713

ABSTRACT:
Carbamates of diethyl methylphosphonate of the formula: ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, are linear or branched alkyl or hydroxyalkyl radicals containing 2 or 3 carbon atoms, or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached form a ring containing 4 or 5 carbon atoms, or R.sub.1 is phenyl and R.sub.2 is hydrogen, may be prepared by reacting diethyl hydroxymethyl-phosphonate chloroformate with an amine, and find application in flameproofing rigid or flexible polyurethane foams.

REFERENCES:
patent: 3235517 (1966-02-01), Beck
patent: 3763283 (1973-10-01), Curgan
patent: 3835204 (1974-09-01), Weil
patent: 3899453 (1975-08-01), Walsh
patent: 3935162 (1976-01-01), Golborn
patent: 4024207 (1977-05-01), Biehler
patent: 4052487 (1977-10-01), Sturtz

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