Carbamate-phosphonates, and process of preparation

Details Carbamate-phosphonates, and process of preparation Carbamate-phosphonates, and process of preparation

1975-09-18

1978-03-07

Ford, John M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603264, 260938, 260 25AJ, C07D20708, C07D21132, C07F 940

Patent

active

040779645

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: 3690941 (1972-09-01), Reuter et al.
patent: 3758554 (1973-09-01), Gaj
patent: 3763283 (1973-10-01), Curgan
patent: 3835204 (1974-09-01), Weil
patent: 3899548 (1975-08-01), Petersen et al.
patent: 4029679 (1977-06-01), Kotzsch et al.

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