Hydrogen phosphonates

Details Hydrogen phosphonates Hydrogen phosphonates

1976-09-03

1978-04-25

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260927R, C07F 938, C08K 517, C08K 518

Patent

active

040862054

ABSTRACT:
The present invention relates to cyclic phosphorus compounds and processes for the preparation thereof.
The present invention relates to a process for the preparation of certain derivatives of cyclic hydrogenphosphonates which are diisocyanate derivatives formed as adducts or as polymers.
The cyclic phosphorus compounds are useful as flame retardants with organic polymers, such as polyurethanes, polyesters, and polyamides.

REFERENCES:
patent: 2957856 (1960-10-01), Guest et al.
patent: 3413382 (1968-11-01), Ulrich
patent: 3887655 (1975-06-01), Shim
patent: 3966849 (1976-06-01), Noetzel et al.
patent: 3978167 (1976-08-01), Albright
patent: 3997505 (1976-12-01), Albright
patent: 4007236 (1977-02-01), Duffy et al.
Sehring - Chem. Abs. 79, 115722k, (1973).

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