Flame retardant polyoxymethylene diphosphonates

Details Flame retardant polyoxymethylene diphosphonates Flame retardant polyoxymethylene diphosphonates

1976-05-19

1978-01-10

Jacobs, Lewis T.

Chemistry of carbon compounds

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

260 25AJ, 260 457P, 260 458R, 260932, 260969, C07F 902

Patent

active

040679314

ABSTRACT:
Polyoxymethylene diphosphonates having the formula ##STR1## wherein the R groups are the same or different and are selected from alkyl, haloalkyl, hydroxyalkyl, or (R.sup.1 and R.sup.2) or (R.sup.3 and R.sup.4) are joined together to form a ring structure are disclosed. These compounds are useful as flame retardants for organic resins in general, and especially for foamed polyurethane resins.

REFERENCES:
patent: 3515776 (1970-06-01), Baranauckas et al.
patent: 3737397 (1973-06-01), Baranauckas et al.
patent: 3830890 (1974-08-01), Kerst et al.

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