Cyclic diphosphonates

Details Cyclic diphosphonates Cyclic diphosphonates

1979-09-28

1981-05-19

Sutto, Anton H.

Chemistry of carbon compounds

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

260 457P, C07F 915, C08K 553

Patent

active

042684595

ABSTRACT:
Phosphonate compounds of the formula ##STR1## wherein R is hydrogen or methyl, R.sub.1 is hydrogen, methyl or ethyl, and y is an integer from 0 to 2, are useful as flame retardants for thermoplastic polymers, especially linear thermoplastic polyesters.

REFERENCES:
patent: 3511857 (1970-05-01), Baranaueckas et al.
patent: 3515776 (1970-06-01), Baranaueckas et al.
patent: 3890409 (1975-06-01), Mayerhoefer et al.
patent: 3922323 (1975-11-01), Reese et al.

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