Phosphorus-containing compounds

Details Phosphorus-containing compounds Phosphorus-containing compounds

1976-10-07

1978-11-28

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603453, 260936, 528287, 528167, 528169, 528273, C07F 930

Patent

active

041275900

ABSTRACT:
The present invention relates to a phosphorus-containing compound of the formula ##STR1## wherein each of R.sup.1 is a hydrogen atom or hydrocarbon group having 1-10 carbon atoms which may contain a hydroxyl group, and both R.sup.1 's may together form a dehydrated ring when both of R.sup.1 's represent hydrogen atoms, each of R.sup.2 and R.sup.3 is a member selected from the group consisting of halogen atoms and hydrocarbon groups having 1-10 carbon atoms, and each of n2 and n3 is an integer of 0-4. These compounds are especially useful for incorporation into polymers, such as polyesters, as flame-retardants. Further, such phosphorus-containing compound imparts excellent flame-retardant properties to such polyesters, while at the same time does not deleteriously affect the physical properties of the polyester.

REFERENCES:
patent: 3702878 (1972-11-01), Saito

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