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US 4,308,193 AGranted
Halogenated tertiary phosphite esters
AssigneeOlin Corporation
InventorRichard J. Turley
Life of this patent
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Abstract
Disclosed are novel halogenated tertiary phosphite esters which are the reaction product of 4,4,4-trichloro-1,2-epoxybutane or 2,4,4,4-tetrachlorobutanol with a phosphorus trihalide. These compounds are useful as flame retardant additives in plastic resin compositions.
Claims7
A liquid curable epoxy composition comprising:
- a. an epoxy resin having more than one .alpha.-epoxy group in the molecule,
- b. a curing agent for said resin, and
- c. a halogenated tertiary phosphite ester additive in an amount effective to reduce the combustibility of said resin, said halogenated tertiary phosphite ester having the formula:
- ##STR4## wherein X is a halogen;
- n is an integer from one to three;
- and each R radical is independently selected from alkyl of 1 to about 20 carbon atoms, 2-haloalkyl of about two to about eight carbon atoms, alkaryl, aryl, halogenated aryl, and arylalkyl.
3 more elements
Dependencies are inferred from the claim text.