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US 4,117,041 AGranted
Flame retardant polymeric compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorRandolph Joseph Guschl
Life of this patent
Estimating the term…
Abstract
Oligomers of (substituted phenoxy)cyclotriphosphazenes and aromatic diols render polymers such as polyesters, polyolefins, etc., in the form of fibers, films and other shapes permanently flame retardant.
Claims6
A compound of the formula ##STR10## wherein each of R.sub.1 to R.sub.10 is a substituent of the formula ##STR11## where X.sub.3 is hydrogen, bromine and chlorine, and R.sub.11 is a linking group derived from bisphenol A, resorcinol, hydroquinone, bisphenol S and p,p'-dihydroxybiphenyl, and
- n is the number 1 or greater.
Dependencies are inferred from the claim text.