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US 4,066,619 AGranted
4-Hydroxydiphenyl sulfoxide compositions
AssigneeThe B. F. Goodrich Company
InventorDwight William Chasar
Life of this patent
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Abstract
Polyolefins are stabilized against heat and light degradation by including in said polyolefins an unsymmetrical 4-hydroxydiphenyl sulfoxide.
Claims10
A polyolefin containing a stabilizing amount of a 4-hydroxydiphenyl sulfoxide of the formula ##STR8## wherein R.sub.1 is hydrogen, R.sub.2 is a lower alkyl or halogen, wherein R.sub.3 is hydrogen or a lower alkyl from one to 6 carbon atoms, R.sub.4 is hydrogen or lower alkyl, R.sub.6 is hydrogen, lower alkyl or alkoxy containing from 1 to 6 carbon atoms and R.sub.7 is hydrogen or lower alkyl from 1 to 6 carbon atoms.
Dependencies are inferred from the claim text.