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US 4,128,530 AGranted
Mercapto phenolic and alkylthio phenolic antioxidants
AssigneeThe Goodyear Tire & Rubber Company
InventorKirkwood S. Cottman
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Abstract
2-Mercapto phenol and/or 4-mercapto phenol are reacted with compounds containing olefinic unsaturation, for example, styrene and isobutylene, to form alkylthio phenolic antioxidants such as 2,6-di-tert.butyl-4-(tert.butylthio) phenol and 2,6-di(.alpha.-phenylethyl)-4-(.alpha.-phenylethylthio) phenol.
Claims2
An oxidizable polymer susceptible to oxidation degradation having incorporated therein a phenolic compound having the following structural formula:
- ##STR2## wherein R.sup.1 is selected from the group consisting of hydrogen and .alpha.-phenyl ethyl, R.sup.2 is .alpha.-phenyl ethyl and R.sup.3 is selected from the group consisting of .alpha.-phenyl ethyl and .beta.-phenyl ethyl.
Dependencies are inferred from the claim text.