Polymeric antioxidants

Antioxidant polymers of the present invention comprise repeat units that include one or both of Structural Formulas (I) and (II): wherein: R is -H or a substituted or unsubstituted alkyl, acyl or aryl group; Ring A is substituted with at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Ring B is substituted with at least one -H and at least one tert-butyl group or substituted or unsubstituted n-alkoxycarbonyl group; Rings A and B are each optionally substituted with one or more groups selected from the group consisting of -OH, -NH, -SH, a substituted or unsubstituted alkyl or aryl group, and a substituted or unsubstituted alkoxycarbonyl group; n is an integer equal to or greater than 2; and p is an integer equal to or greater than 0. The invention also includes methods of using and preparing these polymers.

Attached files:


Patents:
US 7,507,454

Inventor(s): CHOLLI ASHOK L [US]; KUMAR VIJAYENDRA [US]; KUMAR JAYANT [US]; PARMAR VIRINDER SINGH [US]; SAMUELSON LYNNE ANN [US]; BRUNO FERDI

Type of Offer: Licensing



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