초록

Antioxidants containing a sulfonyl azide moiety react with polymers having carbon-hydrogen bonds thereby becoming non-extractable and non-migratory.

대표청구항 ▼

A sulfonyl azide antioxidant of the formula [Figure] wherein: R1 is alkyl of from 1 to 12 carbon atoms, cyclohexyl, C7-C10 alkyl-cyclohexyl, benzyl, or C8-C11 alkylbenzyl; R2 is hydrogen or has one of the values assigned to R1, with the proviso that R1 and R2 together have at least 2 carbon atoms; g

A sulfonyl azide antioxidant of the formula [Figure] wherein: R1 is alkyl of from 1 to 12 carbon atoms, cyclohexyl, C7-C10 alkyl-cyclohexyl, benzyl, or C8-C11 alkylbenzyl; R2 is hydrogen or has one of the values assigned to R1, with the proviso that R1 and R2 together have at least 2 carbon atoms; g has a value of from 0 to 5; X is a divalent bridge member selected from －CH2O－, －CH2NH－, or [Figure] m and n are each 1 or 2; and Z is, depending on the values of m and n, a divalent, trivalent or tetravalent group selected from: a. an alkylene group of from 2 to 5 carbon atoms when each of m and n is 1, b. a divalent or trivalent benzene group when n is 1 and m is 1 or when m is 1 and n is 2, and c. a divalent, trivalent or tetravalent group selected from naphthylene, diphenyl ether, and benzene groups when each of m and n is 1 or 2. A method of protecting from oxidative deterioration a polymer, normally subject to oxidative deterioration, said polymer having a carbon-hydrogen bond, comprising mixing with the said polymer, in an amount effective to protect said polymer against oxidative deterioration, an antioxidant as in claim 1.