| 摘要 |
Elastomers which have excellent stability to prevent oxidative, thermal, dynamic, light-induced and/or ozone-induced degradation comprise, as stabilizers, at least one compound of the formula (I): [R-S(=O)m-CH2-CH(OH)-CH2]n-N(R<1>)2-n-R<2>, in which R is C4-C20alkyl, hydroxyl-substituted C4-C20alkyl; phenyl, benzyl, alpha-methylbenzyl, alpha,alpha-dimethylbenzyl, cyclohexyl or -(CH2)qCOOR<3>, and, if m is 0, R may additionally be (a); and, if n is 1 and R<4 >is hydrogen, R may additionally be R<2>-R<1>N-CH2-CH(OH)-CH2-S(=O)m-(CH2)x- or R<2>-R<1>N-CH2-CH(OH)-CH2-S(=O)m-CH2-CH2-(OCH2-CH2)y-, R<1 >is hydrogen, cyclohexyl or C3-C12alkyl, R<2 >is (b), R<3 >is C1-C18alkyl, R<4 >is hydrogen or -CH2-CH(OH)-CH2-S(=O)m-R, X is C1-C8alkyl, Y is C1-C8alkyl, m is 0 or 1, n is 1 or 2, q is 1 or 2, x is from 2 to 6, and y is 1 or 2. The compounds of the formula (I) are also suitable as stabilizes for elastomers to prevent contact discoloration of substrates coming into contact with elastomers.
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