| 摘要 |
<p>A composition containing an organic material subject to oxidative, thermal or actinic degradation and at least one compound of formula (I), wherein p+q is a number from 2 to 100 and q varies from 0 to 50 % of the sum of p+q; m and n which are identical or different are zero or 1; R1, R2 and Y which are identical or different are for example C1-C18alkyl, C5-C12cycloalkyl unsubstituted or mono-, di- or tri-substituted by C1-C4alkyl; or phenyl unsubstituted or mono-, di- or tri-substituted by C1-C4 alkyl, C1-C4alkoxy and/or C2-C20alkanoyl; and, when m is 1 and n is zero, Y is additionally hydrogen; X1 and X2 which are identical or different are for example C2-C12alkylene, A and B are for example hydrogen, each of the radicals R1, R2, X1, X2 and Y as well as the variables m and n have the same or different definitions in the recurring structural units contained in the formula (I) and, when the compounds of the formula (I) are copolymeric, they have a random, alternate or block distribution of the individual structural units. The compounds of the formula (I) are particularly suitable as process stabilizers. Several compounds of the formula (I) are novel.</p> |
