| abstract |
New stabilizers of the formula (I) <IMAGE> (I) in which m+n is a number from 1 to 100 and n varies from zero to 90% of the sum of m+n, A is -O- or <IMAGE> where R6 is e.g. hydrogen or C1-C18alkyl, R1 and R4 which can be identical or different are C1-C8alkyl, phenyl, C1-C8alkoxy, OH, ONa or OK, R2 is C2-C12alkylene or also a direct bond if A is -O- and R1 and R4 are C1-C8alkyl or phenyl, R3 is C1-C18alkyl, C5-C12cycloalkyl, C2-C18alkenyl, C5-C12cycloalkenyl, C7-C12aralkyl, a saturated or unsaturated radical of a bicyclic or tricyclic C7-C12hydrocarbon or C6-C10aryl which is unsubstituted or substituted by C1-C8alkyl, R5 is hydrogen, C1-C18alkyl, C5-C12cycloalkyl or phenyl, X1 is as defined for R1 or is a group (R7)3SiO- with R7 being C1-C8alkyl, X2 is e.g. hydrogen, Na, K, C1-C8alkyl or a group (R7)3Si-, and, if m+n is a number from 3 to 10, X1 and X2 together can also be a direct bond. |