Synergistic mixture of 2,4-dimethyl-6-sec-alkylphenol and sterically protected phenol and its use for organic material stabilization

摘要

A synergistic mixture is described, comprising a) at least one compound of formula (I) wherein R1 is methyl or ethyl, and R2 is C10-C30 alkyl and b) at least one compound of formula (II) wherein n is 1, 2 or 4, X1 is terc-butyl, X2 is C1-C4 alkyl, X3, where n=1, is C1-C20 alkyl, or a -A1-COO-A2 or A1-COONH-A2 group, wherein A1 is C1-C4 alkylene and A2 is C1-C20 alkyl, C4-C20-alkyl which is interrupted by -O-, X3, where n=2, is a -E1-COO-E2-OOC- E3- or -E1-CONH-E2-NHCO-E3- group, wherein E1 and E3 are C1-C4-alkylene and E2 is C2-C20 alkylene, C4-C20 alkylene which is interrupted by -O- or -S-, X3 , where n=4, is (-G1-COO)4-G2, wherein G1 is direct bond or C1-C4 alkylene and G2 is C5-C10-alkanetetrayl. Also is described a compound comprising a synergistic mixture and using of them.