Synergistic stabilizing mixture

摘要

A stabiliser mixt. is claimed which contains a component (a) and a component (b), (c), (d) or (e). Component (a) consists of cpd(s). of formula (I), where R1 = H or Me; R2 = direct bond or 1-10C alkylene; and n1 = 2-50. Component (b) comprises e.g. cpd(s). of formula (IIa), where n2 = 2-50. Component (c) comprises cpd(s). of formula (III), where R3, R7 = direct bond or -N(X1)-CO-X2-CO-N(X3)-; X1 and X3 = e.g. H, 1-8C alkyl, 5-12C cycloalkyl, Ph or 7-9C phenylalkyl; X2 = direct bond or 1-4C alkylene; R4 = H, 1-8C alkyl, O, -CH2CN, 3-6C alkenyl, 7-9C phenylalkyl (opt. ring-substd. with 1-4C alkyl) or 1-8C acyl, R5, R6, R9 and R10 = H, 1-30C alkyl, 5-12C cycloalkyl or Ph; R8 = e.g. H, 1-30C alkyl, 5-12C cycloalkyl, 7-9C phenylalkyl or Ph. Component (d) comprises cpd(s). of formula (V), where R11-R15 = direct bond or 1-10C alkylene; R16 = as for R4; and n4 = 1-50. Component (e) is a prod. obtd. by reacting the reaction prod. of a polyamine of formula H2N-(CH2)n5'-NH-(CH2)n5''-NH-(CH2)n5'''-NH2 (VIa) and cyanuric acid chloride with a cpd. of formula (VIb), where n5', n5" and n5'" = 2-12; R17 = H, 1-12C alkyl, 5-12C cycloalkyl, Ph or 7-9C phenylalkyl; and R18 = as for R4. Also claimed are: (i) a compsn. contg. an organic material which is sensitive to oxidative, thermal or light-induced degradation and a stabiliser mixt. as above; (ii) a process for stabilising such degradation-sensitive materials by incorporating the above stabiliser mixt.; and (iii) a further specific stabiliser mixt..