C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/13 (2006.01) C08K 5/134 (2006.01) C09K 15/08 (2006.01)
Patent
CA 2196266
A synergistic mixture is described, comprising a) at least one compound of formula I Image (I), wherein R1 is methyl or ethyl, and R2 is C10-C30alkyl, and b) at least one compound of formula II Image (II), wherein n is 1, 2 or 4, X1 is tert-butyl, X2 is C1-C4alkyl, X3, where n = 1, is C1- C20alkyl, a triazinylamino group which is substituted at the triazine ring by C1-C10alkylthio, or a -A1- COO-A2 or -A1-CONH-A2 group, wherein A1 is either a direct bond or C1-C4alkylene, and A2 is C1-C20alkyl; C4- C20alkyl which is interrupted by -O-; C5C12cycloalkyl, phenyl; phenyl which is substituted by - OH and/or C1- C4alkyl; C7-C9phenylalkyl; C7-C9phenylalkyl which is substituted at the phenyl moiety by -OH and/or C7-C9alkyl, X3, where n = 2, is a -E1-COO-E2-OOC-E3- or -E1-CONH-E2- NHCO-E3- group, wherein E1 and E3 are each independently of the other a direct bond or C1-C4- alkylene, E2 is C2-C20alkylene; C4-C20alkylene which is interrupted by -O- or - S-, a Image C5-C7cycloalkylene, C1-C4alkyl-substituted C5-C7cycloalkylene; phenylene or a Image or X3 where n = 4, is [-G1-COO]4-G2, wherein G1 is direct bond or C1- C4alkylene, and G2 is C5-C10alkanetetrayl, the use of this mixture as well as selected organic polymers, such as an acrylonitrile/butadiene/styrene terpolymer (ABS) or a styrene/acrylonitrile copolymer (SAN), which are stabilised with the novel mixture against thermal, oxidative and/or actinic degradation.
Gilg Bernard
Stinsky Kurt
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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