C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 15/30 (2006.01) C08K 3/22 (2006.01) C08K 5/34 (2006.01) C08K 5/3435 (2006.01) C08K 5/3492 (2006.01) C08K 5/544 (2006.01)
Patent
CA 2210049
A stabilizer mixture containing A) either (A1) at least one compound of the formula (see formula 1) in which R1 is for example C1-C10alkyl; R2 is C3-C10alkytene; R3 is for example hydrogen or C1-C8alkyl; and n, is a number from 2 to 50; or (A2) a product obtainable by reacting a product - obtained by reaction of a polyamine of the formula (see formula 2) in which n2' , n2" and n2 '" are a number from 2 to 12 with cyanuric chloride - with a compound of the formula (see formula 3) wherein R4 is for example hydrogen or C1-C12alkyl; and R6 is as defined for R3; B) magnesium oxide, magnesium hydroxide, zinc oxide, zinc hydroxide or an organic salt of zinc or magnesium, or a hydrotalcite; and C) either (C1) an UV absorber or (C2) a pigment or (C3) an UV absorber and a pigment; with the proviso that, when component A) is a product obtainable by reacting a product - obtained by reaction of the above polyamine with cyanuric chloride - with the above 2,2,6,6-tetramethyl-4-piperidylamine, component B) is magnesium oxide, magnesium hydroxide or an organic salt of zinc or magnesium, or a hydrotalcite. This stabilizer mixture is useful for stabilizing polyolefins against light- induced degradation.
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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