Synergistic stabilizer mixture
A synergistic stabilizer mixture comprising a component a) and, for example, a component b), where component a) is at least one compound of the formula I in which R 1 is hydrogen or methyl, R 2 is a direct bond or C 1 -C 10 alkylene, and n 1 is a number from 2 to 50; component b) is at least one compound of the formulae IIa and IIb in which n 2 and n 2 * are a number from 2 to 50.
1. A stabilizer mixture comprising a component a) and a component e) in a weight ratio of 1:1 wherein
component a) is a product of the formula
and
component e) is a product having the structural formula
wherein R is
and wherein x is a number such that the highest number average molecular weight (osmotic method) is 3200 and the lowest number average molecular weight (osmotic method) is 2900.
2. A stabilizer mixture comprising a component a) and a component e) wherein component a) is a product of the formula
and
component e) is a product having the structural formula
wherein R is
and wherein x is a number such that the highest number average molecular weight (osmotic method) is 3200 and the lowest number average molecular weight (osmotic method) is 2900
and the weight ratio between component a) and component e) is 5:1 to 1:5.
3. A composition comprising an organic material which is sensitive to oxidative, thermal or light-induced degradation and a stabilizer mixture according to claim 2 .
4. A composition according to claim 3 , in which the organic material is a polyolefin.
5. A composition according to claim 3 , in which the organic material is polyethylene, polypropylene or a copolymer of polyethylene or polypropylene.
6. A process for stabilizing an organic material which is sensitive to oxidative, thermal or light-induced degradation, which comprises incorporating a stabilizer mixture according to claim 2 into the organic material.
7. A composition comprising an organic material which is sensitive to oxidative, thermal or light-induced degradation and a stabilizer mixture according to claim 2 .
8. A composition according to claim 7 , in which the organic material is a polyolefin.
9. A composition according to claim 7 , in which the organic material is polyethylene, polypropylene or a copolymer of polyethylene or polypropylene.
10. A process for stabilizing an organic material which is sensitive to oxidative, thermal or light-induced degradation, which comprises incorporating a stabilizer mixture according to claim 2 into the organic material.