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CN-114786946-B - Light stabilizer mixture

CN114786946BCN 114786946 BCN114786946 BCN 114786946BCN-114786946-B

Abstract

A stabilizer mixture comprising a hindered amine light stabilizer, a triazine UV absorber, and a benzophenone UV absorber.

Inventors

  • T. Willand
  • LIPS GERARD
  • S. Vilnov
  • M. Vitali

Assignees

  • 巴斯夫欧洲公司
  • 巴斯夫欧洲公司

Dates

Publication Date
20260421
Application Date
20210205
Priority Date
20200210

Claims (15)

  1. 1. A stabilizer mixture comprising components (a), (b) and (c), wherein: component (a) is at least one compound selected from the group consisting of formulas (A-0), (A-1), (A-2), (A-3) and (A-4): (A-0) Wherein 1 or 2 groups A 2 are hydrogen and the remaining groups A 2 are propoxy, (A-1) (A-2) (A-3) Wherein a is a number from 1 to 20; (A-4) Wherein a is a number from 1 to 20; component (B) is at least one compound selected from the group consisting of formulas (B-I) and (B-II): (B-I) Wherein the method comprises the steps of E 2 、E 3 、E 4 and E 5 are, independently of one another, hydrogen, C 1 -C 18 alkyl, phenyl or phenyl substituted by 1, 2 or 3C 1 -C 4 alkyl; n is 1 or 2, and the number of the N is 1 or 2, When n is 1, E 1 is C 1 -C 18 alkyl or C 2 -C 18 hydroxyalkyl interrupted by oxygen, an When n is 2, E 1 is a bridging group of the formula-CH 2 CH 2 -O-C(O)-(CH 2 ) 10 -C(O)-O-CH 2 CH 2 -, (B-II) Wherein Q 1 、Q 2 、Q 3 and Q 4 are independently of each other hydrogen, C 1 -C 18 alkyl, C 1- C 18 alkyl substituted by hydroxy or C 2 -C 18 alkyl interrupted by oxygen or C 2 -C 18 hydroxyalkyl, and T 1 、T 2 and T 3 are independently of each other hydrogen or C 1 -C 18 alkyl; component (C) is a compound of formula (C): (C) And wherein the weight ratio of components (b) to (c) is from 1:50 to 50:1.
  2. 2. The stabilizer mixture according to claim 1, wherein E 2 、E 3 、E 4 and E 5 are each independently of the other hydrogen, C 1 -C 4 alkyl or phenyl, Q 1 、Q 2 、Q 3 and Q 4 are independently of one another hydrogen or C 1 -C 10 alkyl, and T 1 、T 2 and T 3 are independently of one another hydrogen or C 1 -C 4 alkyl.
  3. 3. The stabilizer mixture according to claim 1, wherein component (B) is at least one compound selected from the group consisting of the formulae (B-1), (B-2) and (B-3): (B-1) (B-2) (B-3)。
  4. 4. The stabilizer mixture according to claim 2, wherein component (B) is at least one compound selected from the group consisting of the formulae (B-1), (B-2) and (B-3): (B-1) (B-2) (B-3)。
  5. 5. The stabilizer mixture according to claim 1 to 4, additionally comprising component (D), which is at least one compound selected from the group consisting of the formulae (D-1) and (D-2): (D-1) (D-2) wherein b is a number from 2 to 20.
  6. 6. A composition comprising: (I) An organic material subject to degradation by light, heat, oxidation or agrochemical compounds, and (II) a stabilizer mixture as defined in claim 1.
  7. 7. The composition according to claim 6, wherein the organic material is a polyolefin.
  8. 8. The composition according to claim 6 or 7, additionally comprising further additives selected from the group consisting of antioxidants, slip agents, antiblocking agents, thermal fillers, pigments, water and smoke repellents.
  9. 9. An article made from the composition of claim 6.
  10. 10. The article according to claim 9 which is a single layer film or a 3-7 layer multilayer film.
  11. 11. The article according to claim 9, which is a multilayer film comprising in at least one layer a compound of formula (a-0), (a-1), (a-2), (a-3) or (a-4) as defined in claim 1 and in another layer a compound of formula (B-I) or (B-II) as defined in claim 1.
  12. 12. The article of claim 11 wherein said multilayer film is a polyolefin film.
  13. 13. The article of claim 9 which is a greenhouse film covering.
  14. 14. The article of claim 13, wherein the greenhouse film covering is contacted with an agrochemical compound.
  15. 15. A method of stabilizing an organic material against degradation caused by the action of light, heat, oxidation or agrochemical compounds, which method comprises incorporating into the organic material a stabilizer mixture as defined in claim 1.

Description

Light stabilizer mixture The present invention relates to a stabilizer mixture comprising a hindered amine light stabilizer, a triazine UV absorber and a benzophenone UV absorber, a composition comprising an organic material, preferably an organic polymer, subject to degradation caused by the action of light, heat, oxidation or agrochemical compounds, an article, preferably a greenhouse film covering, made from said composition, and a method of stabilizing the above organic material. In more detail, the present invention relates to a stabilizer mixture comprising components (a), (b) and (c), wherein: Component (a) is at least one compound of formula (A), Wherein A 1 is C 2-C18 alkylene, C 5-C7 cycloalkylene or C 1-C4 alkylene bis (C 5-C7 cycloalkylene), The radicals A 2 are each independently of the other hydrogen, C 1-C12 alkyl, C 1-C12 alkoxy, C 5-C12 cycloalkyl or C 5-C12 cycloalkoxy, A 3 and A 4 are each independently of the other hydrogen, C 1-C12 alkyl, C 5-C12 cycloalkyl or a group of the formula (a-1), Or the groups A 3 and A 4 together with the nitrogen atom to which they are bound form a 5-to 10-membered heterocyclic ring, and A is a number from 1 to 20 and the repeating units are the same or different; component (B) is at least one compound selected from the group consisting of formulas (B-I) and (B-II): Wherein the method comprises the steps of E 2,E3,E4 and E 5 are, independently of one another, hydrogen, C 1-C18 alkyl, phenyl or phenyl substituted by 1, 2 or 3C 1-C4 alkyl; n is 1 or 2, and the number of the N is 1 or 2, When n is 1, E 1 is C 1-C18 alkyl or C 2-C18 hydroxyalkyl interrupted by oxygen, an When n is 2, E 1 is a bridging group of the formula-CH 2CH2-O-C(O)-(CH2)10-C(O)-O-CH2CH2 -, Wherein Q 1、Q2、Q3 and Q 4 are each, independently of one another, hydrogen, C 1-C18 alkyl, C 1-C18 alkyl substituted by hydroxy or C 2-C18 alkyl interrupted by oxygen or C 2-C18 hydroxyalkyl, and T 1、T2 and T 3 are each, independently of one another, hydrogen or C 1-C18 alkyl, and Component (C) is a compound of formula (C): And wherein the weight ratio of components (b) to (c) is from 1:50 to 50:1. Examples of alkyl having up to 18 carbon atoms are methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, 2-ethylbutyl, n-pentyl, isopentyl, 1-methylpentyl, 1, 3-dimethylbutyl, n-hexyl, 1-methylhexyl, n-heptyl, isoheptyl, 1, 3-tetramethylbutyl 1-methylheptyl, 3-methylheptyl, n-octyl, 2-ethylhexyl, 1, 3-trimethylhexyl, 1, 3-tetramethylpentyl, nonyl, decyl, undecyl 1-methylundecyl, dodecyl, 1,3, 5-hexamethylhexyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl. Examples of C 2-C18 hydroxyalkyl groups interrupted by oxygen are groups of the formula ：-CH2-CH(OH)-CH2-O-CH2-CH(C2H5)-(CH2)3-CH3. Examples of C 1-C12 alkoxy are methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, pentoxy, isopentoxy, hexoxy, heptoxy, octoxy and decyloxy. C 1-C8 alkoxy is preferred, in particular propoxy. Examples of C 5-C12 cycloalkyl are cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl and cyclododecyl. Examples of C 5-C12 cycloalkoxy are cyclopentyloxy, cyclohexyloxy, cycloheptyloxy, cyclooctyloxy, cyclodecyloxy and cyclododecyloxy. Cyclohexyloxy is preferred. A preferred example of phenyl substituted with 1, 2 or 3C 1-C4 alkyl groups is 2, 4-dimethylphenyl. Examples of C 2-C18 alkylene are ethylene, propylene, trimethylene, tetramethylene, pentamethylene, 2-dimethyltrimethylene and hexamethylene. An example of a C 5-C7 cycloalkylene is cyclohexylene. An example of a C 1-C4 alkylene bis (C 5-C7 cycloalkylene) is methylenedicyclohexyl. When the radicals A 3 and A 4 together with the nitrogen atom to which they are bound form a 5-to 10-membered heterocyclic ring, the ring is, for example, 1-pyrrolidinyl, piperidino, 1-piperazinyl, 4-methyl-1-piperazinyl, 1-hexahydroazaA group, 5,5,7-trimethyl-1-homopiperazinyl or 4,5,5,7-tetramethyl-1-homopiperazinyl. In the compounds of the formula (A), the end groups bound to the diamino groups are, for example, hydrogen or a formulaThe end groups bound to the triazine groups are, for example, of the formulaThe radicals or formulae (la)Is a group of (2). A stabilizer mixture wherein: A 1 is C 2-C18 alkylene, C 5-C7 cycloalkylene or C 1-C4 alkylene di (C 5-C7 cycloalkylene), the radicals A 2 independently of one another are hydrogen, C 1-C12 alkyl, C 1-C12 alkoxy, C 5-C12 cycloalkyl or C 5-C12 cycloalkoxy, A 3 and A 4 are each independently of the other hydrogen, C 1-C12 alkyl, C 5-C12 cycloalkyl or a radical of the formula (a-1), and a is a number from 1 to 20, and the repeating units are identical or different. Preference is given to stabilizer mixtures in which: A 1 is C 2-C8 alkylene or cyclohexylene, the radicals A 2 independently of one another are hydrogen, C 1-C8 alkyl, C 1-C12 alkoxy, cyclohexyl or cyclohexyloxy, A 3 and A 4 independently of one another are hydrogen, C 1-C8 alkyl or a radical of the formula (a-1), and A is a number from 1 to 10,