Oligomeric light stabilizers with a specific functionalization

Patent metadata

Field	Value
Publication number	US-9556326-B2
Application number	US-201113879107-A
Country	US
Kind code	B2
Filing date	Oct 17, 2011
Priority date	Oct 20, 2010
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

A compound of the formula (I) wherein m and n are independently of one another a number from 1 to 50; the ratio of m/n is 1:10 to 10:1, the recurring units X can have the same definition or different definitions, the recurring units Y can have the same definition or different definitions and the recurring units X and Y can have a random, alternating or block distribution; the recurring unit X is a group of the formula (I-a) and the recurring unit Y is a group of the formula (I-b) the radicals R 1 independently of one another are C 1 -C 12 alkyl or C 3 -C 12 cycloalkyl; the radicals R 2 and R 4 are independently of one another C 12 -C 30 alkyl; the radicals R3 are independently of one another hydrogen, C 1 -C 12 alkyl or C 3 -C 12 cycloalkyl.

First claim

The invention claimed is:

1. A compound of formula (I):

wherein:
m and n are independently of one another a number from 1 to 50;
the ratio of m/n is 1:10 to 10:1;
the recurring units X can have the same definition or different definitions;
the recurring units Y can have the same definition or different definitions; and
the recurring units X and Y can have a random, alternating or block distribution;
the recurring unit X is a group of formula (I-a):

the recurring unit Y is a group of formula (1-b)

the radicals R 1 independently of one another are C 1 -C 12 alkyl or C 3 -C 12 cycloalkyl;
the radicals R 2 and R 4 are independently of one another C 12 -C 30 alkyl; and
the radicals R 3 are independently of one another hydrogen, C 1 -C 12 alkyl, or C 3 -C 12 cycloalkyl.

2. The compound according to claim 1 , wherein R 1 is C 1 -C 8 alkyl or cyclohexyl, R 2 and R 4 are independently of one another C 15 -C 24 alkyl and R 3 is hydrogen, C 1 -C 4 alkyl, or cyclohexyl.

3. The compound according to claim 1 , wherein R 1 is propyl, R 2 and R 4 are independently of one another C 16 -C 22 alkyl, and R 3 is hydrogen or methyl.

4. The compound according to claim 1 , which corresponds to

wherein the two different recurring units have a random distribution and the ratio of m/n is 1:3 to 3:1.

5. The compound according to claim 1 , which corresponds to formula

wherein the two different recurring units have a random distribution and the ratio of m/n is 1:3 to 3:1.

6. A composition comprising
A) an organic material subject to degradation induced by light, heat, or oxidation, and
B) the compound of the formula (I) as defined in claim 1 .

7. The composition according to claim 6 , further comprising one, two or more components selected from the group consisting of:
(C-1) a filler or reinforcing agent,
(C-11) a pigment,
(C-111) a further light stabilizer,
(C-IV) a processing additive,
(C-V) an antioxidant, and
(C-VI) a terpene derivative.

8. The composition according to claim 6 wherein component (A) is a thermoplastic natural or synthetic polymer.

9. The composition according to claim 6 wherein component (A) is a polyolefin homo- or copolymer, a starch modified polyolefin or a starch based polymer composite.

10. The composition according to claim 6 wherein component (a) is a polyethylene, a polypropylene, a polyethylene copolymer, or a polypropylene copolymer.

11. A shaped article made of the composition according to claim 6 .

12. The shaped article according to claim 11 , which is a film, fibre, profile, pipe, bottle, tank, or container.

13. The shaped article according to claim 11 , which is a mulch film.

14. A method for stabilizing an organic material against degradation induced by light, heat or oxidation, which comprises incorporating into the organic material at least one compound of the formula (I) as defined in claim 1 .

15. A compound of formula (II)

wherein z is a number from 1 to 50.

Assignees

• Menozzi Edoardo
• Schoning Kai-Uwe
• Basf Se

Inventors

• Menozzi Edoardo
• Schoning Kai-Uwe

Classifications

• C08L2203/12

  used for fibers · CPC title

• C08L2203/16

  used for films · CPC title

• Y10T428/139

  Open-ended, self-supporting conduit, cylinder, or tube-type article · CPC title

• C08F8/32

  by reaction with amines · CPC title

• Y10T428/1397

  Single layer [continuous layer] · CPC title