Polyglycol bis-[3-(7-tert-butyl-2-oxo-3-phenyl-3H-benzofuran-5-yl-)propanoyl] derivatives as stabilizers of organic material

Patent metadata

Field	Value
Publication number	US-9328218-B2
Application number	US-201314410979-A
Country	US
Kind code	B2
Filing date	Jul 9, 2013
Priority date	Jul 13, 2012
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

The invention relates to a compound of the formula (I-1)

wherein

n is 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25, R 1 , R 2 , R 3 , R 4 , R 5 , R′ 1 , R′ 2 , R′ 3 , R′ 4 and R′ 5 are each independently from each other H or C 1 -C 8 -alkyl. Compounds of the formula (I-1) or stabilizer mixtures containing compounds of the formula (I-1) are especially used for stabilization of polymers against degradation by oxidation, heat or light.

First claim

The invention claimed is:

1. A compound of the formula (I-1)

wherein
n is 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25,
R 1 , R 2 , R 3 , R 4 , R 5 , R′ 1 , R′ 2 , R′ 3 , R′ 4 and R′ 5 are each independently selected from H or C 1 -C 8 -alkyl.

2. The compound according to claim 1 , wherein a substituent R of R 1 to R 5 is different from a substituent R′ of R′ 1 to R′ 5 .

3. The compound according to claim 1 , wherein R 1 or R 5 is H, and R′ 1 or R′ 5 is H.

4. The compound according to claim 1 , wherein n is 1 to 9, and R 1 , R 2 , R 3 , R 4 , R 5 , R′ 1 , R′ 2 , R′ 3 , R′ 4 and R′ 5 are each independently selected from H, C 1 -C 4 -alkyl or C 8 -alkyl.

5. A stabilizer mixture, comprising:
at least one compound of formula (I-1)

wherein n is an integer from 1 to 24,
R 1 , R 2 , R 3 , R 4 , R 5 , R′ 1 , R′ 2 , R′ 3 , R′ 4 and R′ 5 are each independently selected from H or C 1 -C 8 -alkyl; and
at least one compound of formula (II-1)

wherein n is an integer from 1 to 24; and
R 1 , R 2 , R 3 , R 4 , R 5 and R′ 1 , R′ 2 , R′ 3 , R′ 4 , R′ 5 are as defined in claim 1 .

6. A composition, which comprises
a) an organic material susceptible to oxidative, thermal or light-induced degradation; and
b) the compound of the formula (I-1) as defined in claim 1 .

7. The composition according to claim 6 , wherein the organic material is a polymer, which is semi-synthetic or synthetic.

8. The composition according to claim 6 , wherein component a) is a polymer, which is a polyolefin, a polyether polyol or a polyurethane.

9. The composition according to claim 6 , wherein component b) is present in an amount of 0.0001% to 10% based on the weight of component a).

10. The composition according to claim 6 , further comprising: c) an additive.

11. The composition according to claim 10 , wherein the additive is at least one selected from the group consisting of a phenolic antioxidant, a phosphite, a phosphonite, an acid scavenger, an aminic antioxidant and a flame retardant.

12. The composition according to claim 10 , wherein a weight ratio of component b) to component c) is from 4:1 to 1:20.

13. The composition according to claim 10 , which comprises two additives.

14. A process for protecting an organic material susceptible to oxidative, thermal or light-induced degradation, comprising incorporating or applying the compound of the formula (I-1) according to claim 1 into or onto the organic material.

Assignees

• Basf Se

Inventors

• Schoening Kai-Uwe
• Tartarini Cinzia
• Al-Akhdar Walid
• Berens Ulrich
• Rotzinger Bruno
• Dichtl Alexander

Classifications

• C07D307/83 Primary

  Oxygen atoms · CPC title

• C08K5/17

  Amines; Quaternary ammonium compounds · CPC title

• C08K5/5393

  Phosphonous compounds, e.g. R—P(OR')2 · CPC title

• C08K5/05

  Alcohols; Metal alcoholates · CPC title

• C08K5/1535 Primary

  Five-membered rings · CPC title