Sterically hindered amine light stabilizers with a mixed functionalization

Patent metadata

Field	Value
Publication number	US-9550941-B2
Application number	US-201113879114-A
Country	US
Kind code	B2
Filing date	Oct 17, 2011
Priority date	Oct 20, 2010
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

A compound of the formula (I), wherein one or two radicals of the radicals R 1 are independently of one another C 1 -C 20 alkyloxy or C 3 -C 12 cycloalkyloxy and the remaining radicals R 1 are independently of one another hydrogen, C 1 -C 20 alkyl or C 3 -C 12 cycloalkyl; the radicals R 0 and R 2 are independently of one another hydrogen, C 1 -C 20 alkyl, C 3 -C 12 cycloalkyl or a group of the formula (II-a) with R 3 being hydrogen, C 1 -C 20 alkyl, C 3 -C 12 cycloalkyl, C 1 -C 20 alkyloxy or C 3 -C 12 cycloalkyloxy; Y is C 2 -C 12 alkylene; m is 0 or 1; n is 1, 2 or 3; when n is 1, X is hydrogen, C 1 -C 20 alkyl, C 3 -C 12 cycloalkyl or a group of the formula (II-a); when n is 2, X is C 2 -C 12 alkylene; when n is 3, X is a group N(Z—) 3 with Z being C 2 -C 12 alkyl.

First claim

The invention claimed is:

1. A compound of formula (I):

wherein:
one or two radicals R 1 are independently of one another propoxy or cyclohexyloxy and the remaining radicals R 1 are independently of one another a C 3 -C 6 alkyl;
the radicals R 0 are independently of one another a C 1 -C 4 alkyl;
m is 0;
n is 1 or 2;
when n is 1, X is a C 1 -C 4 alkyl; and
when n is 2, X is a C 2 -C 12 alkylene.

2. A composition, comprising:
A) an polyolefin homopolymer or copolymer; and
B) the compound of claim 1 .

3. A method for stabilizing a polyolefin homopolymer or copolymer against degradation induced by light, heat or oxidation, the method comprising incorporating into the polyolefin homopolymer or copolymer at least one compound of claim 1 .

Assignees

• Menozzi Edoardo
• Schoning Kai-Uwe
• Basf Se

Inventors

• Menozzi Edoardo
• Schoning Kai-Uwe

Classifications

• C07D401/14 Primary

  containing three or more hetero rings · CPC title

• C08K5/34926 Primary

  also containing heterocyclic groups other than triazine groups · CPC title

• C09K15/30 Primary

  containing heterocyclic ring with at least one nitrogen atom as ring member · CPC title

• C08K3/013

  Fillers, pigments or reinforcing additives · CPC title

• C08K3/0033

  Chemistry & Metallurgy · mapped topic