Light stabilized polyolefin films, tapes and monofilaments

Patent metadata

Field	Value
Publication number	US-10689495-B2
Application number	US-201615551943-A
Country	US
Kind code	B2
Filing date	Feb 16, 2016
Priority date	Feb 20, 2015
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A process for reducing water carry-over of a light stabilized polyolefin film, tape or filament which contains component (A) as light stabilizer and which is passed through a water bath during production, characterized in that the polyolefin film, tape or monofilament additionally comprises component (B) as light stabilizer, an example of component (A) is (I) wherein E 1 is (II), E 2 is (III) and a 3 is a number from 2 to 10, and an example of component (B) is (IV).

First claim

The invention claimed is:

1. A process for reducing water carry-over of a light stabilized polyolefin film, tape or monofilament, the process comprising:
adding a light stabilizer (A) and a light stabilizer (B) to a polyolefin to obtain a mixture; and
extruding the mixture while passing the mixture through a water bath to obtain the light stabilized polyolefin film, tape or monofilament,
wherein water carry-over of the obtained light stabilized polyolefin film, tape or monofilament is lower than water carry-over of a light stabilized polyolefin film, tape or monofilament including the light stabilizer (A) and not including the light stabilizer (B),
wherein the light stabilizer (A) is at least one compound selected from the group consisting of a compound of formula (A-I), a compound of (A-II) and a compound of formula (A-III),

wherein A 1 is hydrogen or C 1 -C 4 alkyl,
A 2 is a direct bond or C 1 -C 10 alkylene, and
a 1 is a number from 2 to 20;

wherein A 3 , A 4 and A 5 independently of one another are C 2 -C 18 alkylene,
A 6 , A 7 , A 8 , A 9 and A 10 independently of one another are hydrogen, C 1 -C 12 alkyl, C 5 -C 12 cycloalkyl or a group of formula (a-1),

wherein A 11 independently of one another are hydrogen, C 1 -C 12 alkyl or C 5 -C 12 cycloalkyl, and
a 2 is a number from 1 to 20;

wherein A 12 is C 2 -C 18 alkylene, C 5 -C 7 cycloalkylene or C 1 -C 4 alkylenedi(C 5 -C 7 cycloalkylene),
A 13 and A 14 independently of one another are hydrogen, C 1 -C 12 alkyl, C 5 -C 12 cycloalkyl or a group of formula (a-2),

wherein A 15 independently of one another are hydrogen, C 1 -C 12 alkyl or C 5 -C 12 cycloalkyl
or A 13 and A 14 , together with the nitrogen atom to which they are bonded, form a 5- to 10-membered heterocyclic ring,
and
a 3 is a number from 2 to 20; and
the light stabilizer (B) is at least one compound selected from the group consisting of a compound of formula (B-I), a compound of formula (B-II), a compound of formula (B-III) and a compound of formula (B-IV),

wherein R 1 is C 1 -C 18 alkyl, C 1 -C 18 hydroxyalkyl, cyclohexyl or hydroxycyclohexyl or R 1 is a group —C(C 6 H 5 )(H)CH 2 —OH and R 2 is C 1 -C 25 alkyl;

wherein R 3 is C 2 -C 18 alkylene, C 5 -C 7 cycloalkylene or C 1 -C 4 alkylenedi(C 5 -C 7 cycloalkylene),
R 4 independently of one another are C 1 -C 12 alkyl or C 5 -C 12 cycloalkyl,
R 5 and R 6 independently of one another are hydrogen, C 1 -C 12 alkyl, C 5 -C 12 cycloalkyl or a group of formula (b-2),

or R 5 and R 6 , together with the nitrogen atom to which they are bonded, form a 5- to 10-membered heterocyclic ring and
b 1 is a number from 1 to 20;

wherein R 8 , R 9 and R 10 independently of one another are C 2 -C 18 alkylene and R 7 independently of one another are a group of formula (b-3)

wherein R 11 and R 12 independently of one another are hydrogen, C 1 -C 12 alkyl, C 5 -C 12 cycloalkyl or a group of formula (b-4)

and R 13 independently of one another are C 1 -C 12 alkyl or C 5 -C 12 cycloalkyl;

wherein
R 5 is C 1 -C 25 alkyl,
n is a number from 1 to 10, and
W is a wax residue comprising between 50 and 1000 carbon atoms.

2. The process according to claim 1 , wherein
A 1 is hydrogen,
A 2 is C 2 -C 6 alkylene,
a 1 is a number from 2 to 10,
A 3 , A 4 and A 5 independently of one another are C 2 -C 6 alkylene,
A 6 , A 7 , A 8 , A 9 and A 10 independently of one another are C 1 -C 4 alkyl,
A 11 independently of one another are hydrogen or C 1 -C 4 alkyl,
a 2 is a number from 1 to 10,
A 12 is C 2 -C 6 alkylene,
A 13 and A 14 independently of one another are hydrogen, C 1 -C 4 alkyl, cyclohexyl or a group of the formula (a-2),
or A 13 and A 14 , together with the nitrogen atom to which they are bonded, form a morpholino group,
A 15 independently of one another are hydrogen or C 1 -C 4 alkyl,
a 3 is a number from 2 to 10,
R 1 is C 1 -C 11 alkyl or C 2 -C 6 hydroxyalkyl,
R 2 is C 10 -C 20 alkyl or a group of the formula (b-1),
R 3 is C 2 -C 6 alkylene,
R 4 independently of one another are C 1 -C 4 alkyl or cyclohexyl,
R 5 and R 6 independently of one another are hydrogen, C 1 -C 4 alkyl, cyclohexyl or a group of the formula (b-2),
or R 5 and R 6 , together with the nitrogen atom to which they are bonded, form a morpholino group,
b 1 is a number from 1 to 10,
R 8 , R 9 and R 10 independently of one another are C 2 -C 6 alkylene,
R 7 independently of one another are a group of the formula (b-3),
R 11 and R 12 independently of one another are C 1 -C 4 alkyl, and
R 13 independently of one another are C 1 -C 4 alkyl or cyclohexyl.

3. The process according to claim 1 , wherein
the compound of the formula (A-I) corresponds to a compound of formula (A-I-1)

wherein a 1 is a number from 2 to 10,
the compound of the formula (A-II) corresponds to a compound of formula (A-II-1) or (A-II-2),

wherein a 2 is a number from 1 to 10,

wherein a 2 is a number from 1 to 10,
the compound of the formula (A-III) corresponds to a compound of formula (A-III-1), (A-III-2), (A-III-3) or (A-III-4),

wherein a 3 is a number from 2 to 10,

wherein a 3 is a number from 2 to 10,

wherein A 15 is hydrogen or methyl and a 3 is a number from 2 to 10,

wherein a 3 is a number from 2 to 10;
the compound of the formula (B-I) corresponds to a compound of formula (B-I-1),

the compound of the formula (B-II) corresponds to a compound of formula (B-II-1),

Assignees

• Basf Se

Inventors

• Mueller Daniel
• Weyland Tania

Classifications

• D01F1/10

  Other agents for modifying properties · CPC title

• C08K5/34 Primary

  Heterocyclic compounds having nitrogen in the ring · CPC title

• C08J5/18 Primary

  Manufacture of films or sheets · CPC title

• B29C48/919

  using a bath, e.g. extruding into an open bath to coagulate or cool the material · CPC title

• B29C48/08 Primary

  flexible, e.g. films · CPC title