Modified heterophasic polyolefin composition

Patent metadata

Field	Value
Publication number	US-9879134-B2
Application number	US-201615062004-A
Country	US
Kind code	B2
Filing date	Mar 4, 2016
Priority date	Mar 5, 2015
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A heterophasic polymer composition comprises a propylene polymer phase, an ethylene polymer phase, and a compatibilizing agent. The compatibilizing agent comprises (i) at least one tertiary carbon-hydrogen bond having a bond-dissociation energy of about 380 kJ/mol or less and (ii) at least one acyclic carbon-carbon double bond. A method of making a heterophasic polyolefin polymer composition comprises the steps of (a) providing a propylene polymer phase and an ethylene polymer phase, (b) providing a compatibilizing agent, and (c) mixing the propylene polymer phase, the ethylene polymer phase and the compatibilizing agent, in the presence of free carbon radicals. The compatibilizing agent reacts with propylene polymers and ethylene polymers thereby bonding propylene polymers to ethylene polymers.

First claim

What is claimed is:

1. A heterophasic polymer composition comprising:
(a) a propylene polymer phase comprising propylene polymers selected from the group consisting of polypropylene homopolymers and copolymers of propylene and up to 50 wt. % of one or more comonomers selected from the group consisting of ethylene and C 4 -C 10 α-olefin monomers;
(b) an ethylene polymer phase comprising ethylene polymers selected from the group consisting of ethylene homopolymers and copolymers of ethylene and one or more C 3 -C 10 α-olefin monomers; and
(c) a compatibilizing agent, the compatibilizing agent comprising (i) at least one tertiary carbon-hydrogen bond having a bond-dissociation energy of about 380 kJ/mol or less and (ii) at least one acyclic carbon-carbon double bond.

2. The heterophasic polymer composition of claim 1 , wherein the acyclic carbon-carbon double bond has at least two hydrogen atoms bonded to the carbon atoms in the acyclic carbon-carbon double bond.

3. The heterophasic polymer composition of claim 1 , wherein the compatibilizing agent conforms to the structure of Formula (I) below

where R 1 , R 2 , and R 3 are independently selected from the group consisting of aryl groups, substituted aryl groups, heteroaryl groups, substituted heteroaryl groups, electron withdrawing groups, and groups conforming to the structure of Formula (V), Formula (VI), Formula (VII), or Formula (VIII) below

where X 1 is selected from the group consisting of oxygen and —N(H)— and R 5 is selected from the group consisting of alkenyl groups, substituted alkenyl groups, substituted aryl groups, and substituted heteroaryl groups, provided the substituted aryl groups and substituted heteroaryl groups comprise at least one alkenyl group or substituted alkenyl group,

where R 6 is selected from the group consisting of alkanediyl groups and substituted alkanediyl groups,

where X 3 is selected from the group consisting of oxygen, —N(H)—, and —N(R 7 )—, R 7 is selected from the group consisting of alkenyl groups, substituted alkenyl groups, substituted aryl groups, and substituted heteroaryl groups, provided the substituted aryl groups and substituted heteroaryl groups comprise at least one alkenyl group or substituted alkenyl group;

where R 8 is selected from the group consisting of alkanediyl groups;
provided: (i) when two or more of R 1 , R 2 , and R 3 are aromatic groups, two of the groups can be fused by a linking element selected from the group consisting of a direct bond, an oxygen atom, and a sulfur atom; (ii) at least one of R 1 , R 2 , and R 3 is selected from the group consisting of aryl groups, substituted aryl groups, heteroaryl groups, and substituted heteroaryl groups; and (iii) at least one of R 1 , R 2 , and R 3 comprises at least one acyclic carbon-carbon double bond.

4. The heterophasic polymer composition of claim 3 , wherein the compatibilizing agent conforms to the structure of Formula (X) below

where R 10 , R 11 , and R 12 are independently selected from the group consisting of hydrogen, halogens, alkenyl groups, substituted alkenyl groups, groups conforming to the structure of Formula (V), and groups conforming to the structure —O—R 15 where R 15 is selected from the group consisting of alkenyl groups and substituted alkenyl groups, provided at least one of R 10 , R 11 , and R 12 comprises at least one acyclic carbon-carbon double bond.

5. The heterophasic polymer composition of claim 3 , wherein the compatibilizing agent conforms to the structure of Formula (XL) below

where R 41 is selected from the group consisting of groups conforming to the structure of Formula (V) or Formula (VII).

6. The heterophasic polymer composition of claim 5 , wherein R 41 is a group conforming to the structure of Formula (VII), X 3 is —N(H)—, and R 7 is a substituted aryl group.

7. The heterophasic polymer composition of claim 6 , wherein R 7 is a 4-ethenylphenyl group.

8. The heterophasic polymer composition of claim 5 , wherein R 41 is a group conforming to the structure of Formula (V), X 1 is —N(H)—, and R 5 is a substituted alkenyl group.

9. The heterophasic polymer composition of claim 8 , wherein R 5 is a 2-phenylethenyl group.

10. The heterophasic polymer composition of claim 3 , wherein the compatibilizing agent conforms to the structure of Formula (L) below

where R 51 is selected from the group consisting of a direct bond and oxygen, and R 55 is selected from the group consisting of substituted aryl groups, groups conforming to the structure of Formula (V), and groups conforming to the structure of Formula (VI).

11. The heterophasic polymer composition of claim 10 , wherein R 51 is a direct bond and R 55 is a 4-ethenylphenyl group.

12. The heterophasic polymer composition of claim 10 , wherein R 51 is an oxygen and R 55 is a 4-ethenylphenyl group.

13. The heterophasic polymer composition of claim 10 , wherein R 51 is a direct bond, R 55 is a group conforming to the structure of Formula (V), X 1 is an oxygen, and R 5 is a 1-methylethenyl group.

14. The heterophasic polymer composition of claim 10 , wherein R 51 is a direct bond, R 55 is a group conforming to the structure of Formula (VIII), R 8 is a methanediyl group, X 3 is —N(H)—, and R 7 is a 4-ethenylphenyl group.

15. The heterophasic polymer composition of claim 3 , wherein R 1 is a cyano group, R 2 is a phenyl group, and R 3 is a 4-ethenylphenyl group.

16. The heterophasic polymer composition of claim 1 , wherein the compatibilizing agent conforms to the structure of Formula (XX)

where X 20 is selected from the group consisting of an oxygen and —N(H)—, R 20 and R 21 are independently selected from the group consisting of hydrogen, C 1 -C 4 alkyl groups, and groups conforming to the structure of Formula (V) below

where X 1 is selected from the group consisting of oxygen and —N(H)— and R 5 is selected from the group consisting of alkenyl groups, substituted alkenyl groups, substituted aryl groups, and substituted heteroaryl groups, provided the substituted aryl groups and substituted heteroaryl groups comprise at least one alkenyl group or substituted alkenyl group; R 22 is selected from the group consisting of aryl groups, substituted aryl groups, heteroaryl groups, and substituted heteroaryl groups; provided at least one of R 20 , R 21 , and R 22 comprises at least one acyclic carbon-carbon double bond.

17. The heterophasic polymer composition of claim 1 , wherein the compatibilizin

Assignees

• Milliken & Co

Inventors

• Peterson Joseph J
• Wang Daike
• Sprinkle Jason D
• Trenor Scott R
• Datta Suchitra
• Sobczak Adam J

Classifications

• C08L23/36 Primary

  by reaction with nitrogen-containing compounds, e.g. by nitration · CPC title

• C08L23/10

  Homopolymers or copolymers of propene · CPC title

• C08L2207/02

  Heterophasic composition · CPC title

• C08L23/28

  by reaction with halogens or halogen-containing compounds (C08L23/32 takes precedence) · CPC title

• C08K5/005

  Stabilisers against oxidation, heat, light, ozone · CPC title