Modified polyolefin resin

Patent metadata

Field	Value
Publication number	US-11046844-B2
Application number	US-201716336939-A
Country	US
Kind code	B2
Filing date	Sep 26, 2017
Priority date	Sep 28, 2016
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

Provided is a modified polyolefin resin that is excellent in adhesion to nonpolar substrates such as a polyolefin substrate, and excellent in stability in an alcohol solvent. In the modified polyolefin resin, the following polymer (A) is grafted on the following resin (B).
Polymer (A): a polymer including at least one constitutional unit selected from the group consisting of a constitutional unit derived from an α,β-unsaturated carboxylic acid and a constitutional unit derived from a derivative of an α,β-unsaturated carboxylic acid, and having a hydroxyl value in a range of 10 mgKOH/g or larger and 200 mgKOH/g or smaller.
Resin (B): a polyolefin resin or a modified product thereof.

First claim

The invention claimed is:

1. A resin dispersion, comprising:
a dispersing medium comprising 50% by weight or higher of alcohols; and
a modified polyolefin resin, comprising:
a polymer (A), which is a polymer comprising constitutional unit selected from the group consisting of a constitutional unit derived from an α,β-unsaturated carboxylic acid and a constitutional unit derived from a derivative of an α,α-unsaturated carboxylic acid, and having a hydroxyl value in a range of 10 mgKOH/g or larger and 200 mgKOH/g or smaller, and
a resin (B), which is a polyolefin resin or a modified product thereof,
wherein the polymer (A) is grafted on the resin (B).

2. The resin dispersion according to claim 1 , wherein the modified polyolefin resin is a chlorinated resin.

3. The resin dispersion according to claim 2 , wherein the resin (B) is a chlorinated polyolefin resin.

4. The resin dispersion according to claim 1 , wherein the polymer (A) has a glass transition temperature (Tg) in a range of −10° C. or higher and 60° C. or lower.

5. The resin dispersion according to claim 1 , wherein the polymer (A) comprises a constitutional unit derived from an α,β-unsaturated carboxylic acid ester.

6. The resin dispersion according to claim 1 , wherein a content of the polymer (A) is in a range of 30% by weight or higher and 90% by weight or lower.

7. The resin dispersion according to claim 1 , wherein the modified polyolefin resin has a weight-average molecular weight in a range of 10,000 or higher and 200,000 or lower.

8. A composition for adhesives, comprising:
the resin dispersion according to claim 1 .

9. A composition for paints, comprising the resin dispersion according to claim 1 .

10. An ink composition for gravure printing, comprising the resin dispersion according to claim 1 .

11. An ink composition for flexographic printing, comprising the resin dispersion according to claim 1 .

12. A gravure printed matter, comprising: the ink composition for gravure printing according to claim 10 .

13. A flexographic printed matter, comprising: the ink composition for flexographic printing according to claim 11 .

14. A method for gravure printing, comprising: printing the ink composition for gravure printing according to claim 10 on an object.

15. A method for flexographic printing, comprising:
printing the ink composition for flexographic printing according to claim 11 on an object.

Assignees

• Jujo Paper Co Ltd

Inventors

• Kono Masaru
• Yada Minoru
• Komoto Naosuke

Classifications

• C09D11/106 Primary

  containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C09J127/24

  halogenated · CPC title

• C09D127/24

  halogenated · CPC title

• C09J123/26

  modified by chemical after-treatment · CPC title

• C09J151/06

  grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond · CPC title