Coating agent, decorative film and article

Patent metadata

Field	Value
Publication number	US-9365737-B2
Application number	US-201314397436-A
Country	US
Kind code	B2
Filing date	Apr 25, 2013
Priority date	May 1, 2012
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

Provided are a coating agent giving a coating film which has superior adhesion even to polyolefin resin base materials that have not been subjected to preliminary surface treatment and which has satisfactory adhesion even to high-polarity base materials; a decorative film having at least one layer formed from said coating agent; an article decorated with said decorative film. The coating agent includes an olefin polymer having a heat of fusion in the range of 0 to 50 J/g and having a weight average molecular weight (Mw) as measured by GPC of 1×10 4 to 1000×10 4 , and a hydrocarbon-based synthetic oil having a 40° C. kinematic viscosity of 30 to 500,000 cSt.

First claim

The invention claimed is:

1. A coating agent comprising an olefin polymer (A) having a heat of fusion as measured in accordance with JIS K 7122 being in the range of 0 to 50 J/g and having a weight average molecular weight (Mw) as measured by GPC of 1×10 4 to 1000×10 4 , and a hydrocarbon-based synthetic oil (B) having a 40° C. kinematic viscosity of 1250 to 500,000 cSt,
wherein the olefin polymer (A) is at least one selected from the group consisting of (A1″) to (A3″):
(A1″) a propylene-based polymer containing 50 to 100 mol % of structural units derived from propylene and 50 to 0 mol % of structural units derived from α-olefins having 2 to 20 carbon atoms excluding propylene (provided that the total of propylene and the structural units derived from α-olefins having 2 to 20 carbon atoms is 100 mol %);
(A2″) a modified olefin polymer obtained from a propylene-based polymer part or whole of which is graft-modified with a polar group-containing monomer, the propylene-based polymer containing 50 to 100 mol % of structural units derived from propylene and 50 to 0 mol % of structural units derived from α-olefins having 2 to 20 carbon atoms excluding propylene (provided that the total of propylene and the structural units derived from α-olefins having 2 to 20 carbon atoms is 100 mol %), wherein based on 100 parts by weight of the modified olefin polymer, 0.1 to 15 parts by weight of structural units derived from the polar group-containing monomer is contained; and
(A3″) a halogen-modified olefin polymer obtained from a propylene-based polymer part or whole of which is halogen-modified, the propylene-based polymer containing 50 to 100 mol % of structural units derived from propylene and 50 to 0 mol % of structural units derived from α-olefins having 2 to 20 carbon atoms excluding propylene (provided that the total of propylene and the structural units derived from α-olefins having 2 to 20 carbon atoms is 100 mol %), wherein based on 100 parts by weight of the halogen-modified olefin polymer, the halogen content is 2 to 40 parts by weight.

2. The coating agent according to claim 1 , wherein the polar group-containing monomer is at least one selected from unsaturated carboxylic acids and unsaturated carboxylic acid anhydrides.

3. The coating agent according to claim 1 , wherein the hydrocarbon-based synthetic oil (B) is a polymer of an olefin having 2 to 20 carbon atoms.

4. The coating agent according to claim 1 , wherein the olefin polymer (A) accounts for 20 to 99 parts by weight, and the hydrocarbon-based synthetic oil (B) accounts for 80 to 1 parts by weight (provided that the total of (A) and (B) is 100 parts by weight).

5. The coating agent according to claim 1 , which is a primer.

6. The coating agent according to claim 1 , which is a coating material.

7. The coating agent according to claim 1 , which is a hot melt adhesive.

8. A decorative film having at least one layer formed from the coating agent according to claim 1 .

9. An article decorated with the decorative film according to claim 8 .

10. The article according to claim 9 , wherein the decoration is performed by using a vacuum pressure forming machine.

11. The coating agent according to claim 1 , wherein the α-olefin having 2 to 20 carbon atoms excluding propylene in (A1″) to (A3″) is 1-butene or octane.

Assignees

• Mitsui Chemicals Inc

Inventors

• Hirota Yoshihito
• Ito Yuichi

Classifications

• C09J2201/61

  Chemistry & Metallurgy · mapped topic

• C09J7/0257

  Chemistry & Metallurgy · mapped topic

• C09J2201/622

  Chemistry & Metallurgy · mapped topic

• C09J123/283

  Halogenated homo- or copolymers of iso-olefines · CPC title

• C08F222/06

  Maleic anhydride · CPC title