Halogen-free waterborne coating composition

Patent metadata

Field	Value
Publication number	US-9523017-B2
Application number	US-201113995144-A
Country	US
Kind code	B2
Filing date	Dec 23, 2011
Priority date	Dec 24, 2010
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

The present invention provides a mono coating film type waterborne coating composition comprising halogen free polyolefin resin, acryl polyol, acryl emulsion, and a solvent. According to the present invention, adhesion to a polyolefin substrate is excellent, and physical/chemical properties may be maintained with a single coating film instead of the currently used dual coating films, by a halogen free waterborne composition with physical/chemical properties similar to or more excellent than the existing oil coating or halogen-containing coating composition. Since these effects may be sufficiently obtained with a single coating film, consumption of coating may be reduced about 30˜40% compared to the existing method, and particularly, cost reduction may be expected through decrease in equipment required for dual coating film, energy for drying coating film, attractive force of coating, productivity increase, and the like.

First claim

What is claimed is:

1. A mono coating film type waterborne coating composition comprising 25 to 65 parts by weight of a halogen free polyolefin resin, 5 to 40 parts by weight of an acryl polyol, 5 to 40 parts by weight of an acryl emulsion, and a solvent, based on 100 parts by weight of total solid content;
wherein the halogen free polyolefin resin has a weight average molecular weight of 80,000 to 150,000 and the acryl polyol has an OH % of 2.0 to 4.5%.

2. The mono coating film type waterborne coating composition according to claim 1 , further comprising 2 to 20 parts by weight of a pigment, based on 100 parts by weight of total solid content.

3. The mono coating film type waterborne coating composition according to claim 1 , wherein the halogen free polyolefin resin is acryl modified polyolefin.

4. The mono coating film type waterborne coating composition according to claim 1 , wherein the acryl emulsion is a styrene based acryl emulsion.

5. The mono coating film type waterborne coating composition according to claim 1 , further comprising a curing agent.

6. A coating film product obtained by coating the mono coating film type waterborne coating composition according to claim 1 on a polyolefin based substrate.

7. The coating film product according to claim 6 , wherein the mono coating film type waterborne coating composition is coated without treating the polyolefin based substrate with a primer.

8. The coating film product according to claim 6 , wherein the polyolefin based substrate is an olefinic thermoplastic elastomer (TPO) or a polypropylene (PP).

9. A method of coating comprising:
coating the mono coating film type waterborne coating composition according to claim 1 onto a polyolefin based substrate.

10. The method according to claim 9 , wherein the mono coating film type waterborne coating composition is coated without treating the polyolefin based substrate with a primer.

11. The method according to claim 9 , wherein the polyolefin based substrate is an olefinic thermoplastic elastomer (TPO) or a polypropylene (PP).

12. A coating film product obtained by coating the mono coating film type waterborne coating composition according to claim 1 on a polyolefin based substrate.

13. A coating film product obtained by coating the mono coating film type waterborne coating composition according to claim 2 on a polyolefin based substrate.

14. A coating film product obtained by coating the mono coating film type waterborne coating composition according to claim 3 on a polyolefin based substrate.

15. A coating film product obtained by coating the mono coating film type waterborne coating composition according to claim 4 on a polyolefin based substrate.

16. A coating film product obtained by coating the mono coating film type waterborne coating composition according to claim 5 on a polyolefin based substrate.

17. The mono coating film type waterborne coating composition according to claim 2 , wherein the halogen free polyolefin resin is acryl modified polyolefin.

18. The mono coating film type waterborne coating composition according to claim 3 , wherein the acryl emulsion is a styrene based acryl emulsion.

19. The mono coating film type waterborne coating composition according to claim 2 , further comprising a curing agent.

Assignees

• Lee Chai-Ki
• Park Young-Tae
• Park Peng-Sam
• Akzo Nobel Coatings Int Bv

Inventors

• Lee Chai-Ki
• Park Young-Tae
• Park Peng-Sam

Classifications

• Y10T428/31913

  Monoolefin polymer · CPC title

• C09D123/02 Primary

  not modified by chemical after-treatment · CPC title

• Y10T428/31938

  Polymer of monoethylenically unsaturated hydrocarbon · CPC title

• C08L33/04

  Homopolymers or copolymers of esters {(C08L43/04 takes precedence)} · CPC title

• C09D133/04

  Homopolymers or copolymers of esters {(C09D143/04 takes precedence)} · CPC title