Aqueous dispersion mixture

Patent metadata

Field	Value
Publication number	US-10344156-B2
Application number	US-201615573508-A
Country	US
Kind code	B2
Filing date	May 13, 2016
Priority date	May 15, 2015
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

The present invention provides an aqueous dispersion mixture comprising; an aqueous dispersion (A) that comprises a crystalline polyolefin (a) as a dispersoid thereof; an aqueous dispersion (B) that comprises a crystalline polyurethane (b) as a dispersoid thereof; and an aqueous dispersion (C) that comprises a non-crystalline polyurethane (c) as a dispersoid thereof, wherein the crystalline polyolefin (a) is a non-chlorine modified polyolefin, wherein the crystalline polyurethane (b) has a crystal melting heat amount equal to or larger than 3 J/g measured by differential scanning calorimetry, wherein the non-crystalline polyurethane (c) has a crystal melting heat amount smaller than 3 J/g measured by differential scanning calorimetry, and wherein the aqueous dispersion (B) comprises a non-volatile content of 30 parts by mass to 100 parts by mass and the aqueous dispersion (C) comprises a non-volatile content of 20 parts by mass to 80 parts by mass, relative to a non-volatile content of 100 parts by mass of the aqueous dispersion (A).

First claim

The invention claimed is:

1. An aqueous dispersion mixture comprising;
an aqueous dispersion (A) that comprises a crystalline polyolefin (a) as a dispersoid thereof;
an aqueous dispersion (B) that comprises a crystalline polyurethane (b) as a dispersoid thereof; and
an aqueous dispersion (C) that comprises a non-crystalline polyurethane (c) as a dispersoid thereof, wherein
the crystalline polyolefin (a) is a non-chlorine modified polyolefin, wherein
the crystalline polyurethane (b) has a crystal melting heat amount equal to or larger than 3 J/g measured by differential scanning calorimetry, wherein
the non-crystalline polyurethane (c) has a crystal melting heat amount smaller than 3 J/g measured by differential scanning calorimetry, and wherein
the aqueous dispersion (B) comprises a non-volatile content of 30 parts by mass to 100 parts by mass and the aqueous dispersion (C) comprises a non-volatile content of 20 parts by mass to 80 parts by mass, relative to a non-volatile content of 100 parts by mass of the aqueous dispersion (A).

2. The aqueous dispersion mixture according to claim 1 , wherein
the non-chlorine modified crystalline polyolefin (a) comprises a modified functional group unit of 0.1 to 40 parts by mass relative to 100 parts by mass of an olefin unit.

3. The aqueous dispersion mixture according to claim 1 , wherein
melting points of the non-chlorine modified crystalline polyolefin (a) and the crystalline polyurethane (b) measured by differential scanning calorimetry (DSC) are each equal to or lower than 100° C.

4. The aqueous dispersion mixture according to claim 1 , wherein
a weight average molecular weight Mw of the non-chlorine modified crystalline polyolefin (a) is 20,000 to 200,000.

5. The aqueous dispersion mixture according to claim 1 , wherein
the dispersoids of the aqueous dispersions (A), (B), and (C) each have an average particle diameter equal to or smaller than 1.0 μm.

6. The aqueous dispersion mixture according to claim 1 , wherein
the dispersoid of the aqueous dispersion (A) is a self-emulsion of a non-chlorine modified crystalline polyolefin.

7. The aqueous dispersion mixture according to claim 1 , wherein
glass transition points of the crystalline polyurethane (b) and the non-crystalline polyurethane (c) measured by differential scanning calorimetry (DSC) are each equal to or lower than −20° C.

8. The aqueous dispersion mixture according to claim 1 , wherein
the crystalline polyurethane (b) and the non-crystalline polyurethane (c) are each a polyurethane that comprises, as a constituting component of the polyurethane, one or more structural unit(s) selected from the group consisting of an aliphatic diisocyanate, an alicyclic diisocyanate, and an aromatic diisocyanate, and one or more structural unit(s) selected from the group consisting of a polyester polyol, a polycarbonate polyol, and a polytetramethyleneether glycol.

9. The aqueous dispersion mixture according to claim 1 , wherein
the crystalline polyurethane (b) comprises a carboxyl group and/or a sulfonyl group.

10. A method for producing a coated film, the method comprising a step of applying the aqueous dispersion mixture according to claim 1 , to a base material.

11. The method for producing a coated film, according to claim 10 , wherein
the base material comprises an olefin-based resin.

12. A painted article comprising an applied and dried item of the aqueous dispersion mixture according to claim 1 .

13. An aqueous paint composition comprising the aqueous dispersion mixture according to claim 1 .

14. The aqueous paint composition according to claim 13 , comprising, relative to 100 parts by mass of a non-volatile content of the aqueous dispersion (A):
30 to 100 parts by mass of a non-volatile content of the aqueous dispersion (B);
20 to 80 parts by mass of a non-volatile content of the aqueous dispersion (C);
1 to 200 parts by mass of a pigment (D);
0 to 50 parts by mass of a viscosity modifier (E);
0 to 1,000 parts by mass of a solvent (F);
0 to 50 parts by mass of an auxiliary resin (G); and
0 to 100 parts by mass of other additives (H).

15. The aqueous paint composition according to claim 13 , wherein
an amount of a volatile organic compound (VOC) is equal to or smaller than 250 g/L.

16. An aqueous primer composition comprising the aqueous dispersion mixture according to claim 1 .

17. The aqueous primer composition according to claim 16 , wherein
an amount of a volatile organic compound is equal to or smaller than 250 g/L.

18. An aqueous adhesive comprising the aqueous dispersion mixture according to claim 1 .

Assignees

• Sumitomo Chemical Co
• Covestro Deutschland Ag

Inventors

• Nakajima Hideto
• Morita Hiroshi
• Higashimoto Hiroyuki

Classifications

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• C09J123/00

  Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers · CPC title

• C09D123/00

  Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers · CPC title

• C09J123/26

  modified by chemical after-treatment · CPC title

• C09D175/04

  Polyurethanes · CPC title