Coating compositions

Patent metadata

Field	Value
Publication number	US-9416291-B2
Application number	US-201514863087-A
Country	US
Kind code	B2
Filing date	Sep 23, 2015
Priority date	Aug 25, 2003
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

Embodiments of the present disclosure are directed towards coating compositions comprising from 50 to 85 percent of an aqueous dispersion based on a total weight of the coating composition, an abrasion reducing composition, a solvent, a basic water composition, and a crosslinker.

First claim

What is claimed:

1. A coated article comprising a substrate and a coating on the substrate, wherein the coating includes the coating composition comprises:
from 50 to 85 percent of an aqueous dispersion based on a total weight of the coating composition, wherein the aqueous dispersion comprises a melt blending product of (a) a base polymer comprising at least one polyolefin, (b) a polymeric stabilizing agent, and (c) a compatiblizer, wherein the aqueous dispersion has a solid content from 15 weight percent to 70 weight percent based on a total weight of the aqueous dispersion, the solid content comprises from 50 to 85 percent by weight of the base polymer based on a total weight of the solids content, from 10 to 35 percent by weight of the stabilizing agent based on the total weight of the solids content, and from 2 to 15 percent by weight of the compatiblizer based on the total weight of the solids content;
an abrasion reducing composition comprising a hydroxy functional polysiloxane that is from 0.01 weight percent to 0.10 weight percent of the coating composition based on the total weight of the coating composition;
a solvent, wherein the solvent is from 3 weight percent to 20 weight percent of the coating composition based on the total weight of the coating composition;
a basic water composition comprising from 90 to 99.99 percent by weight of the water based on a total weight of the basic water composition and from 0.01 percent to 10 percent by weight of a base based on the total weight of the basic water composition, wherein the basic water composition is from 10 weight percent to 25 weight percent of the coating composition based on the total weight of the coating composition; and a crosslinker, wherein the crosslinker is from 0.01 weight percent to 40 weight percent of the coating composition based on the total weight of the coating composition.

2. The coated article of claim 1 , wherein the substrate is a metal substrate.

3. The coated article of claim 1 , wherein the hydroxy functional polysiloxane is polyether modified, polyester modified, or polyether-polyester modified.

4. The coated article of claim 1 , wherein the hydroxy functional polysiloxane has a hydroxyl equivalent weight of 500 to 2000 grams per hydroxyl equivalent.

5. The coated article of claim 1 , wherein the at least one polyolefin comprises polypropylene.

6. The coated article of claim 1 , wherein the solvent is selected from the group of ethylene glycol, diethylene glycol monoethyl ether, dipropylene glycol dimethyl ether, propylene glycol methyl ether, ethanol, dipropylene glycol methyl ether, and combinations thereof.

7. The coated article of claim 1 , wherein the crosslinker is a hydroxyalkyl amide.

8. The coated article of claim 1 , wherein the stabilizing agent is selected from the group of ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, and combinations thereof.

9. The coated article of claim 1 , wherein the compatiblizer comprises a maleic anhydride grafted polypropylene polymer.

10. The coated article of claim 1 , where the coating composition is cured to form a cured coating on the substrate.

11. A coated article comprising a substrate and a coating on the substrate, wherein the coating includes the coating composition comprises:
from 50 to 85 percent of an aqueous dispersion based on a total weight of the coating composition, wherein the aqueous dispersion comprises a melt blending product of (a) a base polymer comprising at least one polyolefin, (b) a polymeric stabilizing agent, and (c) a compatiblizer, wherein the aqueous dispersion has a solid content from 15 weight percent to 70 weight percent based on a total weight of the aqueous dispersion, the solid content comprises from 50 to 85 percent by weight of the base polymer based on a total weight of the solids content, from 10 to 35 percent by weight of the stabilizing agent based on the total weight of the solids content, and from 2 to 15 percent by weight of the compatiblizer based on the total weight of the solids content;
an abrasion reducing composition comprising a Fischer-Tropsch wax that is from 0.01 weight percent to 1.5 weight percent of the coating composition based on the total weight of the coating composition;
a solvent, wherein the solvent is from 3 weight percent to 20 weight percent of the coating composition based on the total weight of the coating composition;
a basic water composition comprising from 90 to 99.99 percent by weight of the water based on a total weight of the basic water composition and from 0.01 percent to 10 percent by weight of a base based on the total weight of the basic water composition, wherein the basic water composition is from 10 weight percent to 25 weight percent of the coating composition based on the total weight of the coating composition; and
a crosslinker, wherein the crosslinker is from 0.01 weight percent to 40 weight percent of the coating composition based on the total weight of the coating composition.

12. The coated article of claim 11 , wherein the at least one polyolefin comprises polypropylene.

13. The coated article of claim 11 , wherein the solvent is selected from the group of ethylene glycol, diethylene glycol monoethyl ether, dipropylene glycol dimethyl ether, propylene glycol methyl ether, ethanol, dipropylene glycol methyl ether, and combinations thereof.

14. The coated article of claim 11 , wherein the crosslinker is a hydroxyalkyl amide.

15. The coated article of claim 11 , wherein the stabilizing agent is selected from the group of ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, and combinations thereof.

16. The coated article of claim 11 , wherein the compatiblizer comprises a maleic anhydride grafted polypropylene polymer.

17. The coated article of claim 11 , where the coating composition is cured to form a cured coating on the substrate.

Assignees

• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Wilbur Jeffrey
• Lindenmuth Denise
• Drumright Ray E
• Metla Dharakumar
• Malotky David L
• Kainz Bernhard

Classifications

• C08L91/06

  Waxes · CPC title

• C09D123/10

  Homopolymers or copolymers of propene · CPC title

• C09D133/02

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title

• C08G77/46

  containing polyether sequences · CPC title

• C09D7/65

  macromolecular (C09D7/41-C09D7/48 take precedence) · CPC title