Base coats and methods of using and producing the same

Patent metadata

Field	Value
Publication number	US-11021612-B2
Application number	US-201816117501-A
Country	US
Kind code	B2
Filing date	Aug 30, 2018
Priority date	Aug 30, 2018
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

Base coats, methods of using base coats, and methods of producing base coats are provided. In an exemplary embodiment, a method of producing a base coat includes forming a CPO intermediate and a color intermediate. The CPO intermediate includes a chlorinated polyolefin at from about 5 to about 20 weight percent, based on a total weight of the CPO intermediate, as well as a CPO solvent. The color intermediate includes a color imparting additive and a color solvent that is different than the CPO solvent. The CPO intermediate and the color intermediate are combined to form the base coat, where the base coat includes from about 1 to about 3 weight percent chlorinated polyolefin and from about 5 to about 30 weight percent solids, based on a total weight of the base coat.

First claim

What is claimed is:

1. A method of producing a base coat comprising:
forming a CPO intermediate comprising a CPO solvent and a chlorinated polyolefin, wherein the CPO intermediate comprises from about 5 to about 20 weight percent of the chlorinated polyolefin, based on a total weight of the CPO intermediate, and wherein the CPO solvent comprises one or more of methyl amyl ketone and butyl acetate;
forming a color intermediate comprising a color imparting additive and a color solvent, wherein the color solvent is different from the CPO solvent, and wherein the color solvent comprises acetone;
combining the CPO intermediate with the color intermediate to form the base coat, wherein the base coat comprises from about 1 to about 3 weight percent of the chlorinated polyolefin, based on a total weight of the base coat, and wherein the base coat comprises solids at from about 5 to about 30 weight percent, based on the total weight of the base coat.

2. The method of claim 1 wherein forming the CPO intermediate comprises forming the CPO intermediate with from about 5 to about 10 weight percent of the chlorinated polyolefin.

3. The method of claim 1 wherein the base coat further comprises a coating resin.

4. The method of claim 3 wherein:
the color intermediate comprises the coating resin.

5. The method of claim 3 wherein:
the coating resin comprises a crosslinkable component.

6. The method of claim 5 further comprising:
forming a crosslinking catalyst part, wherein the crosslinking catalyst part comprises a crosslinking component configured to crosslink the crosslinkable component of the coating resin; and
combining the crosslinking catalyst part with the base coat.

7. The method of claim 3 wherein:
the coating resin is selected from the group consisting of a urethane resin, an acrylic resin, a polyester resin, and combinations thereof.

8. The method of claim 1 wherein:
the CPO solvent comprises methyl amyl ketone.

9. The method of claim 1 wherein the CPO solvent comprises butyl acetate.

10. The method of claim 1 wherein the base coat comprises solids at from about 10 to about 30 weight percent, based on the total weight of the base coat.

11. The method of claim 1 wherein:
the chlorinated polyolefin comprises maleic anhydride modified chlorinated polyolefins.

12. The method of claim 1 wherein:
forming the CPO intermediate comprises dissolving the chlorinated polyolefin in the CPO solvent.

13. The method of claim 12 wherein:
forming the color intermediate comprises dispersing the color imparting additive in the color solvent.

14. The method of claim 1 wherein:
the chlorinated polyolefin comprises chlorine at from at from about 15 to about 45 weight percent based on a total weight of the chlorinated polyolefin.

15. A method of coating a substrate comprising:
forming a CPO intermediate comprising a CPO solvent and a chlorinated polyolefin, wherein the CPO intermediate comprises from about 5 to 20 weight percent of the chlorinated polyolefin, based on a total weight of the CPO intermediate, and wherein the CPO solvent comprises one or more of butyl acetate and methyl amyl ketone;
forming a color intermediate comprising a color imparting additive and a color solvent, wherein the color solvent is different from the CPO solvent, and wherein the color solvent comprises acetone;
combining the CPO intermediate with the color intermediate to form a base coat, wherein the base coat includes the chlorinated polyolefin at from about 1 to about 3 weight percent, based on a total weight of the base coat, and wherein the base coat comprises solids at from about 5 to about 30 weight percent, based on the total weight of the base coat.
applying the base coat over the substrate such that the base coat directly contacts the substrate, wherein the substrate primarily comprises polyolefin; and
curing the base coat to form a cured coating layer in direct contact with the substrate.

16. The method of claim 15 further comprising:
applying a clearcoat overlying the cured coating layer; and
curing the clearcoat to form a cured clearcoat.

17. The method of claim 16 , wherein
the basecoat further comprises a coating resin, wherein the coating resin comprises a crosslinkable component; and
the method further comprising:
forming a crosslinking catalyst part, wherein the crosslinking catalyst part comprises a corsslinking component configured to crosslink with the crosslinkable component of the coating resin; and
combining the crosslinking catalyst part with the base coat prior to applying the combined crosslinking catalyst part and base coat over the substrate.

18. The method of claim 15 wherein:
the chlorinated polyolefin comprises chlorine at from about 15 to about 45 weight percent based on a total weight of the chlorinated polyolefin.

19. The method of claim 15 wherein:
the CPO intermediate comprises the chlorinated polyolefin at from about 5 to about 10 weight percent, based on the total weight of the CPO intermediate.

Assignees

• Axalta Coating Systems Ip Co

Inventors

• Pohl Mark P
• Calhoun Eric
• Pennock Robert E

Classifications

• B05D3/108

  Curing · CPC title

• B05D2401/10

  Organic solvent (B05D2401/21 takes precedence) · CPC title

• B05D7/536

  each layer being cured, at least partially, separately · CPC title

• C09D7/65

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

• B05D7/26

  synthetic lacquers or varnishes (B05D7/08, B05D7/16 take precedence) · CPC title