Polyolefin silicon coating composition

Patent metadata

Field	Value
Publication number	US-10808144-B2
Application number	US-201715601346-A
Country	US
Kind code	B2
Filing date	May 22, 2017
Priority date	May 22, 2017
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

A coating composition comprising a polyolefin component and a silicon component, wherein the composition comprises 5.0 wt % or greater silicon-containing material, based on total solid weight of the composition, is disclosed. Substrates coated at least in part with such a coating composition, including packages such as metal cans, are also disclosed.

First claim

What is claimed is:

1. A coating composition comprising:
a. 20 to 95 wt % of a polyolefin component, where wt % is based on the total solids weight of the composition and wherein the polyolefin component is introduced in the form of a dispersion;
b. 5.0 wt % or greater of a silicon component,
where wt % is based on the total solids weight of the composition; and
c. 20 to 60 wt % of a polymeric component based on the total solids weight of the coating composition;
wherein the polyolefin component comprises homopolymers and/or copolymers of polyethylene and/or polypropylene;
wherein the polymeric component is different from the polyolefin component.

2. The coating composition of claim 1 , wherein the composition comprises greater than 5.0 wt % of the silicon component, based on the total solids weight of the composition.

3. The coating composition of claim 1 , wherein the composition comprises 5 to 50 wt % of the silicon component, based on the total solids weight of the composition.

4. The coating composition of claim 1 , wherein the composition comprises greater than 5 up to 50 wt % of the silicon component, based on the total solids weight of the composition.

5. The coating composition of claim 1 , wherein the composition comprises 25 to 95 wt % of the polyolefin component, where wt % is based on the total solid weight of the composition.

6. The coating composition of claim 1 , wherein the polymeric component comprises an acrylic resin.

7. The coating composition of claim 6 , wherein the coating composition further comprises an ethylene acrylic acid copolymer.

8. The coating composition of claim 1 , wherein the silicon component comprises a silanol functional silsesquioxane silicone resin.

9. A substrate coated at least in part with the coating composition of claim 1 .

10. The substrate of claim 9 , wherein the substrate comprises a package.

11. The substrate of claim 10 , wherein the package is a metal can.

12. The coating composition of claim 1 , wherein the composition does not include styrene.

13. The coating composition of claim 1 , wherein the composition does not include ethyl acrylate.

14. The coating composition of claim 1 , wherein the composition does not include n-butoxy methyl acrylamide.

15. The coating composition of claim 1 , wherein the composition is substantially free of bisphenol A and derivatives or residues thereof.

16. The coating composition of claim 1 , further comprising a crosslinker.

17. The coating composition of claim 16 , wherein the crosslinker comprises a hydroxyalkylamide.

18. The coating composition of claim 16 , wherein the crosslinker comprises a hydroxyl functional alkyl polyurea.

19. The coating composition of claim 1 , wherein the silicon-containing material does not comprise silicone gum.

20. The coating composition of claim 1 , wherein the dispersion has a resin solids content in an amount of 40 wt % or greater.

21. The coating composition of claim 1 , wherein further comprising a base.

22. The coating composition of claim 21 , wherein the base may be selected from an amine, alkanol amines, dimethyl ethanol amine, methyl diethanol amine, triethanol amine, and non-alkanol amines such as triethyl amine, tributyl amine, or ammonium hydroxide.

Assignees

• Ppg Ind Ohio Inc

Inventors

• Mcvay Robert
• Most Christopher L

Classifications

• C09D183/04 Primary

  Polysiloxanes · CPC title

• C09D123/08 Primary

  Copolymers of ethene (C09D123/16 takes precedence) · CPC title

• C09D7/65

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

• C09D7/41

  Organic pigments; Organic dyes · CPC title

• C08L71/08

  Polyethers derived from hydroxy compounds or from their metallic derivatives (C08L71/02 takes precedence) · CPC title