Latex Emulsions and Coating Compositions Prepared from Latex Emulsions

Patent metadata

Field	Value
Publication number	US-2016009941-A1
Application number	US-201414771277-A
Country	US
Kind code	A1
Filing date	Mar 11, 2014
Priority date	Mar 11, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

The present invention includes coating compositions and methods for coating substrates using the coating compositions. In some embodiments of the invention, a coating composition is prepared having a latex emulsion prepared by a method including mixing an ethylenically unsaturated monomer component and a stabilizer in a carrier to form a monomer emulsion, and reacting the monomer emulsion with an initiator to form the latex emulsion, wherein the latex emulsion comprises benzyl (meth)acrylate, cyclohexyl (meth)acrylate, or a mixture thereof.

First claim

1 . A latex emulsion formed from a reaction of an initiator with a monomer emulsion, wherein the monomer emulsion is a mixture of an ethylenically unsaturated monomer component that includes at least one of benzyl (meth)acrylate or cyclohexyl (meth)acrylate with a stabilizer in a carrier.

2 . (canceled)

3 . The latex emulsion of claim 1 , wherein the stabilizer includes a strong acid catalyst.

4 . The latex emulsion of claim 3 , wherein the strong acid catalyst includes at least one of a sulfonic acid, a triflic acid, a triflate salt of a metal of Group IIA, IIB, IIIA, IIIB or VIIIA of the Periodic Table of Elements (according to the IUPAC 1970 convention), or a mixture of said triflate salts.

5 . The latex emulsion of claim 1 , wherein the ethylenically unsaturated monomer component is present in an amount from about 1% to about 85 by weight polymeric solids.

6 . The latex emulsion of claim 1 , wherein the stabilizer is present in an amount from about 0.1% to about 2.0% by weight polymeric solids.

7 . The latex emulsion of claim 1 , wherein the mixture includes one or more of ammonia, dimethylethanolamine, or 2-dimethylamino-2-methyl-1-propanol.

8 . A coating composition prepared by reacting the latex emulsion of claim 1 with a neutralizer.

9 . A can or packaging coated with the coating composition of claim 8 .

10 . A method for preparing a latex emulsion, the method comprising:
i) mixing an ethylenically unsaturated monomer component that includes at least one of benzyl (meth)acrylate or cyclohexyl (meth)acrylate with a stabilizer in a carrier to form a monomer emulsion; and ii) reacting the monomer emulsion with an initiator to form a latex emulsion.

11 . The method of claim 10 , wherein the stabilizer includes a strong acid catalyst.

12 . The method of claim 11 , wherein the strong acid catalyst includes at least one of a sulfonic acid, a triflic acid, a triflate salt of a metal of Group IIA, IIB, IIIA, IIIB or VIIIA of the Periodic Table of Elements (according to the IUPAC 1970 convention), or a mixture of said triflate salts.

13 . The method of claim 10 , wherein the stabilizer is present in an amount from about 0.1% to about 2.0% by weight polymeric solids.

14 . The method of claim 10 , wherein the mixing of step i) occurs in the presence of one or more of ammonia, dimethylethanolamine, or 2-dimethylamino-2-methyl-1-propanol.

15 . A coating composition prepared by reaction of a neutralizer with the latex emulsion of claim 10 .

16 . A can or packaging coated with the coating composition of claim 15 .

Assignees

• Akzo Nobel Coatings Int Bv

Inventors

• Rademacher Jude Thomas

Classifications

• C09D125/14

  with unsaturated esters · CPC title

• C09D133/10 Primary

  Homopolymers or copolymers of methacrylic acid esters · CPC title

• C08F2/22

  Emulsion polymerisation · CPC title

• C09D133/08

  Homopolymers or copolymers of acrylic acid esters · CPC title