Coating compositions having epoxy functional stabilizer
View Patent ↗A coating composition including an epoxy functionalized stabilizer with a monomeric unit derived from a glycidyl ester of an α,β-unsaturated acid, or an anhydride thereof; and a thermoplastic dispersion.
1. A coating composition comprising:
an epoxy functionalized stabilizer comprising a monomeric unit derived from a glycidyl ester of an α,β-unsaturated acid, or an anhydride thereof; and
a thermoplastic dispersion, wherein said thermoplastic dispersion is a vinyl organosol.
2. The coating composition of claim 1 , wherein said acid is selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, α-chloroacrylic acid, α-cyanoacrylic acid, β-methylacrylic acid (crotoruc acid), α-phenylacrylic acid, α-acryloxypropionic acid, sorbic acid, α-chlorosorbic acid, angelic acid, cinnamic acid, p-chlorocinnamic acid, β-stearylacrylic acid, itaconic acid, citraconic acid, mesaconic acid, glutaconic acid, aconitic acid, maleic acid, fumaric acid, tricarboxyethylene, maleic anhydride, and mixtures thereof.
3. The coating composition of claim 1 , wherein said acid is selected from the group consisting of acrylic acid and methacrylic acid.
4. The coating of claim 1 , wherein said stabilizer further comprises a monomeric unit derived from an alkyl (meth)acrylate having the structure:
wherein R 1 is hydrogen or methyl, and R 2 is an alkyl group having one to sixteen carbon atoms.
5. The coating composition of claim 4 , wherein R 1 is methyl and R 2 is an alkyl group having two to eight carbon atoms.
6. The coating composition of claim 4 , wherein R 1 is methyl and R 2 is an alkyl group having two to four carbon atoms.
7. The coating composition of claim 4 , wherein the stabilizer is a copolymer comprising a first monomeric unit derived from glycidyl methacrylate (GMA) and a second monomeric unit derived from ethyl methacrylate (EMA).
8. The coating composition of claim 1 , wherein said vinyl organosol is a polyvinyl chloride organosol.
9. The coating composition of claim 1 , wherein the epoxy functionalized stabilizer has a weight average molecular weight of about 2,000 to about 15,000.
10. The coating composition of claim 1 , wherein the stabilizer has a weight average molecular weight of about 4,000 to about 8,000.
11. A coating composition comprising:
(a) an epoxy functionalized stabilizer, wherein the stabilizer is a copolymer comprising 20% to 90% by weight of a first a monomeric unit derived from a glycidyl ester of an α,β-unsaturated acid, or an anhydride thereof and 80% to 10% of a second monomeric unit derived from derived from an alkyl (meth)acrylate having the structure:
wherein R 1 is hydrogen or methyl, and R 2 is an alkyl group having one to sixteen carbon atoms; and
(b) a thermoplastic dispersion, wherein said thermoplastic dispersion is a vinyl organosol.
12. The coating composition of claim 11 , wherein the first monomeric unit is derived from glycidyl methacrylate (GMA) and the second monomeric unit derived from ethyl methacrylate (EMA).
13. The coating composition of claim 11 , further comprising a monomeric unit derived from a monounsaturated monomer.
14. The coating composition of claim 11 , wherein said thermoplastic dispersion comprises thermoplastic particles dispersed in at least one of an organic solvent, a plasticizer or a combination thereof.
15. The coating composition of claim 14 , wherein the thermoplastic particles comprise a halogenated polyolefin.
16. The coating composition of claim 14 , wherein said thermoplastic particles are polyvinylchloride.
17. A container with the coating composition of claim 11 applied to at least one surface thereof.
18. A method for making a coated container comprising:
(1) applying to a container a coating composition comprising:
(a) an epoxy functionalized stabilizer, wherein the stabilizer is a copolymer comprising 20% to 90% by weight of a first a monomeric unit derived from a glycidyl ester of an α,β-unsaturated acid, or an anhydride thereof; and 80% to 10% of a second monomeric unit derived from derived from an alkyl (meth)acrylate having the structure:
wherein R 1 is hydrogen or methyl, and R 2 is an alkyl group having one to sixteen carbon atoms; and
(b) a vinyl organosol; and
(2) curing said coating composition to form a coating.
19. The method of claim 18 , wherein said coating is free of bisphenol-A.
20. The method of claim 18 , wherein said coating is free of bisphenol-A-diglycidylether.
21. The method of claim 18 , wherein said coating is free of bisphenol-F.
22. The method of claim 18 , wherein said coating is free of bisphenol-F-diglycidylether.
23. A method, comprising:
(1) applying to a substrate a coating composition comprising:
(a) an epoxy functionalized stabilizer, wherein the stabilizer is a copolymer comprising 20% to 90% by weight of a first a monomeric unit derived from a glycidyl ester of an α,β-unsaturated acid, or an anhydride thereof; and 80% to 10% of a second monomeric unit derived from derived from an alkyl (meth)acrylate having the structure:
wherein R 1 is hydrogen or methyl, and R 2 is an alkyl group having one to sixteen carbon atoms; and
(b) a thermoplastic dispersion, wherein said thermoplastic dispersion is a vinyl organosol,
(2) curing said coating composition to form a coating on the substrate; and
(3) forming a container from the coated metal substrate.
24. The method of claim 23 , further comprising:
(4) placing food into said container.