Hybrid Latex Emulsions and Coating Compositions Formed From Hybrid Latex Emulsions

Patent metadata

Field	Value
Publication number	US-2016017171-A1
Application number	US-201414772947-A
Country	US
Kind code	A1
Filing date	Mar 11, 2014
Priority date	Mar 14, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

Hybrid latex emulsions are disclosed which can be used in the formation of coating compositions having good blush resistance, abrasion resistance, blister resistance, hardness and scratch resistance. In some embodiments, the coating compositions are used to coat substrates such as cans and packaging materials for the storage of food and beverages. Hybrid latex emulsions of the invention may be prepared by 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 hybrid latex emulsion. The ethylenically unsaturated monomer component may include an organosilane compound, which may include a reactive organic group and a hydrolysable inorganic alkoxysilane.

First claim

1 . A coating composition comprising a hybrid latex emulsion that is the product of a reaction between an initiator and a monomer emulsion formed from a mixture, in a carrier, of an ethylenically unsaturated monomer component and a stabilizer, wherein the ethylenically unsaturated component includes an organosilane compound and at least one ethylenically unsaturated monomer that is not an organosilane compound and wherein the coating composition has a gel content of greater than 50%.

2 . The coating composition of claim 1 , wherein the organosilane compound is present in an amount from about 0.1 to about 30% based on total solids of the hybrid latex emulsion.

3 . The coating composition of claim 1 , wherein the organosilane compound comprises a reactive organic group and a hydrolysable inorganic alkoxysilane.

4 . The coating composition of claim 1 , wherein the organosilane compound includes at least one of 3-methacryloxypropyltrimethoxysilane, 3-glycidyl oxypropyltriethoxysilane, 3-glycidyloxypropyltrimethoxysilane, amino ethyl aminopropyltrimethoxysilane, vinyltriethoxysilane, tetra-methoxy isilane, tetraethoxysilane, or methyltrimethoxysilane.

5 . The coating composition of claim 1 , wherein the stabilizer includes at least one of dodecylbenzene sulfonic acid, dinonylnaphthalene sulfonic acid, dinonylnaphthylenedisulfonic acid, or bis(2-ethylhexyl)sulfosuccinic acid.

6 . The coating composition of claim 1 , wherein the hybrid latex emulsion further comprises a crosslinker.

7 . The coating composition of claim 1 , wherein the ethylenically unsaturated monomer component includes at least one of tripropylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, ethyl glycol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, glycerol di(meth)-acrylate, glycidyl methacrylate, 1,4-butanediol di(meth) acrylate, hydroxy propyl(meth)acrylate, (meth)acrylic acid, a vinyl monomer, an acrylic monomer, an allylic monomer, an acrylamide monomer, a vinyl ester, a vinyl halide, a vinyl aromatic hydrocarbon, a vinyl aliphatic hydrocarbon monomer, a vinyl alkyl ether, an acrylic monomer, 1,3-butylene glycol (meth)acrylate, polyalkylene glycol di(meth)acrylate, diallyl phthalate, trimethylolpropane tri(meth)acrylate, divinylbenzene, divinyltoluene, trivinylbenzene, or divinylnaphthalene.

8 . The coating composition of claim 1 , wherein the hybrid latex emulsion is formed using a crosslinker that includes at least one of a phenolic resin, urea-formaldehyde, phenol-formaldehyde, or benzoguanamine formaldehyde.

9 . (canceled)

10 . The substrate of claim 11 , wherein the substrate is an end of a beer or beverage container.

11 . A substrate coated with the coating composition of claim 1 .

12 . The coating composition of claim 1 , wherein the hybrid latex emulsion is a hybrid core-shell latex emulsion.

13 . A method of forming a coating composition, the method comprising:
a) mixing an ethylenically unsaturated monomer component and a stabilizer in a carrier to form a monomer emulsion; and b) reacting the monomer emulsion with an initiator to form the hybrid latex emulsion, wherein the ethylenically unsaturated monomer component comprises an organosilane compound and at least one ethylenically unsaturated monomer which is not an organosilane compound, and wherein the coating composition has a gel content of greater than 50%.

14 . The method of claim 13 , wherein the organosilane compound is present in an amount from about 0.1 to about 30% based on total solids of the hybrid latex emulsion.

15 . The method of claim 13 , wherein the organosilane compound comprises a reactive organic group and a hydrolysable inorganic alkoxysilane.

16 . The method of claim 13 , wherein the organosilane compound includes at least one of 3-methacryloxypropyltrimethoxysilane, 3-glycidyl oxypropyltriethoxysilane, 3-glycidyloxypropyltrimethoxysilane, amino ethyl aminopropyltrimethoxysilane, vinyltriethoxysilane, tetra-methoxy isilane, tetraethoxysilane, or methyltrimethoxysilane.

17 . The method of claim 13 , wherein the stabilizer includes at least one of dodecylbenzene sulfonic acid, dinonylnaphthalene sulfonic acid, dinonylnaphthylenedisulfonic acid, or bis(2-ethylhexyl)sulfosuccinic acid.

18 . The method of claim 13 , wherein the hybrid latex emulsion further comprises a crosslinker.

19 . The method of claim 13 , wherein the ethylenically unsaturated monomer component includes at least one of tripropylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, ethyl glycol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, glycerol di(meth)-acrylate, glycidyl methacrylate, 1,4-butanediol di(meth)acrylate, hydroxypropyl (meth)acrylate, (meth)acrylic acid, a vinyl monomer, an acrylic monomer, an allylic monomer, an acrylamide monomer, a vinyl ester, a vinyl halide, a vinyl aromatic hydrocarbon, a vinyl aliphatic hydrocarbon monomer, a vinyl alkyl ether, an acrylic monomer, 1,3-butylene glycol (meth)acrylate, polyalkylene glycol di(meth)acrylate, diallyl phthalate, trimethylolpropane tri(meth)acrylate, divinylbenzene, divinyltoluene, trivinylbenzene, or divinylnaphthalene.

20 . The coating composition of claim 1 , wherein the hybrid latex emulsion is formed using a crosslinker that includes at least one of a phenolic resin, urea-formaldehyde, phenol-formaldehyde, or benzoguanamine formaldehyde.

21 . A coating composition having a gel content of greater than 50% and including an organosilane-acrylate copolymer hybrid latex emulsion that is the product of emulsion polymerization or mini-emulsion polymerization of an initiator and a monomer emulsion formed from a mixture in a carrier of a stabilizer, an organosilane compound, and an acrylate monomer.

Assignees

• Akzo Nobel Coatings Int Bv

Inventors

• Li Cathy
• Memmer Timothy I
• Scavuzzo Derek
• Bode Daniel

Classifications

• C08L83/00

  Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers · CPC title

• C09D143/04 Primary

  Homopolymers or copolymers of monomers containing silicon · CPC title

• C09D151/00

  Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds (based on ABS polymers C09D155/02); Coating compositions based on derivatives of such polymers · CPC title

• C09D5/022

  Emulsions, e.g. oil in water · CPC title

• C08G77/00

  Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule · CPC title