Polymer dispersion and its application in high pigment volume concentration paints

Patent metadata

Field	Value
Publication number	US-10155832-B2
Application number	US-201415523948-A
Country	US
Kind code	B2
Filing date	Nov 13, 2014
Priority date	Nov 13, 2014
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

The present invention provides a dispersion of polymer particles comprising, as polymerized units, by dry weight based on total dry weight of the polymer particles, from 85% to 99.9% ethylenically unsaturated nonionic monomers, from 0.01% to 4% phosphorous-containing (meth)acrylate monomers, and at least one neutralizer. The final pH of the polymer dispersion is above 6, and from 50% to 100% by mole of the total neutralizers are alcohol amines. The present invention further provides a paint comprising said dispersion. The paint has both satisfactory paint viscosity stability and improved paint performances such as scrub resistance, stain resistance, corrosion resistance and durability.

First claim

What is claimed is:

1. A dispersion of polymer particles comprising, as polymerized units, by dry weight based on total dry weight of the polymer particles, from 85% to 99.9% ethylenically unsaturated nonionic monomers, from 0.01% to 4% phosphorous-containing (meth)acrylate monomers, and at least one neutralizer;
wherein the final pH of the polymer dispersion is above 6, and from 50% to 71% by mole of the total neutralizers are alcohol amines; and
wherein the at least one neutralizer comprises sodium hydroxide.

2. The dispersion according to claim 1 wherein the polymer particles further comprises, as polymerized units, by dry weight based on total dry weight of the polymer particles, from 0.01% to 5% stabilizer monomers.

3. The dispersion according to claim 1 wherein the ethylenically unsaturated nonionic monomers are selected from alkyl esters of (methyl) acrylic acids, (meth)acrylonitrile, (meth)acrylamide, amino-functional and ureido-functional monomers, monomers bearing acetoacetate-functional groups, monomers bearing carbonyl-containing groups, ethylenically unsaturated monomers having a benzene ring, butadiene, α-olefins, vinyl esters, vinyl monomers, glycidyl (meth)acrylate, and any combination thereof.

4. The dispersion according to claim 3 wherein the ethylenically unsaturated nonionic monomers are selected from styrene, C 2 -C 12 alkyl esters of (methyl) acrylic acids, and any combination thereof.

5. The dispersion according to claim 1 wherein the phosphorus-containing (meth)acrylate monomers are selected from phosphoalkyl (meth)acrylates and salts thereof, phosphoalkoxy (meth)acrylates and salts thereof, and any combination thereof.

6. The dispersion according to claim 5 wherein the phosphorus-containing (meth)acrylate monomers are mono- or di-ester of phosphoethyl methacrylates.

7. The dispersion according to claim 1 wherein the alcohol amines are selected from mono ethanol amine, propanol amine, diethanolamine (DEA), triethanolamine (TEA), 2-amino-2-methyl-1-propanol and/or 2-aminol-2-ethyl-1, 3-propane-diol, N-methyldiethanolamine (NMDEA), monomethylethanolamine (MMEA), 2-(2-aminoethoxy) ethanol, N,N-dimethyl-2-(2-aminoethoxy) ethanol (DMDGA), tetramethyl bis (aminoethyl) ether, and any combination thereof.

8. A paint comprising the dispersion according to claim 1 .

9. A paint comprising the dispersion according to claim 2 .

10. A paint comprising the dispersion according to claim 3 .

11. A paint comprising the dispersion according to claim 4 .

12. A paint comprising the dispersion according to claim 5 .

13. A paint comprising the dispersion according to claim 6 .

14. A paint comprising the dispersion according to claim 7 .

Assignees

• Rohm & Haas

Inventors

• Liu Han
• Dong Xiangting
• Zhang Qingwei
• Wang Caifeng

Classifications

• C08F230/02

  containing phosphorus · CPC title

• C09D7/63

  organic · CPC title

• C09D133/06

  of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical · CPC title

• C08F220/06

  Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof · CPC title

• C08K5/05

  Alcohols; Metal alcoholates · CPC title