Aqueous composition

Patent metadata

Field	Value
Publication number	US-10184065-B2
Application number	US-201314893598-A
Country	US
Kind code	B2
Filing date	May 30, 2013
Priority date	May 30, 2013
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

The present invention provides a composition comprising i) an acrylic polymer dispersion and ii) a polyurethane/acrylic hybrid; wherein the acrylic polymer has a Tg from 25° C. to 80° C.; the polyurethane/acrylic hybrid has a Tg from −55° C. to 0° C.; and the minimum film formation temperature of the composition is lower than 10° C. The present invention further provides a coating comprising the composition.

First claim

What is claimed is:

1. A composition comprising i) an acrylic polymer dispersion having a Tg from 25° C. to 80° C. and ii) a polyurethane/acrylic hybrid component having a Tg from −55° C. to 0° C.;
wherein the composition has a minimum film formation temperature of lower than 10° C., and
wherein the acrylic polymer dispersion further comprises, as polymerized units, a diacetone acrylamide in an amount of 1 to 3 weight percent based on the total weight of monomers used to make the acrylic polymer.

2. The composition according to claim 1 , wherein the acrylic monomers in the acrylic polymer dispersion and in the polyurethane/acrylic hybrid are different acrylic compounds.

3. The composition according to claim 1 , wherein the polyurethane/acrylic hybrid further comprises, as polymerized units, a diacetone acrylamide.

4. The composition according to claim 3 , wherein the polyurethane/acrylic hybrid comprises, as polymerized units, a diacetone acrylamide in an amount of 1 to 3 weight percent based on the total weight of monomers used to make the acrylic portion of the polyurethane/acrylic hybrid.

5. The composition according to claim 1 further comprising an adipic acid dihydrazide.

6. The composition according claim 1 , wherein the acrylic polymer dispersion has a Tg from 28° C. to 70° C. and the polyurethane/acrylic hybrid has a Tg from −45° C. to −5° C.

7. A coating comprising i) an acrylic polymer dispersion and ii) a polyurethane/acrylic hybrid; wherein the acrylic polymer dispersion has a Tg from 25° C. to 80° C.;
wherein the polyurethane/acrylic hybrid has a Tg from −55° C. to 0° C.; wherein the composition has a minimum film formation temperature of lower than 10° C., and
wherein the acrylic polymer dispersion further comprises, as polymerized units, a diacetone acrylamide in an amount of 1 to 3 weight percent based on the total weight of monomers used to make the acrylic polymer.

8. The coating according to claim 7 , wherein acrylic monomers in the acrylic polymer dispersion and in the polyurethane/acrylic hybrid are different acrylic compounds.

9. The coating according to claim 7 , wherein the polyurethane/acrylic hybrid further comprises, as polymerized units, a diacetone acrylamide.

10. The coating according to claim 7 , wherein the composition further comprises an adipic acid dihydrazide.

11. The coating according to claim 7 , wherein the acrylic polymer dispersion has a Tg from 28° C. to 70° C. and the polyurethane/acrylic hybrid has a Tg from −45° C. to −5° C.

Assignees

• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Dong Xiangting
• Xu Yawei
• Yang Yurun
• Zhang Jinyuan
• Zhu Yangping

Classifications

• C09D133/12

  Homopolymers or copolymers of methyl methacrylate · CPC title

• C09D151/08

  grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C08F283/006

  on to polymers provided for in C08G18/00 (C08F283/004 takes precedence) · CPC title

• C08F220/58

  containing oxygen in addition to the carbonamido oxygen {, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine} · CPC title

• C09D133/08

  Homopolymers or copolymers of acrylic acid esters · CPC title