Coating composition, and a process for producing the same

Patent metadata

Field	Value
Publication number	US-9631115-B2
Application number	US-201114009634-A
Country	US
Kind code	B2
Filing date	Apr 8, 2011
Priority date	Apr 8, 2011
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

The present invention provides a coating composition, a process for producing the same, one or more coating layers derived therefrom, and articles comprising one or more such coating layers. The coating composition according to the present invention comprises: (a) from 10 to 90 percent by weight of an aqueous, high-solid, solvent-free alkyd dispersion comprising: (i) from 40 to 70 percent by weight of one or more alkyds based on the total weight of the dispersion, wherein each said one or more alkyds has an acid value of less than 20 and a molecular weight (Mn) in the range of greater than 1000 Dalton; (ii) from less than 10 percent by weight of one or more surfactants, based on the total weight of the dispersion; and (iii) from 30 to 55 percent by weight of water, based on the total weight of the dispersion; wherein said aqueous, high-solid, solvent-free alkyd dispersion has an average particle size diameter in the range of from 0.05 to 5 μm; (b) from 10 to 90 one or more second dispersions, one or more second emulsions, or combinations thereof; wherein said coating composition has a solid content of in the range of from 25 to 65 percent by weight of solid content, based on the total weight of the coating composition, and the coating composition has a pH in the range of from 7 to 11, and wherein the coating composition has a volume average particle size in the range of from 0.03 to 5 μm, and wherein the coating composition has a viscosity in the range of from 100 to 10,000 cP.

First claim

We claim:

1. A coating composition comprising:
(a) from 60 to 80 percent by weight based on the total weight of the coating composition of an aqueous, high-solid, solvent-free alkyd dispersion comprising:
from 40 to 70 percent by weight of one or more alkyds based on the total weight of the dispersion, wherein each said one or more alkyds has an acid value of less than 20, a viscosity equal to or greater than 15,000 cP at 80° C. and 0.1/sec and a molecular weight (M n ) in the range of greater than 1000 Dalton;
from more than 0 to less than 10 percent by weight of one or more surfactants, based on the total weight of the dispersion; and
from 30 to 55 percent by weight of water, based on the total weight of the dispersion;
wherein said aqueous, high-solid, solvent-free alkyd dispersion has an average particle size diameter in the range of from 0.05 to 5 μm;
and

(b) from 20 to 40 percent by weight an aqueous polyolefin dispersion comprising the melt blending product of a thermoplastic base polymer and a stabilizing agent in the presence of water and optionally a neutralizing agent, based on the total weight of the coating composition;
wherein said coating composition has a solid content of in the range of from 25 to 65 percent by weight of solid content, based on the total weight of the coating composition, and the coating composition has a pH in the range of from 7 to 11, and wherein the coating composition has a volume average particle size in the range of from 0.03 to 5 μm, and wherein the coating composition has a viscosity in the range of from 100 to 10,000 cP.

2. The coating composition according claim 1 , wherein said one or more alkyds are neutralized up to 100 percent by a neutralizing agent.

3. The coating composition according claim 1 , wherein said one or more alkyds are neutralized up to 200 percent by a neutralizing agent.

4. One or more coating layers derived from the coating composition of claim 1 .

5. An article comprising one or more coating layers derived from a coating composition of claim 1 .

6. The coating composition of claim 1 , wherein said alkyd dispersion has a solid content of greater than 60 weight percent, based on the weight of the alkyd dispersion.

Assignees

• Weier Jane E
• Kan Charles S
• Roper Iii John A
• Ortiz Rebecca S
• Young Timothy J
• Spilman Gary E
• Drumright Ray E
• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Weier Jane E
• Kan Charles S
• Roper Iii John A
• Ortiz Rebecca S
• Young Timothy J
• Spilman Gary E
• Drumright Ray E

Classifications

• C09D167/08 Primary

  Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids · CPC title

• C09D123/00

  Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers · CPC title

• C09D167/00 Primary

  Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain (based on polyester-amides C09D177/12; based on polyester-imides C09D179/08); Coating compositions based on derivatives of such polymers · CPC title

• C09D163/00

  Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins · CPC title

• C08L75/04

  Polyurethanes · CPC title