Coating composition for a metal, and metal material having a coating of such coating composition

• US 7,955,714 B2
• Filed: 09/07/2007
• Issued: 06/07/2011
• Est. Priority Date: 09/08/2006
• Status: Active Grant

• Current Assignee: Nissan Chemical Industries Limited (Shin-Etsu Chemical Company Limited)
• Original Assignee: Nissan Chemical Industries Limited (Shin-Etsu Chemical Company Limited)
• Inventors: Shinohara, Shuichiro, Mizusaki, Toru
• Primary Examiner(s): Jackson; Monique R
• Application Number:
  US11/898,077
• Publication Number:
  US 20080063893A1
• Time in Patent Office: 1,369 Days
• Field of Search: None
• US Class Current: 428/626
• CPC Class Codes: C09D 5/086 Organic or non-macromolecular compounds
• CPC Class Codes: Y10T 428/12569 Synthetic resin
• CPC Class Codes: Y10T 428/31529 Next to metal
• CPC Class Codes: Y10T 428/31605 Next to free metal
• CPC Class Codes: Y10T 428/31678 Of metal
• CPC Class Codes: Y10T 428/31681 Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
• CPC Class Codes: Y10T 428/31692 Next to addition polymer from unsaturated monomers

Abstract

A coating composition for a metal is provided. The coating composition comprises a synthetic resin solid content (A); a filler (B); and a mixture of (C-1) at least one member selected from an acetylene glycol represented by the following general formula (1):

an ethylene oxide-propylene oxide block adduct of an acetylene glycol represented by the following general formula (2):

and an ethylene oxide-propylene oxide random adduct of an acetylene glycol represented by the following general formula (3):

and (C-2) a polyoxyalkylene alkyl ether having an HLB of 8 to 18 represented by the following general formula (4):
R⁷O(C₃H₆O)_v(C₂H₄O)_w(C₃H₆O)_x(C₂H₄O)_y(C₃H₆O)_zH  (4).

Claims

1. A metal material comprising:

a substrate selected from the group consisting of iron, steel, copper, aluminum, and zinc plated steel; and

a coating of a coating composition which is formed on the surface of the substrate, wherein the coating composition comprises;

(A) 100 parts by weight of at least one synthetic resin solid content selected from the group consisting of (meth)acrylate resin emulsion, styrene-acrylate copolymer emulsion, vinyl acetate resin emulsion, vinyl acetate-(meth)acrylate copolymer emulsion, urethane resin emulsion, ethylene-vinyl acetate copolymer emulsion, polyester resin, and aqueous epoxy resin;

(B) 1 to 200 parts by weight of at least one filler selected from the group consisting of titanium dioxide, talc, kaolin, bentonite, mica, silica, heavy calcium carbonate, clay, precipitated barium sulfate, carbonic acid barium, glass beads, and resin beads; and

(C) 0.01 to 10 parts by weight of a mixture of

(C-1) 10 to 90% by weight of at least one member selected from an acetylene glycol represented by the following general formula (1);

2. The metal material according to claim 1, wherein the component (C-1) has a sodium content of up to 1,000 ppm and/or a potassium content of up to 2,000 ppm.

3. The metal material according to claim 1, wherein the metal material is produced by applying the coating composition on the metal surface to form a coating thereon.

4. The metal material according to claim 3, wherein the component (C-1) has a sodium content of up to 1,000 ppm and/or a potassium content of up to 2,000 ppm.

5. The metal material according to claim 3, wherein the metal on which the coating composition is applied is iron, steel, copper, or aluminum.

6. A metal material consisting essentially of:

a substrate selected from the group consisting of iron, steel, copper, aluminum, and zinc plated steel; and

a coating of a coating composition which is formed on the surface of the substrate, wherein the coating composition comprises;

(A) 100 parts by weight of at least one synthetic resin solid content selected from the group consisting of (meth)acrylate resin emulsion, styrene-acrylate copolymer emulsion, vinyl acetate resin emulsion, vinyl acetate-(meth)acrylate copolymer emulsion, urethane resin emulsion, ethylene-vinyl acetate copolymer emulsion, polyester resin, and aqueous epoxy resin;

(B) 1 to 200 parts by weight of at least one filler selected from the group consisting of titanium dioxide, talc, kaolin, bentonite, mica, silica, heavy calcium carbonate, clay, precipitated barium sulfate, carbonic acid barium, glass beads, and resin beads; and

(C) 0.01 to 10 parts by weight of a mixture of

(C-1) 10 to 90% by weight of at least one member selected from an acetylene glycol represented by the following general formula (1);

7. The metal material according to claim 6, wherein the component (C-1) has a sodium content of up to 1,000 ppm and/or a potassium content of up to 2,000 ppm.

8. The metal material according to claim 6, wherein the metal material is produced by applying the coating composition on the metal surface to form a coating thereon.

9. The metal material according to claim 8, wherein the component (C-1) has a sodium content of up to 1,000 ppm and/or a potassium content of up to 2,000 ppm.

10. The metal material according to claim 8, wherein the metal on which the coating composition is applied is iron, steel, copper, or aluminum.