Claims
- 1. A coated article characterized in that it has a coating film formed by the coating film forming method of applying a water-based coating composition which comprises:
- (i) 100 parts by weight, on the solid content basis, of a composition comprising 100 parts by weight, on the solid content basis, of a self-emulsifying polycarbonate-based polyurethane resin emulsion and 5 to 100 parts by weight, on the solid content basis, of an aqueous resol phenol resin and the water-based coating composition has a pH of 7.0 to 10.0, and further comprising at least one member selected from the group consisting of oxazoline compounds having a glass transition temperature of not lower than 40.degree. C. and containing a styrenic polymer or a styrene-acrylic copolymer, and melamine resins having a curing initiation temperature of not higher than 140.degree. C., the total amount, on the solid content basis, of said member and the aqueous phenol resin being 10 to 200 parts by weight, and
- (ii) 0.5 to 5 parts by weight, on the solid content basis, of at least one acidic catalyst selected from the group consisting of dodecylbenzensulfonic acid, amine salts and ammonium salts thereof, dinonylnaphthalensulfonic acid, amine salts and ammonium salts thereof, acidic amine salts and ammonium salts of phosphoric acid, aminotri(methylenephosphonic acid), 1-hydroxyethylidene-1,1-diphosphonic acid, ethylenediaminetetra(methylenephosphonic acid), and amine salts and ammonium salts thereof to a target article and drying the coat at 60.degree. to 180.degree. C. for 7 to 60 seconds, said coating film having a glass transition temperature of not lower than 40.degree. C. and an elongation percentage of 2 to 6%.
- 2. A coated article as claimed in claim 1, wherein the water-based coating composition is a water-based rust inhibiting coating composition, said water-based rust inhibiting coating composition further containing 1 to 40 parts by weight of at least one member selected from the group consisting of rust preventive pigments having an electric conductivity of not higher than 600 .mu.S/cm and finely divided silica based on 100 parts by weight, on the solid content basis, of the water-based coating composition.
- 3. A coated article as claimed in claim 2, wherein the water-based rust inhibiting coating composition is a water-based lubricating and rust inhibiting coating composition, said water-based lubricating and rust inhibiting costing composition further containing 3 to 15 parts by weight, on the solid content basis, of a wax based on 100 parts by weight, on the solid content basis, of the water-based rust inhibiting coating composition.
- 4. A coated article as claimed in claim 3, wherein the water-based lubricating and rust inhibiting coating composition is a water-based lubricating and rust inhibiting coating composition for automobiles, said composition for automobiles further containing 0.05 to 25 parts by weight, on the solid content basis, of a melamine cyanurate compound based on 100 parts by weight, on the solid content basis of the water-based lubricating and rust inhibiting coating composition.
- 5. A coated article characterized in that it has a coating film formed by the coating film forming method of applying a water-based coating composition which comprises 100 parts by weight, on the solid content basis, of a composition comprising 100 parts by weight, on the solid content basis, of a self-emulsifying polycarbonate-based polyurethane resin emulsion and 5 to 100 parts by weight, on the solid content basis, of an aqueous resol phenol resin and the water-based coating composition has a pH of 7.0 to 10.0, and further comprising at least one member selected from the group consisting of oxazoline compounds having a glass transition temperature of not lower than 40.degree. C. and containing a styrenic polymer or a styrene-acrylic copolymer, and melamine resins having a curing initiation temperature of not higher than 140.degree. C., the total amount, on the solid contest basis, of said member and the aqueous phenol resin being 10 to 200 parts by weight to a target article and drying the coat at 120.degree. to 180.degree. C. for 7 to 60 seconds, said coating film having a glass transition temperature of not lower than 40.degree. C. and an elongation percentage of 2 to 6%.
- 6. A coated article as claimed in claim 5, wherein the water-based coating composition is a water-based rust inhibiting coating composition, said water-based rust inhibiting coating composition further containing 1 to 40 parts by weight of at least one member selected from the group consisting of rust preventive pigments having an electric conductivity of not higher than 600 .mu.S/cm and finely divided silica based on 100 parts by weight, on the solid content basis, of the water-based coating composition.
- 7. A coated article as claimed in claim 6, wherein the water-based rust inhibiting coating composition is a water-based lubricating and rust inhibiting coating composition, said water-based lubricating and rust inhibiting coating composition further containing 3 to 15 parts by weight, on the solid content basis, of a wax based on 100 parts by weight, on the solid content basis, of the water-based rust inhibiting coating composition.
- 8. A coated article as claimed in claim 7, wherein the water-based lubricating and rust inhibiting coating composition is a water-based lubricating and rust inhibiting coating composition for automobiles, said composition for automobiles further containing 0.05 to 25 parts by weight, on the solid content basis, of a melamine cyanurate compound based on 100 parts by weight, on the solid content basis, of the water-based lubricating and rust inhibiting coating composition.
- 9. A coated article as claimed in claim 1, wherein the target article is a steel sheet or plate or a chromated or unchromated zinc- or zinc alloy-coated sheet or plate.
- 10. A coated article as claimed in claim 5, wherein the target article is a steel sheet or plate or a chromated or unchromated zinc- or zinc alloy-coated sheet or plate.
Priority Claims (3)
Number |
Date |
Country |
Kind |
5-347701 |
Dec 1993 |
JPX |
|
6-45050 |
Feb 1994 |
JPX |
|
6-282631 |
Oct 1994 |
JPX |
|
Parent Case Info
This application is a divisional of U.S. patent application Ser. No. 08/360,024, filed Dec. 20, 1994 now U.S. Pat. No. 5,578,669.
US Referenced Citations (14)
Foreign Referenced Citations (7)
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279441 |
Aug 1988 |
EPX |
554865 |
Aug 1993 |
EPX |
A-25 25 066 |
Dec 1975 |
DEX |
2736542 |
Feb 1978 |
DEX |
A-62 196 963 |
May 1987 |
JPX |
A-63 258 972 |
Oct 1988 |
JPX |
A-3 277 667 |
Dec 1991 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
360024 |
Dec 1994 |
|