Coating composition, treating method and treated substrate

• US 6,261,695 B1
• Filed: 12/17/1998
• Issued: 07/17/2001
• Est. Priority Date: 12/19/1997
• Status: Expired due to Fees

• Current Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Inventors: Kirimoto, Kazusuke
• Primary Examiner(s): Acquah, Samuel A.
• Assistant Examiner(s): RAJGURU, UMAKANT K
• Application Number:
  US09/212,867
• Time in Patent Office: 943 Days
• Field of Search: 524/590, 524/589, 524/591, 524/462, 528/49, 528/70, 528/73, 528/76, 528/80, 528/85, 428/423.4, 428/423.5, 428/423.1, 428/423.7, 428/423.9
• US Class Current: 428/423.7
• CPC Class Codes: C08G 18/2885 containing halogen atoms
• CPC Class Codes: C09D 175/04 Polyurethanes
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31558 Next to animal skin or membrane
• CPC Class Codes: Y10T 428/31562 Next to polyamide [nylon, etc.]
• CPC Class Codes: Y10T 428/31565 Next to polyester [polyethylene terephthalate, etc.]
• CPC Class Codes: Y10T 428/31569 Next to natural rubber

Abstract

A coating composition comprising a fluorine-containing compound of the following formula 1, a polyisocyanate, water and an organic solvent:

R^f—Q—A  1

wherein R is a monovalent fluorine-containing organic group having from 2 to 20 carbon atoms, Q is a single bond or a bivalent linking group, and A is a group having a hydrogen atom reactive with an isocyanate group.

Claims

1. A coating composition comprising a fluorine-containing compound of the following formula 1, at least one polyisocyanate, water and at least one organic solvent:

2. The composition according to claim 1, wherein the coating composition further contains at least one polyol.

3. The composition according to claim 1, wherein A in the fluorine-containing compound of the formula 1 is a hydroxyl group.

4. The composition according to claim 1, wherein the fluorine-containing compound of the formula 1 is a compound containing a perfluoroalkyl group having from 8 to 14 carbon atoms.

5. The composition according to claim 1, wherein the polyisocyanate is an isocyanurate-modified product or a prepolymer-modified product of an aliphatic diisocyanate, or crude diphenylmethane diisocyanate.

6. The composition according to claim 1, wherein the coating composition further contains at least one polyol.

7. The composition according to claim 6, wherein A in the fluorine-containing compound of the formula 1 is a hydroxyl group.

8. The composition according to claim 6, wherein the fluorine-containing compound of the formula 1 is a compound containing a perfluoroalkyl group having from 8 to 14 carbon atoms.

9. The composition according to claim 6, wherein the polyisocyanate is an isocyanurate-modified product or a prepolymer-modified product of an aliphatic diisocyanate, or crude diphenylmethane diisocyanate.

10. The composition according to claim 1, wherein A in the fluorine-containing compound of the formula 1 is a hydroxyl group.

11. The composition according to claim 10, wherein the fluorine-containing compound of the formula 1 is a compound containing a perfluoroalkyl group having from 8 to 14 carbon atoms.

12. The composition according to claim 10, wherein the polyisocyanate is an isocyanurate-modified product or a prepolymer-modified product of an aliphatic diisocyanate, or crude diphenylmethane diisocyanate.

13. The composition according to claim 1, wherein the fluorine-containing compound of the formula 1 is a compound containing a perfluoroalkyl group having from 8 to 14 carbon atoms.

14. The composition according to claim 13, wherein the polyisocyanate is an isocyanurate-modified product or a prepolymer-modified product of an aliphatic diisocyanate, or crude diphenylmethane diisocyanate.

15. The composition according to claim 1, wherein in the coating composition, the amount of the fluorine-containing compound is from 0.001 to 15 wt % to the organic solvent, and the amount of the polyisocyanate is from 0.1 to 1×

10⁴ wt % to the fluorine-containing compound.

16. A method for treating a substrate surface, which comprises coating the composition as defined in claim 1 on a substrate surface, and after removing the solvent, reacting the fluorine-containing compound of the formula 1 and the polyisocyanate by air-drying on the substrate surface.

17. A substrate treated by the treating method as defined in claim 16.

18. The substrate according to claim 17, wherein the substrate is a substrate made of a synthetic resin, an elastomer, a metal, a plant structural material, a ceramics or a stone material.