ADDITION OF SILANES TO COATING COMPOSITIONS

• US 20080026151A1
• Filed: 07/27/2007
• Published: 01/31/2008
• Est. Priority Date: 07/31/2006
• Status: Abandoned Application

• Current Assignee: Ecosil Technologies, LLC
• Original Assignee: Ecosil Technologies, LLC
• Inventors: Van Ooij, William, Zhu, Danqing
• Application Number:
  US11/829,509
• Publication Number:
  US 20080026151A1
• Time in Patent Office: Days
• US Class Current: 427/327
• CPC Class Codes: C08G 18/718 containing silicon
• CPC Class Codes: C09D 5/086 Organic or non-macromolecular compounds

Abstract

A coating composition for use on a cleaned but untreated metal surfaces includes a liquid polymerizable coating composition such as a urethane paint, or the like, blended with an organofunctional silane. The organofunctional silane can be a bis-functional monomeric or an oligomeric silane such as a silsesquioxane. The composition can be applied directly to an untreated metal surface. The silane in the coating composition improves adhesion of the coating composition and deters corrosion.

Claims

1. A coating composition comprising a polymerizable coating composition in combination with a silane compound;

said silane compound comprising an organofunctional silane selected from the group consisting of bis-functional silanes, polysulfur silanes, blends of amino silanes and vinyl silanes, vinyl silanes, glycidal silanes, ureido silanes and isocyanato silanes, and combinations thereof.

2. The coating composition claimed in claim 1 wherein said bis-functional silane compound comprises from 0.01 to 5% by volume of said coating composition.

3. The coating composition claimed in claim 2 wherein said silane is a bis-functional silane.

4. The coating composition claimed in claim 1 wherein said silane comprises a mixture of silanes.

5. A metal surface coated with the coating composition of claim 1.

6. The metal surface claimed in claim 5 wherein said metal surface is not pretreated with a phosphate, zirconium, or chromium pretreatment.

7. The composition claimed in claim 1 further comprising a corrosion inhibitor.

8. The composition claimed in claim 7 wherein said corrosion inhibitor is selected from the group consisting of molybdates, phosphomolybdates, phosphosilicates, borosilicates, benzotriazole and sodium metavanadate.

9. A method of coating a metal surface comprising cleaning said metal surface to form a cleaned metal surface, applying to said cleaned metal surface, and without prior pretreatment for corrosion inhibition, a coating composition comprising a polymerizable coating composition in combination with a silane compound

said silane compound comprising an organofunctional silane selected from the group consisting of monomeric silanes, oligomeric silanes, and combinations thereof.

10. The method claimed in claim 9 wherein said silane compound comprises 0.01 to 5% by volume of said coating composition.

11. The method claimed in claim 9 wherein said silane includes one or more organofuntional groups selected from the groups consisting of amino, vinyl, sulfur, urethane, epoxy, methacril, isocyanate and acryl functionalities.

12. The method claimed in claim 9 wherein said silane is a bis-functional silane.

13. The method claimed in claim 9 wherein said silane comprises a mixture of vinyl and amino silanes.

14. The method claimed in claim 9 wherein said silane is a silsesquioxane.

15. The method claimed in claim 14 wherein said silsequioxane includes an organofunctional group selected from the group consisting of amino, vinyl, urethane, isocyanato and sulfur.