METHOD OF APPLYING SILANES TO METAL IN AN OIL BATH CONTAINING A CONTROLLED AMOUNT OF WATER

• US 20090229724A1
• Filed: 03/14/2008
• Published: 09/17/2009
• Est. Priority Date: 03/14/2008
• Status: Active Grant

• Current Assignee: Ecosil Technologies, LLC
• Original Assignee: Ecosil Technologies, LLC
• Inventors: Hill, Michael
• Granted Patent: US 7,972,659 B2
• Time in Patent Office: Days
• US Class Current: 152/451
• CPC Class Codes: C08G 77/26 nitrogen-containing groups
• CPC Class Codes: C08G 77/28 sulfur-containing groups
• CPC Class Codes: C09D 183/08 containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
• CPC Class Codes: D07B 1/0666 the wires being characterised by an anti-corrosive or adhesion promoting coating
• CPC Class Codes: D07B 2201/2012 comprising polymers
• CPC Class Codes: D07B 2205/20 Organic high polymers
• CPC Class Codes: D07B 2801/18 Coating
• CPC Class Codes: D07B 7/145 Coating or filling-up interstices

Abstract

Organofunctional silanes are applied to metal surfaces using an oil bath. Metal is immersed in an oil bath containing approximately 2% silane and an oil dispersible hygroscopic liquid, such as glycerol. In one embodiment, the metal is a tire cord. Water vapor entrained in a carrier gas can also be bubbled into the oil silane bath.

Claims

1. A method of applying a silane coating onto a metal substrate comprising contacting said metal substrate with an oil mixture, said oil mixture comprising a blend of an oil, and an organofunctional silane wherein an amount of water effective to improve the adhesion of said organofunctional silane to said metal substrate is added to said oil mixture.

2. The method claimed in claim 1 wherein water is added to said oil mixture by adding a hygroscopic material to said oil mixture.

3. The method claimed in claim 2 wherein said metal substrate is wire and said wire is drawn through said oil mixture.

4. The method claimed in claim 2 wherein said organofunctional silane includes an amino silane.

5. The method claimed in claim 4 wherein in said amino silane is a bis-aminosilane.

6. The method claimed in claim 2 wherein said organofunctional silane comprises at least about 2% by weight of said oil mixture.

7. The method claimed in claim 4 wherein said organofunctional silane comprises amino silane and polysulfur silane.

8. The method claimed in claim 7 wherein said organofunctional silane has a ratio by weight of amino silane:

polysulfur silane of 1;

3 to 3;

1.

9. The method claimed in claim 2 wherein said hygroscopic compound is glycerol.

10. The method claimed in claim 1 wherein unhydrolyzed organofunctional silane is added to said oil mixture.

11. The method claimed in claim 1 wherein water vapor entrained in a carrier gas is bubbled into said oil mixture to add said water to said oil mixture.

12. The method claimed in claim 1 wherein said oil is a naphthenic lubricating oil.

13. The method claimed in claim 1 wherein said oil is a paraffinic lubricating oil.

14. The method claimed in claim 1 wherein said metal substrate is cleaned with an alkaline cleaner.

15. A tire cord coated with a mixture of silane, oil and a hygroscopic compound dispersible in said oil.

16. A method of coating a tire cord comprising running said cord through an oil bath containing at least one silane and bubbling water vapor entrained in air through said oil bath.

17. A method of applying a silane coating onto a metal substrate comprising contacting said metal substrate with an oil mixture, said oil mixture comprising a blend of an oil, an organofunctional silane, and an oil dispersible hygroscopic liquid compound.