Coated abrasive backings with cloth treated with colloidal silicon oxide

• US 8,940,063 B2
• Filed: 12/23/2010
• Issued: 01/27/2015
• Est. Priority Date: 12/29/2009
• Status: Expired due to Fees

• Current Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain), Saint-Gobain Abrasifs (Compagnie de Saint-Gobain SA)
• Original Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain), Saint-Gobain Abrasifs (Compagnie de Saint-Gobain SA)
• Inventors: Yang, Yu Xiang, Seshu, Adiseshaiah K., Feng, Lin Hua
• Primary Examiner(s): MCDONOUGH, JAMES E
• Application Number:
  US12/977,963
• Publication Number:
  US 20110162286A1
• Time in Patent Office: 1,496 Days
• Field of Search: 512/98, 512/93, 513/07, 513/08
• US Class Current: 51/298
• CPC Class Codes: B24D 11/001 Manufacture of flexible abrasive materials
• CPC Class Codes: B24D 11/02 Backings, e.g. foils, webs, mesh fabrics
• CPC Class Codes: B24D 3/004 with special coatings
• CPC Class Codes: Y10T 442/2738 Coating or impregnation intended to function as an adhesive to solid surfaces subsequently associated therewith

Abstract

A cloth backing for an abrasive article is treated by combining a phenolic resin, a latex and a colloidal silicon oxide composition to prepare a colloidal formulation, which is then applied to the cloth backing and cured. Coated abrasive articles are formed by applying a make coat formulation to the treated cloth backing, applying an abrasive and then curing the make coat formulation.

Claims

1. A method of forming a treated cloth backing comprising:

mixing a phenolic resin, a latex, and a colloidal silicon oxide composition to form a colloidal formulation;

applying the colloidal formulation directly to a cloth backing; and

curing the colloidal formulation to form the treated cloth backing.

2. The method of claim 1, wherein applying the colloidal formulation directly to the cloth backing comprises coating the cloth backing.

3. The method of claim 1, wherein applying the colloidal formulation directly to the cloth backing comprises saturating the cloth backing.

4. The method of claim 1, wherein the colloidal formulation comprises about 1% to 10% colloidal silicon oxide composition by weight of the colloidal formulation.

5. The method of claim 4, wherein the colloidal formulation comprises about 2% to 6% colloidal silicon oxide composition by weight of the colloidal formulation.

6. The method of claim 1, wherein the colloidal formulation comprises about 30% to about 90% latex by weight of the colloidal formulation.

7. The method of claim 1, wherein the colloidal formulation comprises about 10% to 50% phenolic resin by weight of the colloidal formulation.

8. The method of claim 1, wherein the colloidal silicon oxide composition has a colloid particle size in a range of between about 2 nanometers and about 200 nanometers.

9. The method claim 1, wherein the phenolic resin is at least one member of the group consisting of a resole, a resole modified with a glycol, a diphenolic resin, and a polyphenolic resin.

10. The method of claim 1, wherein the latex is at least one member of the group consisting of acrylic latex, butadiene-acrylonitrile latex, and styrene-butadiene latex.

11. The method of claim 1, wherein the cloth backing comprises at least one material selected from the group consisting of polycotton, cotton, polyester, and nylon.

12. The method of claim 1, wherein the cloth backing comprises polycotton.

13. The method of claim 1, wherein the colloidal formulation is applied in an amount of about 10 grams per square meter to about 120 grams per square meter of the cloth backing material.

14. The method of claim 1, wherein the colloidal formulation comprises

about 1 to 10 wt % colloidal silicon oxide composition,

about 30 to 90 wt % latex, and

about 10 to 50 wt % phenolic resin.

15. The method of claim 14, wherein the colloidal formulation is applied in an amount of about 10 grams per square meter to about 120 grams per square meter of the cloth backing material.

16. The method of claim 1, wherein the mixing of the phenolic resin, the latex, and the colloidal silicon oxide composition to form a colloidal formulation comprises:

mixing together the latex and the colloidal silicon oxide composition to form a mixture; and

mixing the phenolic resin with the mixture to form the colloidal formulation.

17. The method of claim 1, wherein the colloidal silicon oxide composition comprises nano sized silicon oxide, water, and dispersant.

18. The method of claim 17, wherein the colloidal silicon oxide composition has a colloidal particle size in a range of 2 nanometers to 200 nanometers.