Abrasive article having vanadium oxide incorporated therein

• US 5,203,884 A
• Filed: 06/04/1992
• Issued: 04/20/1993
• Est. Priority Date: 06/04/1992
• Status: Expired due to Fees

• Current Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Original Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Inventors: Morrison, Eric D., Kausch, William L., Hedrick, Steven T., Larson, Wayne K., Boston, David R., Buchanan, Scott J.
• Primary Examiner(s): Bell, Mark L.
• Assistant Examiner(s): THOMPSON, WILLIE
• Application Number:
  US07/893,491
• Time in Patent Office: 320 Days
• Field of Search: 51/293, 51/295, 51/298, 51/307, 51/308, 51/309, 525/255
• US Class Current: 51/295
• CPC Class Codes: B24D 3/28 Resins or natural or synthetic macromolecular compounds B24D3/22 takes precedence

Abstract

An abrasive article (i.e., a coated abrasive article or a three-dimensional, low density abrasive article) having a sufficient amount of vanadium oxide incorporated therein to provide having a reduced tendency to buildup static electricity during the abrading of a workpiece. Preferably, the abrasive article further comprises a compatible binder (preferably, a sulfonated polymer) to aid in securing the vanadium oxide to the abrasive article. In another aspect, a method of making the same is taught.

Claims

1. A coated abrasive article comprising:

(a) a backing having a front surface;

(b) an abrasive layer bonded to said front surface of said backing to provide a coated abrasive article, said abrasive layer comprising abrasive grain and a cured bond system; and

(c) vanadium oxide incorporated into said coated abrasive article, wherein said vanadium oxide is present in an amount sufficient to reduce the accumulation of static electric charge during the abrading of a workpiece with said coated abrasive article.

2. The coated abrasive article according to claim 1 wherein said backing further comprises a back surface and said abrasive layer further comprises a top surface, and wherein said vanadium oxide is at least one of:

(i) coated on said back surface of said backing;

(ii) incorporated into said backing;

(iii) coated onto said front surface of said backing;

(iv) incorporated into said abrasive layer; and

(v) coated onto said top surface of said abrasive layer.

3. The coated abrasive article according to claim 1 wherein said vanadium oxide comprises at least one of vanadium(+4) or vanadium(+5) oxidation states.

4. The coated abrasive article according to claim 1 further comprising a sulfopolymer in contact with said vanadium oxide.

5. The coated abrasive article according to claim 4 wherein said sulfonated polymer is selected from the group consisting of a sulfopolyester, a sulfopolyurethane, a sulfopolyurethane-urea, an ethylenically-unsaturated sulfopolymer, a sulfopolyester polyol, a sulfopolyol, and combinations thereof.

6. The coated abrasive article according to claim 4 wherein said sulfonated polymer is a sulfopolyester.

7. The coated abrasive article according to claim 4 wherein the weight ratio of said vanadium oxide to said sulfonated polymer is in the range from about 1:

499 to about 1;

1.

8. The coated abrasive article according to claim 4 wherein the weight ratio of said vanadium oxide to said sulfonated polymer is in the range from about 1:

499 to about 1;

4.

9. The coated abrasive article according to claim 4 wherein said vanadium oxide is dispersed in said sulfonated polymer to provide a layer comprising said vanadium oxide and said sulfonated polymer.

10. The coated abrasive article according to claim 4 wherein said sulfonated polymer is coated over said vanadium oxide.

11. The coated abrasive article according to claim 1 further comprising a layer comprising said vanadium oxide, said backing having a back surface, and said abrasive layer having a top surface, wherein layer comprising said vanadium oxide is coated onto at least one said back surface of said backing and said top surface of said abrasive layer.

12. The coated abrasive article according to claim 1 further comprising a supersize layer and said abrasive layer having a top surface, wherein said supersize layer is coated onto said top surface of said abrasive layer.

13. The coated abrasive article according to claim 12 wherein said supersize layer has a top surface and said vanadium oxide is coated onto said top surface of said supersize layer.

14. The coated abrasive article according to claim 12 wherein said supersize layer comprises a material selected from the group consisting of metal salts of fatty acids, urea-formaldehyde, novolak phenolic resins, waxes, mineral oils, and fluorochemicals.

15. The coated abrasive article according to claim 1 wherein said bond system is formed from materials selected from the group consisting of phenolic resins, urea-formaldehyde resins, melamine-formaldehyde resin, aminoplast resins, isocyanate resins, polyester resins, epoxy resins, acrylate reins, urethane resins, hide glue, and combinations thereof.

16. The coated abrasive article according to claim 1 wherein said backing is selected from the group consisting of paper, polymeric film, fiber, nonwoven fibrous material, cloth, treated versions thereof, and combinations thereof.

17. The coated abrasive article according to claim 1 wherein said abrasive grain is selected from the group consisting of fused aluminum oxide, co-fused alumina-zirconia, silicon carbide, diamond, cubic boron nitride, ceria, garnet, boron carbide, silica, silicon nitride, and combinations thereof.

32. The coated abrasive article according to claim 1 wherein said abrasive grain is ceramic aluminum oxide.

18. A three-dimensional, low density abrasive article comprising

(a) a three-dimensional, low density web structure;

(b) abrasive grain;

(c) a bond system that serves to bond said abrasive grain to said web structure;

(d) vanadium oxide incorporated into said three-dimensional, low density abrasive article, wherein said vanadium oxide is present in an amount sufficient to reduce the accumulation of static electric charge during the abrading of a workpiece with said three-dimensional, low density abrasive article.

19. The three-dimensional, low density abrasive article according to claim 18 wherein said vanadium oxide comprises at least one of vanadium(+4) or vanadium(+5) oxidation states.

20. The three-dimensional, low density abrasive article according to claim 18 further comprising a sulfopolymer in contact with said vanadium oxide.

21. The three-dimensional, low density abrasive article according to claim 20 wherein said sulfonated polymer is selected from the group consisting of a sulfopolyester, a sulfopolyurethane, a sulfopolyurethane-urea, an ethylenically-unsaturated sulfopolymer, a sulfopolyester polyol, a sulfopolyol, and combinations thereof.

22. The three-dimensional, low density abrasive article according to claim 20 wherein said sulfonated polymer is a sulfopolyester.

23. The three-dimensional, low density abrasive article according to claim 20 wherein the weight ratio of said vanadium oxide to said sulfonated polymer is in the rang from about 1:

499 to about 1;

1.

24. A method of making a coated abrasive article, said method comprising the steps of:

(a) providing a backing having a front surface;

(b) applying an abrasive layer to said front surface of said backing to provide a coated abrasive article, said abrasive layer comprising a bond system capable of being cured and abrasive grain;

(c) incorporating into said coated abrasive article a sufficient amount of vanadium oxide to provide a coated abrasive article having a reduced tendency to accumulate static electric charge during the abrading of a workpiece; and

(d) curing said curable bond system.

25. The method according to claim 24 wherein said backing has a back surface and said abrasive layer has a top surface, and said method further comprises the step of applying a layer comprising said vanadium oxide onto at least one said back surface of said backing and said top surface of said abrasive layer.

26. The method according to claim 24 wherein said abrasive layer has a top surface, and said method further comprises the step of applying a supersize layer onto said top surface of said abrasive layer.

27. The method according to claim 24 wherein said vanadium oxide is dispersed in a sulfonated polymer and incorporated into said coated abrasive article as a layer comprising said vanadium oxide and said sulfonated polymer.

28. The method according to claim 24 wherein said vanadium oxide is incorporated into said coated abrasive article as a layer, and said method further comprises the step of coating a sulfonated polymer over said layer of said vanadium oxide.

29. A method making a three-dimensional, low density abrasive article, said method comprising the steps of:

(a) providing a three-dimensional, low density web structure;

(b) appying a curable bond system and abrasive grain to said web structure;

(c) incorporating into said three-dimensional, low density abrasive article a sufficient amount of vanadium oxide to provide a three-dimensional, low density abrasive article having a reduced tendency to accumulate static electric charge during the abrading of a workpiece; and

(d) curing said curable bond system.

30. The method according to claim 29 wherein said vanadium oxide is dispersed in a sulfonated polymer and incorporated into said three-dimensional, low density abrasive article as a layer comprising said vanadium oxide and said sulfonated polymer.

31. The method according to claim 29 wherein said vanadium oxide is incorporated into said three-dimensional, low density abrasive article as a layer, and said method further comprises the step of coating a sulfonated polymer over said layer of said vanadium oxide.