Coated abrasive article

• US 6,258,138 B1
• Filed: 05/03/2000
• Issued: 07/10/2001
• Est. Priority Date: 05/01/1998
• Status: Expired due to Term

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Karim, Naimul, DeVoe, Robert J., George, Clayton A., Dahlke, Gregg D., Clausen, Thomas M., Masmar, Craig A.
• Primary Examiner(s): MARCHESCHI, MICHAEL A
• Application Number:
  US09/563,584
• Time in Patent Office: 433 Days
• Field of Search: 512/98, 513/07, 513/09, 512/95
• US Class Current: 51/298
• CPC Class Codes: B24D 18/00 Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
• CPC Class Codes: B24D 3/28 Resins or natural or synthetic macromolecular compounds B24D3/22 takes precedence
• CPC Class Codes: C08G 59/68 characterised by the catalysts used
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C09D 163/00 Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
• CPC Class Codes: Y10S 430/114 Initiator containing
• CPC Class Codes: Y10S 430/115 Cationic or anionic
• CPC Class Codes: Y10T 428/1452 Polymer derived only from ethylenically unsaturated monomer
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/254 Polymeric or resinous material
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2809 including irradiated or wave energy treated component
• CPC Class Codes: Y10T 428/2852 Adhesive compositions
• CPC Class Codes: Y10T 428/31511 Of epoxy ether

Abstract

A coated abrasive article comprises a backing, a first binder on the backing, and a plurality of abrasive particles in the first binder. The first binder precursor is an energy-curable preferably, melt-processable resin containing an epoxy resin, an ethylene-vinyl acetate copolymer, and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The above binder precursors of the invention are preferably free of homopolymers and copolymers of olefinic monomers. In another aspect, the invention also describes an energy curable first binder precursor containing an epoxy resin, an ethylene-vinyl acetate copolymer, a polyfunctional acrylate component and a curing agent for crosslinking the epoxy resin that is cured to provide a crosslinked make coating. The invention also relates to a method of producing such coated abrasive articles and a surface-treated backing material.

Claims

1. A method of preparing a coated abrasive article, comprising the steps of:

(a) providing a backing having a front surface and a back surface;

(b) applying to said front surface of said backing an energy-curable, melt processable first binder precursor, wherein said first binder precursor comprises;

i) an epoxy resin,

ii) a thermoplastic consisting essentially of an ethylene-vinyl acetate, and

iii) a curng agent for crosslinitng said epoxy resin;

(c) exposing said first binder precursor to an energy source to initiate at least partial curing of said first binder precursor;

(d) at least partially embedding a plurality of abrasive particles in said first binder precursor; and

(e) permitting said first binder precursor to sufficiently cure to form a crosslinked coating with said abrasive particles at least partially embedded therein.