Coated abrasive article
First Claim
1. A coated abrasive article, comprising:
- a) a backing having a front surface and a back surface;
b) a crosslinked first binder on said front surface of said backing, wherein said first binder is formed from a first binder precursor, said first binder precursor is an energy-curable composition formed by mixing components comprising;
i) about 30 to about 95 weight percent of an epoxy resin,ii) about 5 to about 70 weight percent of an ethylene-vinyl acetate copolymer resin wherein the sum of i and ii is 100 weight percent, andiii) an effective amount of a curing agent for crosslinking said epoxy resin; and
c) a plurality of abrasive particles, wherein said abrasive particles are at least partially embedded in said first binder.
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Accused Products
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.
117 Citations
38 Claims
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1. A coated abrasive article, comprising:
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a) a backing having a front surface and a back surface; b) a crosslinked first binder on said front surface of said backing, wherein said first binder is formed from a first binder precursor, said first binder precursor is an energy-curable composition formed by mixing components comprising; i) about 30 to about 95 weight percent of an epoxy resin, ii) about 5 to about 70 weight percent of an ethylene-vinyl acetate copolymer resin wherein the sum of i and ii is 100 weight percent, and iii) an effective amount of a curing agent for crosslinking said epoxy resin; and c) a plurality of abrasive particles, wherein said abrasive particles are at least partially embedded in said first binder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A coated abrasive article, comprising:
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a) a backing having a front surface and a back surface; b) a crosslinked first binder on said front surface of said backing, wherein said first binder is formed from a first binder precursor, said first binder precursor is an energy-curable composition formed by mixing components comprising; i) about 30 to about 95 weight percent of an epoxy resin, ii) about 5 to about 70 weight percent of thermoplastic, said thermoplastic consisting essentially of an ethylene-vinyl acetate copolymer resin, wherein the sum of i and ii is 100 weight percent, and iii) an effective amount of a curing agent for crosslinking said epoxy resin; and c) a plurality of abrasive particles, wherein said abrasive particles are at least partially embedded in said first binder.
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29. A coated abrasive article, comprising:
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a) a backing having a front surface and a back surface; b) a crosslinked first binder on said front surface of said backing, wherein said first binder is formed from a first binder precursor, said first binder precursor is an energy-curable composition formed by mixing components comprising; i) about 2 to about 98 weight percent of an epoxy resin, ii) about 1 to about 90 weight percent of an ethylene-vinyl acetate copolymer resin, iii) about 0.1 to about 20 weight percent of a polyfunctional acrylate component the sum of i, ii, and iii is 100 weight percent, and iv) an effective amount of a curing agent for crosslinking said epoxy resin; and c) a plurality of abrasive particles, wherein said abrasive particles are at least partially embedded in said first binder. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification