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US 6,475,253 B2Granted
Abrasive article and method of making
Assignee3M Innovative Properties Company
InventorsScott R. Culler, John J. Gagliardi, Thomas W. Larkey, Eric G. Larson, Larry L. Martin, Jeffrey W. Nelson
Life of this patent
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Abstract
This invention pertains to a coated, bonded or non-woven abrasive article containing precisely shaped particles and a binder. These precisely shaped particles can contain abrasive grits, fillers, grinding aids and lubricants. The binder is preferably a mixture of a resole phenolic resin and a free radical curable resin, resulting in improved cutting and life span. Also disclosed is a method of forming the coated, bonded or non-woven abrasive article.
Claims21
A coated abrasive article, comprising:
- (a) a backing having a front and back surface;
- (b) a make coat present on the front surface of the backing,
- (c) a plurality of precisely shaped abrasive particles bonded to the front surface of the backing by means of said make coat, wherein the precisely shaped abrasive particles comprise a plurality of abrasive grits distributed in a binder, wherein the binder is formed from a binder precursor comprising a blend of a resole phenolic resin and a free radical curable resin, and wherein the resole phenolic resin is present in an amount of from 30 to 50 weight percent, based on the total weight of resole phenolic resin and free radical curable resin;
- and
- (d) a size coat present over the precisely shaped abrasive particles.
2 more elements
A bonded abrasive article, comprising:
- (a) a bonding medium;
- (b) a plurality of precisely shaped abrasive particles wherein the precisely shaped abrasive particles comprise a plurality of abrasive grits distributed in a binder, wherein the binder is formed from a binder precursor comprising a blend of a resole phenolic resin and a free radical curable resin, and wherein the resole phenolic resin is present is an amount of from 30 to 50 weight percent, based on the total weight of resole phenolic resin and free radical curable resin;
- and wherein the bonding medium forms a shaped ass of the precisely shaped abrasive particles.
Dependencies are inferred from the claim text.