Abstract: A coated abrasive article having an abrasive layer formed from alumina-zirconia (AZ) abrasive particles and glass diluent particles was found to have excellent grinding performance when compared to abrasive layers formed from 100 percent AZ particles or a blend of 60 percent AZ particles and 40 percent aluminum oxide particles. Replacing the significantly harder aluminum oxide particles with the much softer glass particles while still being able to maintain the same performance of the abrasive disc was an unexpected result.

Abstract: Coated abrasive articles have a tie layer that is preparable by at least partially polymerizing an isotropic polymerizable composition comprising a polyfunctional aziridine, an acidic free-radically polymerizable monomer, and an oligomer having at least two pendant free-radically polymerizable groups, wherein homopolymerization of the oligomer results in a polymer having a glass transition temperature of less than 50 degrees Celsius.

Abstract: Coated abrasive articles have a composite tie layer. The composite tie layer is preparable by disposing a first polymerizable composition comprising a polyfunctional aziridine on a backing, and disposing a second polymerizable composition comprising at least one acidic free-radically polymerizable monomer and at least one oligomer having at least two pendant free-radically polymerizable groups on the first polymerizable composition, at least partially polymerizing the first and second polymerizable compositions, wherein homopolymerization of the oligomer results in a polymer having a glass transition temperature of less than 50 degrees Celsius.

Abstract: The present invention provides abrasive articles having projections attached to a major surface thereof, and methods of making such articles. The articles include (1) a reaction product of components that include (a) an epoxy-functional material, (b) at least one of a cyclic anhydride or a diacid derived therefrom; and/or (2) a polymeric material preparable by combining at least (a) an epoxy-functional material, and (b) at least one of a cyclic anhydride or a diacid derived therefrom.

Abstract: The present invention provides discrete particles and methods of preparing the discrete particles. The discrete particles include a plurality of abrasive grits and a polymeric material that includes a reaction product of components including (a) an epoxy-functional material, (b) at least one of a cyclic anhydride or a diacid derived therefrom, and optionally (c) a polyfunctional (meth)acrylate. The invention also provides articles made from the discrete particles and methods of making such articles. Preferably, the articles are abrasive articles.

Abstract: The present invention provides discrete particles and methods of preparing the discrete particles. The discrete particles include a plurality of abrasive grits and a polymeric material that includes a reaction product of components including (a) an epoxy-functional material, (b) at least one of a cyclic anhydride or a diacid derived therefrom, and optionally (c) a polyfunctional (meth)acrylate. The invention also provides articles made from the discrete particles and methods of making such articles. Preferably, the articles are abrasive articles.

Abstract: The present invention provides abrasive articles having projections attached to a major surface thereof, and methods of making such articles. The articles include (1) a reaction product of components that include (a) an epoxy-functional material, (b) at least one of a cyclic anhydride or a diacid derived therefrom; and/or (2) a polymeric material preparable by combining at least (a) an epoxy-functional material, and (b) at least one of a cyclic anhydride or a diacid derived therefrom.

Abstract: This invention provides an abrasive article comprising abrasive agglomerate particles and a bond system. The abrasive agglomerate particles comprise a plurality of abrasive grains bonded together by means of a first binder. The abrasive agglomerate particles can be bonded to a backing by means of a first bond system. The first bond system comprises a second binder and a plurality of hard, inorganic particulates dispersed therein. A second bond system may be applied over the abrasive agglomerate particles. The second bond system comprises a third binder and a plurality of hard inorganic particulates dispersed therein. The bond systems of the invention are generally made by combining at least a curable binder precursor with hard, inorganic particulates. The invention also provides methods of making and using the above abrasive articles.