Patent ID: 7344574
Filing Date: 2008-03-18
Classification: B24D,C08L

Abstract:
1. A coated abrasive article comprising a backing having a major surface, a backing treatment secured to at least a portion of the major surface, an abrasive layer secured to at least a portion of the backing treatment, the abrasive layer comprising abrasive particles and a binder resin, wherein the backing treatment is preparable by at least partially polymerizing an isotropic backing treatment precursor comprising, based on the total weight of components a) to g): a) from 1 to 12 percent of at least one polyepoxide preparable by reaction of epichlorohydrin with at least one of bisphenol A or bisphenol F; b) from 70 to 90 percent of at least one polyfunctional urethane (meth)acrylate, wherein homopolymerization of the polyfunctional urethane (meth)acrylate results in a polymer having a glass transition temperature of less than 50 degrees Celsius; c) from 1 to 10 percent of at least one non-urethane polyfunctional (meth)acrylate; d) from 1 to 10 percent of at least one acidic free-radically polymerizable monomer; e) dicyandiamide; f) photoinitiator; and g) optional epoxy cure catalyst.