Patent ID: 7150770

Claim:
A coated abrasive article comprising a backing having a major surface, a tie layer secured to at least a portion of the major surface, an abrasive layer secured to at least a portion of the tie layer, the abrasive layer comprising abrasive particles and at least one binder resin, wherein the tie layer is preparable by at least partially free-radically polymerizing an isotropic polymerizable composition comprising, based on the total weight polyfunctional aziridine, acidic free-radically polymerizable monomer, and oligomer having at least two pendant free-radically polymerizable groups; at least 0.5 percent of at least one polyfunctional aziridine, at least 1 percent of at least one acidic free-radically polymerizable monomer, and at least 30 percent of at least one oligomer having at least two pendant free-radically polymerizable groups, wherein homopolymerzation of the oligomer results in a polymer having a glass transition temperature of less than 50 degrees Celsius.