Patent ID: 7300479

Claim:
A structured abrasive article comprising: (a) a backing having a front face; (b) a plurality of abrasive composites on the front face, each of the abrasive composites comprising: (i) a plurality of ceramic aluminum oxide abrasive particles having an average particle size of about 300-400 micrometers; (ii) an organic constituent comprising radiation curable binder, the organic constituent occupying 15-40 wt-% of the abrasive composite; the composites having a height, measured from the front face of the backing, 635-1016 micrometers; and (iii) faces that are defined at least partially by a parabolic function; wherein the abrasive article produces a first cut rate and a first surface finish at a first time and a second cut rate and a second surface finish at a second time, the first time and the second time being separated by at least 20 minutes; wherein the second cut rate is no greater than 50% less than the first cut rate.