Patent ID: 6245406
Filing Date: 2001-06-12
Classification: B24B,B24D,C09K,Y10T

Abstract:
An abrasive polishing disc comprising at least one abrasive shaped polishing article and a supporting auxiliary; said shaped polishing article being a molded article made by molding a silica powder and fitted to the supporting auxiliary, and comprising at least 90% by weight, based on the absolute dry weight of the abrasive shaped polishing article, of silica and having a bulk density of 0.2 g/cm.sup.3 to 1.5 g/cm.sup.3, a BET specific surface area of 10 m.sup.2 /g to 400 m.sup.2 /g and an average particle diameter of 0.001 .mu.m to 0.5 .mu.m.