Patent ID: 6500220
Filing Date: 2002-12-31
Classification: B24D

Abstract:
A vitreous bonded abrasive article comprising a plurality of abrasive grains, a vitreous matrix binding together the abrasive grains and having distributed therein a plurality of open pores, at least a portion of said pores containing as an impregnant therein a grinding aid wherein said impregnant comprises at least one water insoluble, sulfur bearing organic substance said substance having at least one carbon to sulfur bond, at least about 5% by weight sulfur and a melting point of at least about 30Â° C. said melting point being at least 10Â° C. below the decomposition temperature of the substance and selected from the group consisting of substituted and unsubstituted aliphatic, aromatic, cycloaliphatic, alkenyl, alkynyl, alkylaryl, arylalkyl and substituted heterocyclic sulfur bearing organic substances or a mixture of said substances, said impregnant being free of a medium, other than said substance, in which said substance or mixture of said substances is dissolved or dispersed.