Abrasive wheel composition

Claim 1

THE METHOD OF MAKING A RESIN-BONDED ABRASIVE PRODUCT HAVING A RELATIVELY HIGH RATIO OF BOND TO ABRASIVE AND A RELATIVELY LOW VOLATILE CONTENT WHICH COMPRISES WETTING THE SURFACES OF GRANULES OF AN ABRASIVE MATERIAL WITH A BOND-ADHESION-PROMOTING AGENT SELECTED FROM THE GROUP CONSISTING OF SAID CONDENSATION RESIN IN LIQUID FORM, AN ORGANIC SOLVENT HAVING AN APPRECIABLE SOLVENT POWER, FOR SAID CONDENSATION RESIN AND MIXTURES OF SAID LIQUID RESIN AND SOLVENT, MIXING WITH THE WETTED GRANULES A FIRST PORTION OF SAID FILLED CONDENSATION RESIN IN DRY POWDER, FORM TO CAUSE SAID GRANULES TO BE COATED WITH SAID DRY RESIN, ADDING WATER TO THE RESULTING MIXTURE TO WET THE COATED GRANULES AND ANY EXCESS OF RESIN POWDER THAT MAY BE PRESENT IN THE MIXTURE, INCORPORATING A SECOND PORTION OF SAID DRY POWDER RESIN IN THE RESULTING MIXTURE TO INCREASE THE THICKNESS OF THE RESIN COATING ON SAID GRANULES, THE QUANTITY OF SAID ADDED WATER BEING SUFFICIENT TO CAUSE SAID SECOND PORTION OF POWDERED RESIN TO ADHERE TO SAID COATED GRANULES, VAPORIZING THE ADDED WATER FROM SAID COATED GRANULES AND MOLDING SAID GRANULES TO FORM SAID RESIN-BONDED ABRASIVE PRODUCT.