Patent Number: 6,251,149

Title: Abrasive grinding tools with hydrated and nonhalogenated inorganic grinding aids

Abstract: A bonded-abrasive tool includes a matrix of an organic bond, abrasive grains dispersed in the organic bond and a grinding aid in the form of either an inorganic nonhalogenated filler or a hydrated filler. The inorganic nonhalogenated filler can react with free radicals released from the organic bond during grinding. The hydrated filler endothermically releases water. A coated-abrasive tool includes a flexible substrate, abrasive grains bonded to the flexible substrate, and an organic bond containing a grinding aid including an inorganic nonhalogenated filler or a hydrated filler coated on the substrate.

Inventors: Meyer; Gerald W. (Framingham, MA), Johnson; Paul E. (Worcester, MA)

Assignee: Norton Company

International Classification: B24D 3/34 (20060101); B24D 11/00 (20060101); B24D 003/28 (); B24D 003/34 ()

Expiration Date: 06/26/2018