Patent ID: 8066786
Filing Date: 2011-11-29
Classification: B24D,B32B,Y10T

Abstract:
1. A coated abrasive disc comprising an abrasive layer secured to a backing, wherein the backing comprises: a synthetic woven fabric having a first major surface with a presize disposed on at least a portion thereof and a second major surface opposite the first major surface and having a backsize disposed on at least a portion thereof, wherein the presize comprises a reaction product of a curable presize precursor comprising, based on the total weight of components (a) to (f): (a) from 50 to 90 percent by weight of at least one epoxy resin prepared by reaction of epichlorohydrin with at least one of bisphenol A or bisphenol F; (b) from 1 to 20 percent by weight of at least one polyfunctional (meth)acrylate; (c) from 1 to 10 percent of at least one novolac resin; and an effective amount of (d) imidazole epoxy cure catalyst, (e) dicyandiamide, and (f) photoinitiator; a glass woven fabric permeated with an at least partially crosslinked saturant; and a thermoplastic laminating adhesive disposed between the second major surface of the synthetic woven fabric and the glass woven fabric, wherein the thermoplastic laminating adhesive secures the synthetic woven fabric to the glass woven fabric; and wherein the abrasive layer comprises a make layer, a size layer, and abrasive particles, and overlays at least a portion of the presize.