Abrasive products and methods for fine polishing of ophthalmic lenses

US8968435B2 · kind B2 · utility

Assignees

• SAINT-GOBAIN ABRASIVES, INC. · US
• SAINT-GOBAIN ABRASIFS · FR

Inventors

• James J. Manning · Braintree, US
• Mark E. Sternberg · Abington, US
• Jianna Wang · Grafton, US

Key dates

• Filing date: Mar 29, 2013
• Grant date: Mar 3, 2015
• Expiry date: May 30, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K3/1436
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A coated abrasive product including green, unfired abrasive aggregates having a generally spheroidal or toroidal shape, the aggregates formed from a composition comprising abrasive grit particles and a nanoparticle binder, wherein the abrasive aggregates are dispersed within a polymer resin coating, and wherein the coated abrasive product is capable of polishing an optical component, including ophthalmic lenses without the need to apply an abrasive slurry.