Ferro Corporation
Slurry composition and additives and method for polishing organic polymer-based ophthalmic substrates

Last updated:

Abstract:

The present invention provides a slurry composition and method for polishing organic polymer-based ophthalmic substrates. The slurry composition according to the invention includes an aqueous dispersion of abrasive particles and one of a polyvinyl alcohol compound, and a tertiary amide functionalized compound. The abrasive particles can be alumina, zirconia, silica, titania, ceria, spinel or combinations of the foregoing.

Status:
Grant
Type:

Utility

Filling date:

13 Jun 2016

Issue date:

17 Dec 2019