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