Water-soluble blocking wax formulation
AssigneeBausch & Lomb Incorporated
InventorsJames A. Bonafini JR., Anthony D. Parrinello, Peter J. Tinios
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Abstract
The invention provides, in a first embodiment, a blocking wax composition. The blocking wax comprises from about 50 to about 90 weight percent of a water-soluble continuous phase and from about 10 to about 50 weight percent of a discontinuous solid phase filler that is substantially inert to the continuous phase. The invention further provides a method for mounting a contact lens blank for machining.
Claims20
A blocking wax comprising from about 50 to about 90 weight percent of a water-soluble continuous phase and from about 10 to about 50 weight percent of a discontinuous solid phase filler.
A method of for releasably attaching an ophthalmic lens blank to a mounting surface by contacting the ophthalmic lens blank and the mounting surface with a blocking wax composition comprising from about 50 to about 90 weight percent of a water-soluble continuous phase and from about 10 to about 50 weight percent of a discontinuous solid phase filler.
Dependencies are inferred from the claim text.