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.
Claims5
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, wherein the continuous phase comprises at least one member selected from the group consisting of cellulose, cellulose derivatives and water-soluble carboxyvinyl polymers.
Dependencies are inferred from the claim text.