Water-soluble blocking wax formulation

Details Water-soluble blocking wax formulation Water-soluble blocking wax formulation

2006-09-05

2006-09-05

Cain, Edward J. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S425000, C524S430000

Reexamination Certificate

active

07101920

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.

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