WATER-SOLUBLE BLOCKING WAX FORMULATION

WATER-SOLUBLE BLOCKING WAX FORMULATION

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 con...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PARRINELLO, ANTHONY, D, BONAFINI, JR., JAMES, A, TINIOS, PETER, J
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
CONTACT LENSES
METALLURGY
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung: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.