Hydrophilic contact lenses and lens polymer

Hydrophilic contact lenses and lens polymer

A superior hydrophilic gel polymer and contact lenses therefrom are formed by bulk polymerization of about 100 parts by volume of hydroxyethyl methacrylate, 10 parts by volume of isobutyl methacrylate, 0.136 parts by volume of trimethylolpropane trimethacrylate, 1.35 parts by volume of methacrylic a...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HOLCOMBE, JR., FRANK O
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:A superior hydrophilic gel polymer and contact lenses therefrom are formed by bulk polymerization of about 100 parts by volume of hydroxyethyl methacrylate, 10 parts by volume of isobutyl methacrylate, 0.136 parts by volume of trimethylolpropane trimethacrylate, 1.35 parts by volume of methacrylic acid in the presence of 0.25 parts by volume of 2,5 dimethyl 2,5 bis (2-ethyl hexoyl peroxy) hexane at a temperature of about 65 DEG C to produce a material which, when hydrated, exhibits a water content of about 43% and a linear expansion of about 22%.