Plastic lens composition and method for the production thereof

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...

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4251744, 522 8, 522 76, 522 78, 522 79, 522168, 522181, 526270, 526314, C08F 250, C08F 1824, C08F22028, C08F22020

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active

048793183

ABSTRACT:
A method for making a plastic lens and a plastic lens made thereby. The method comprises disposing a liquid monomer or a monomer mixture and a photosensitive initiator into a mold cavity and directing ultraviolet light to act on the lens forming material in the cavity to produce a lens therefrom. The liquid monomer mixture may include one or more of diethylene glycol bis(allyl)-carbonate, bisphenol A diallyl carbonate, 1,6 hexanedioldimethacrylate, trimethylol propane triacrylate, tetraethylene glycol diacrylate, tripropylene glycol diacrylate, tetrahydrofurfurylmethacrylate, tetrahydrofurfuryl acrylate and styrene. The photosensitive initiator may be selected from the group of 2-hydroxy-2-methyl-1- phenyl-propan-1-one and 1-hydroxycyclohexyl phenyl ketone.

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