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US 6,545,120 B1Granted
Production of alicyclic (meth)allyl esters for plastic lens compositions
AssigneeShowa Denko K.K.
InventorsKazuhiko Ooga, Tsuneo Tajima, Hiroshi Uchida
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Abstract
An alicyclic (meth)allyl ester monomer obtained by a specific production process. An alicyclic (meth)allyl ester compound for plastic lenses, which can be obtained by a simple and easy production process and which can endure a long-term storages, is produced using the monomer, and a plastic lens is obtained using the compound.
Claims3
A process for producing an alicyclic (meth)allyl ester monomer, comprising reacting a polyvalent alkyl ester of a polybasic acid having an alicyclic structure with an allyl alcohol and/or a methallyl alcohol in the presence of a transesterification catalyst.
Dependencies are inferred from the claim text.