Process for producing alicyclic (meth)allyi ester monomer, alicyclic (meth)allyl ester compound, production process of the compound, plastic lens composition containing the compound, plastic lens obtained by curing the composition, and production process of the plastic lens
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 storage, is produced using the monomer, and a plastic lens is obtained using the compound.
Claims16
An alicyclic (meth)allyl ester compound having a terminal structure of formula (1) and a repeating structure of formula (2), which is produced by a process comprising transesterifying an alicyclic (meth)allyl ester monomer, produced by a process 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, with a polyhydric alcohol in the presence of a catalyst,
- wherein each R1 independently represents an allyl group or a methallyl group, each X independently represents an organic residue derived from a polyvalent carboxylic acid having an alicyclic structure, and each Y independently represents an organic residue derived from a polyhydric alcohol having from 2 to 20 carbon atoms and containing from 2 to 6 hydroxyl groups, provided that by the ester bonding, X may have a branched structure having a terminal group of formula (1) and a repeating unit of formula (2) or may have R1, and that, by the ester bonding, Y may have a branched structure having a terminal group of formula (1) and a repeating unit of formula (2).
Dependencies are inferred from the claim text.