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US 5,399,735 AGranted
Thiol methacrylate or acrylate, method of making same and a lens made therefrom
AssigneeToray Industries, Inc.
InventorsYuichiro Iguchi, Michio Kimura, Koichiro Oka
Life of this patent
Estimating the term…
Abstract
A thiol methacrylate or acrylate compound represented by the formula (1) or (2): ##STR1## wherein R.sup.1 is H or CH.sub.3 and X is selected from: ##STR2## wherein R.sup.1 is H or CH.sub.3 and m is an integer of 1 to 4. The thiol methacrylate or acrylate compound gives a resin having a high refractive index, a large Abbe number, and a good hardness and heat resistance, and giving little or no smell at processing.
Claims2
A thiol methacrylate or acrylate compound represented by the following formula (1):
- ##STR32## wherein R.sup.1 represents a hydrogen atom or a methyl group and X represents a divalent group selected from the group consisting of:
- ##STR33## wherein R.sup.1 is the same as defined above.
A thiol methacrylate or acrylate compound represented by the following formula (1):
- ##STR34## wherein R.sup.1 represents a hydrogen atom or a methyl group and X represents ##STR35##
Dependencies are inferred from the claim text.