Title:
SULFUR-CONTAINING ALLYL CARBONATE COMPOUND, RESIN AND LENS USING THE SAME AND THEIR PRODUCTION
Document Type and Number:
Japanese Patent JP3891652
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a new compound having a low viscosity, a low smell and excellent storage stability, capable of providing a sulfur-containing carbonate- based resin low in dispersion, high in refractive index, excellent in impact resistance, scratching resistance, processability, etc., colorless and transparent free from optical strain, useful for lenses for glasses, a lens for a camera, etc.
SOLUTION: This sulfur-containing allyl carbonate is shown by the formula. The compound of the formula is obtained, for example, by dripping 0.5-2 equivalents of a halogenated allyl formate such as allyl chloroformate on 4- mercaptomethyl-3,6-dithiaoctane-1,8-dithiol previously made into a salt with a base, in the presence of a base such as sodium hydroxide, and carrying out a condensation reaction optionally in the presence of a solvent at 0-10°C under normal pressure while neutralizing a generated hydrogen halide with the base. A resin obtained by polymerizing the objective compound is useful as a material for a grazing material, a coating material and an adhesive besides an optical element material.
Inventors:
Shinichi Umeda
Yoshinobu Kanamura
Yoshinobu Kanamura
Application Number:
JP21975997A
Publication Date:
March 14, 2007
Filing Date:
August 01, 1997
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C07C329/06; G02B1/04; C08G75/28; (IPC1-7): C07C329/06; C08G75/28; G02B1/04
Domestic Patent References:
| JP2261808A | ||||
| JP9110827A | ||||
| JP10175947A |
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