NOVEL CYCLIC COMPOUND AND OPTICAL MATERIAL COMPOSITION INCLUDING SAME
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:US20170334876A1
公开(公告)日:2017-11-23
One embodiment of the present invention can provide an optical material composition that includes a cyclic compound that is represented by formula (1) and an episulfide that is represented by formula (2). Another embodiment of the present invention can provide an optical material production method that includes a step wherein, with respect to the total amount of the optical material composition, 0.0001-10 mass % of a polymerization catalyst is added to the optical material composition and the optical material composition is polymerization cured. (In formula (2), m is an integer from 0 to 4, and n is an integer from 0 to 2.)
NOVEL EPISULFIDE COMPOUND AND OPTICAL MATERIAL COMPOSITION CONTAINING SAME
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:US20170247351A1
公开(公告)日:2017-08-31
According to the present invention, it is possible to provide an optical material composition that contains an episulfide compound represented by formula (1) and an episulfide compound represented by formula (2). According to this optical material composition, it is possible to suppress a reduction in the yield rate caused by molding defects, and possible to obtain an optical material having excellent dyeability.
(In formula (1), m and p are each an integer between 0 and 4, and n and q are each an integer between 0 and 2.)
(In formula (2), m is an integer between 0 and 4 and n is an integer between 0 and 2.)
METHOD FOR PRODUCING SULFUR-CONTAINING EPOXY COMPOUND
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:US20140371475A1
公开(公告)日:2014-12-18
An object of the present invention is to provide a method for producing a sulfur-containing epoxy compound producing no scum-like insoluble matter. According to the present invention, a sulfur-containing halohydrin compound is dripped into and reacted with a mixed solvent containing an organic solvent and a basic compound to provide the method for producing the sulfur-containing epoxy compound. According to aspects of the present invention, the organic solvent is at least one type of compound selected from toluene and benzene, the basic compound is at least one type of compound selected from sodium hydroxide, potassium hydroxide and calcium hydroxide, and the reaction temperature is between −5° C. and 30° C.
POLYTHIOL COMPOSITION AND METHOD FOR PRODUCING SAME
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:US20170247322A1
公开(公告)日:2017-08-31
The present invention provides a polythiol composition containing, as the main component, a polythiol compound (a) having two or more mercapto groups, and containing 0.5% by mass or less of a nitrogen-containing compound (b) in which at least one mercapto group in the polythiol compound (a) is substituted with a group represented by formula (1).
According to the present invention, a polythiol compound having a total nitrogen content of 50 to 600 ppm inclusive can be provided. According to the present invention, a method for producing the polythiol compound can also be provided, said method being characterized by comprising the steps of: reacting a polyalcohol with thiourea to prepare a thiuronium salt; and adding at least one base selected from the group consisting of hydrazine (hydrate), ammonia and an amine and an inorganic base (that is different from hydrazine (hydrate) or ammonia) to the thiuronium salt in the presence of an organic solvent to hydrolyze the thiuronium salt.