METHOD FOR PRODUCING POLYTHIOL COMPOUND, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, AND USES THEREOF
申请人:MITSUI CHEMICALS, INC.
公开号:US20150126781A1
公开(公告)日:2015-05-07
Provided is a method for producing a polythiol compound, comprising: a step for reacting a polyalcohol compound represented by the following formula (4) with thiourea in the presence of hydrogen chloride to obtain an isothiuronium salt; a step for adding, while maintaining a reaction solution containing the isothiuronium salt thus obtained at a temperature of 20° C. to 60° C., aqueous ammonia to the reaction solution within 80 minutes, thereby hydrolyzing the isothiuronium salt to obtain a polythiol compound containing, as a main component, one kind or two or more kinds selected from the group consisting of compounds represented by the following formulae (6) to (8); and a step for adding hydrochloric acid which is a concentration of 30% to 36% to the solution containing the polythiol compound thus obtained, washing the solution at a temperature of 30° C. to 55° C. to purify the polythiol compound.
提供了一种制备多硫化合物的方法,包括以下步骤:与硫脲在氯化氢存在下反应,以得到异硫脲盐,所述硫脲为以下式(4)所表示的多羟基化合物;在保持包含所得异硫脲盐的反应溶液在20℃至60℃的温度下,在80分钟内向反应溶液中加入水溶氨,从而水解异硫脲盐,以得到含有以下化合物所表示的化合物中的一种或两种或两种以上的主要成分的多硫化合物(6)至(8);以及向所得多硫化合物的溶液中添加浓度为30%至36%的盐酸,以在30℃至55℃的温度下洗涤溶液,以纯化多硫化合物。