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专利名称：METHOD FOR PRODUCING POLYTHIOL
COMPOUND, POLYMERIZABLE
COMPOSITION FOR OPTICAL MATERIAL,AND USES THEREOF
发明人：Masaru Kawaguchi,Takeshi Nishimura申请号：US14405222申请日：20130228
公开号：US20150133692A1公开日：20150514
摘要：Provided is a method for producing a polythiol compound, comprising: a stepfor reacting 2-mercaptoethanol with a defined epihalohydrin compound at a temperatureof 10° C. to 50° C. to obtain a defined polyalcohol compound; a step for reacting thepolyalcohol compound thus obtained with thiourea in the presence of hydrogen chlorideto obtain an isothiuronium salt; a step for adding, while maintaining a reaction solutioncontaining the isothiuronium salt thus obtained at a temperature of 15° C. to 60° C.,aqueous ammonia to the reaction solution within 80 minutes, thereby hydrolyzing theisothiuronium salt to obtain a defined polythiol compound; and a step for addinghydrochloric acid which is a concentration of 25% to 36% to the solution containing thepolythiol compound thus obtained, washing the solution at a temperature of 10° C. to 50°C. to purify the polythiol compound.
申请人：MITSUI CHEMICALS, INC.
地址：Minato-ku JP
国籍：JP
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