发明名称 |
PRODUCTION METHOD FOR POLYTHIOL COMPOUND, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL AND USE THEREFOR |
摘要 |
Provided is a method for producing a polythiol compound, comprising: a step for reacting 2-mercaptoethanol with an epihalohydrin compound represented by the following formula (1) at a temperature of 10°C to 50°C to obtain a polyalcohol compound represented by the following formula (2); a step for reacting the polyalcohol compound thus obtained 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 15°C to 60°C, aqueous ammonia to the reaction solution within 80 minutes, thereby hydrolyzing the isothiuronium salt to obtain a polythiol compound represented by the following formula (5) ; and a step for adding hydrochloric acid which is a concentration of 25% to 36% to the solution containing the polythiol compound thus obtained, washing the solution at a temperature of 10°C to 50°C to purify the polythiol compound. |
申请公布号 |
EP3093282(A1) |
申请公布日期 |
2016.11.16 |
申请号 |
EP20160171686 |
申请日期 |
2013.02.28 |
申请人 |
MITSUI CHEMICALS, INC. |
发明人 |
KAWAGUCHI, MASARU;NISHIMURA, TAKESHI |
分类号 |
C07C319/20;C07C321/14;C08G18/38;C08G75/00;G02B1/04 |
主分类号 |
C07C319/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|