Provided is a method for producing a polythiol compound, the method including: step 1 of reacting 2-mercaptoethanol having a water content of 3000 ppm or less on a mass basis, with epihalohydrin to obtain a halide represented by the formula (1), wherein X represents a halogen atom; step 2 of reacting the halide represented by the formula (1) with an alkali metal compound selected from the group consisting of an alkali metal sulfide and an alkali metal hydroxide to obtain a polyol compound selected from the group consisting of a polyol compound represented by the formula (2) and a polyol compound represented by the formula (3); step 3 of reacting the polyol compound with thiourea in the presence of an acid to obtain an isothiuronium salt; step 4 of hydrolyzing the isothiuronium salt in the presence of a base to obtain a polythiol salt; and step 5 of converting the polythiol salt into a polythiol by an acid to obtain at least one polythiol compound selected from the group consisting of a polythiol compound represented by the formula (4), a polythiol compound represented by the formula (5), a polythiol compound represented by the formula (6), and a polythiol compound represented by the formula (7).
本发明提供了一种生产聚
硫醇化合物的方法,该方法包括步骤 1:将
水含量为 3000 ppm 或更低的
2-巯基乙醇与表卤代
甲醇反应,得到由式(1)代表的卤化物,其中 X 代表卤素原子;步骤 2:将式(1)代表的卤化物与选自碱
金属
硫化物和碱
金属氢氧化物的碱
金属化合物反应,得到选自式(2)代表的多元醇化合物和式(3)代表的多元醇化合物的多元醇化合物;步骤 3:在酸存在下,使多元醇化合物与
硫脲反应,得到异
硫脲盐; 步骤 4:在碱存在下,
水解异
硫脲盐,得到聚
硫醇盐;步骤 5 用酸将聚
硫醇盐转化为聚
硫醇,得到至少一种聚
硫醇化合物,该化合物选自由式 (4) 所代表的聚
硫醇化合物、式 (5) 所代表的聚
硫醇化合物、式 (6) 所代表的聚
硫醇化合物和式 (7) 所代表的聚
硫醇化合物组成的组。