PROCESS FOR PRODUCING PENTAERYTHRITOL MERCAPTOCARBOXYLIC ACID ESTER, POLYMERIZABLE COMPOSITION, RESIN, OPTICAL MATERIAL, AND LENS
申请人:MITSUI CHEMICALS, INC.
公开号:US20180186733A1
公开(公告)日:2018-07-05
A process for producing a pentaerythritol mercaptocarboxylic acid ester of the present invention includes: a step of reacting pentaerythritol with a mercaptocarboxylic acid, in which an absorbance of a 5 wt % aqueous solution of the pentaerythritol at a wavelength of 270 nm, which is measured using a quartz cell having an optical path length of 50 mm, is 0.07 or less.
本发明的一种生产对羟基羧基巯基脂肪酸酯的工艺包括:将对羟基羧基巯基脂肪酸与对羟基羧基醇反应的步骤,其中在使用光路长度为50毫米的石英池测量的270纳米波长处,对5重量%的对羟基羧基醇水溶液的吸光度为0.07或更低。