公开(公告)号：US11820738B2

公开(公告)日：2023-11-21

申请号：US17649082

申请日：2022-01-27

Applicant: NIPPON SHOKUBAI CO., LTD.

Inventor： Tomoki Miyatake ,  Akimasa Watanabe ,  Shunsuke Iwakura

IPC: C07C41/03

CPC classification number: C07C41/03 ,  C07C41/03 ,  C07C43/11

Abstract: The present invention is to provide a means that can reduce coloring of secondary alcohol alkoxylate. The present invention relates to a method for producing a secondary alcohol alkoxylate which comprises feeding an alkylene oxide from a plurality of positions in a tubular reactor to a secondary alcohol to react them, wherein the alkylene oxide is fed in such a manner that a feeding interval is extended and a feeding rate is increased each with a specific proportion.