公开(公告)号：US20180319934A1

公开(公告)日：2018-11-08

申请号：US15770779

申请日：2016-10-19

Applicant: Dow Global Technologies LLC

Inventor： Troy E. Knight ,  Thomas C. Young ,  Gerald W. Dare ,  Hannah L. Crampton ,  Bruce D. Hook ,  Pasquale Sirignano ,  Daviele Vinci

IPC: C08G65/24 ,  C08G65/12 ,  C08G65/46

CPC classification number: C08G59/04 ,  C08G59/022 ,  C08G59/025 ,  C08G59/22

Abstract: Produce diglycidyl-capped polyalkylene glycol by (a) providing epihalohydrin, a polyalkylene glycol that contains and ethylene oxide component and a Lewis acid; (b) coupling the epihalohydrin to the polyalkylene glycol using the Lewis acid as a catalyst to produce a coupling product; (c) stripping 1,4-dioxane from the coupling product; and (d) epoxidation of the coupling product by addition of a base to form diglycidyl-capped polyalkylene glycol in an organic phase.