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1. (WO2018031611) GLYCOL ETHER PROCESS

Pub. No.:    WO/2018/031611    International Application No.:    PCT/US2017/046013
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Thu Aug 10 01:59:59 CEST 2017
IPC: C07C 41/42
C07C 43/13
C07D 301/10
Applicants: SCIENTIFIC DESIGN COMPANY, INC.
Inventors: KATIYAR, Saurabh
Title: GLYCOL ETHER PROCESS
Abstract:
A process for the preparation of glycol ethers by providing a diethylene glycol ether column bottoms mixture comprising triethylene glycol ether, tetraethylene glycol ether, and glycol ether catalyst; separating, in a stripping column, the column bottom mixture into a triethylene glycol ether vapor overhead and a liquid bottoms; and separating, in an evaporator, the liquid bottoms into a residue containing about 80% to about 90% tetraethylene glycol ether and an evaporator overhead comprising at least about 60% tetraethylene glycol ether.