公开(公告)号：US10160709B2

公开(公告)日：2018-12-25

申请号：US15672927

申请日：2017-08-09

Applicant: Scientific Design Company, Inc.

Inventor： Saurabh Katiyar

IPC: C07C41/42 ,  B01D5/00 ,  C07C43/13 ,  B01D3/06 ,  B01D3/14 ,  B01D19/00

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.

公开(公告)号：US11926540B2

公开(公告)日：2024-03-12

申请号：US17686556

申请日：2022-03-04

Applicant: Scientific Design Company, Inc.

Inventor： Saurabh Katiyar ,  Saurabh H. Parikh ,  Jason P. Durand

IPC: C02F1/42 ,  C02F101/34 ,  C02F103/36 ,  C07D303/04

CPC classification number: C02F1/42 ,  C07D303/04 ,  C02F2001/422 ,  C02F2101/34 ,  C02F2103/36

Abstract: A method for the oxidation of ethylene to form ethylene oxide which comprises
treating an aqueous stream in a cycle water treatment unit containing an anion exchange resin to reduce the content of the impurities.