公开(公告)号：AU639870B2

公开(公告)日：1993-08-05

申请号：AU7159891

申请日：1990-12-27

Applicant: UNION CARBIDE CHEMICALS AND PLASTICS COMPANY INC.

Inventor： KATHLEEN FRANCES GEORGE ,  LISE DAHURON ,  JOHN HOWARD ROBSON ,  GEORGE ERNEST KELLER II

IPC: B01D61/02 ,  B01D71/16 ,  B01D71/68 ,  C07C29/76 ,  C07C31/20 ,  C07C41/36 ,  C07D301/10 ,  C07D301/32 ,  C08G65/40 ,  C08G75/00 ,  C08G75/20

Abstract: A method is disclosed for separating impurity components, UV absorbers and/or UV absorber precursors contained in an ethylene glycol-water stream thereby desirably allowing the recovery of the glycols contained in such stream in an economical and efficient manner. Specifically, these undesirable components are separated by contacting the ethylene glycol-water stream with a suitable semi-permeable membrane to effect such separation.