公开(公告)号：US3767692A

公开(公告)日：1973-10-23

申请号：US3767692D

申请日：1972-05-15

Applicant: CANADIAN IND

Inventor： CHIA C

IPC: C07C329/14 ,  C22B20060101 ,  C07C154/02

CPC classification number: C07C329/00

Abstract: AN IMPROVEMENT IN THE PROCESS FOR THE MANUFACTURE OF ALKALI METAL XANTHATES BY THE REACTION OF AN ALKYL ALCOHOL, CARBON DISULPHIDE AND ALKALI HYDROXIDE IN THE PRESENCE OF AN INERT DILUENT. THE IMPROVEMENT RESIDES IN THE REDUCTION OF SCALE FORMATION ON THE SURFACE OF THE HEAT EXCHANGER OF THE REACTION VESSEL BY ADDITION OF PELLETS OF AN INERT PLASTIC MATERIAL TO THE REACTION MIXTURE. THE USE OF THE PELLETS PERMITS AN INCREASE IN THE RATE OF PRODUCTION OF ALKALI METAL XANTHATES.