公开(公告)号：CA1297494C

公开(公告)日：1992-03-17

申请号：CA560543

申请日：1988-03-04

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER ,  KLEINER HANS-JERG ,  IHL GABRIELE ,  LEIPE HERMANN

IPC: C07B61/00 ,  C07F9/40

Abstract: HOE 87/F 065 : A process for the production of dialkyl esterr of vinyl phosphonic acid which comprises subjecting dialkyl esters of 2-acetoxyethane phosphonic acid to cleavage by contacting with a liquid catalytically acting medium at a temperature in the range from 150 to 270.degree.C and under a pressure such that the partial pressures of the total of the components of the reaction system is in the range from 1 to 500 mbar, and drawing off the resultlng dialkyl esters of vinyl phosphonic acid and other volatile reaction products.

公开(公告)号：CH674644A5

公开(公告)日：1990-06-29

申请号：CH17288

申请日：1988-01-19

Applicant: HOECHST AG

Inventor： IHL GABRIELE ,  ROSCHER GUENTER ,  MAYER NORBERT

IPC: C07C57/44 ,  B01J31/04 ,  C07B61/00 ,  C07C51/00 ,  C07C51/09 ,  C07C67/00