公开(公告)号：US3639472A

公开(公告)日：1972-02-01

申请号：US3639472D

申请日：1969-03-11

Applicant: KNAPSACK AG

Inventor： SENNEWALD KURT ,  OHORODNIK ALEXANDER ,  HARDEL HANS-JOACHIM

IPC: C07C45/54 ,  C07C51/09 ,  C07C45/00 ,  C07C51/00

CPC classification number: C07C45/54 ,  C07C51/09 ,  C07C47/06 ,  C07C53/08

Abstract: CARBOXYLIC ACID CINYL ESTER ARE HYDROLYTICALL SPLIT INTO ACETALDEHYDE AND CARBOXYLIC ACID IN LIQUID PHASE, AT 50-120*C., AND IN CONTACT WITH AN ORGANIC SULFONIC OR PHOSPHONIC ACID AND A MERCURY SALT THEREOF AS THE CATALYST.

公开(公告)号：US3574735A

公开(公告)日：1971-04-13

申请号：US3574735D

申请日：1967-12-06

Applicant: KNAPSACK AG

Inventor： SENNEWALD KURT ,  OHORODNIK ALEXANDER ,  KIRSTEIN DIETER ,  HARDEL HANS-JOACHIM

IPC: B01J31/02 ,  C07F9/42

CPC classification number: B01J31/0267 ,  C07F9/42

Abstract: PRODUCTION OF UNSATURATED PHOSPHONIC ACID DICHLORIDES FROM HALOGENO-ALKANE PHOSPHONIC ACID DICHLORIDES CONTAINING A HALOGENO-ALKANE RADICAL WITH 2 TO 8 CARBON ATOMS BY THERMAL DEHYDROHALOGENATION AND CONTINOUS DISTILLATIVE REMOVAL OF RESULTING UNSATURATED PHOSPHONIC ACID DICHLORIDE FROM REACTION MIXTURE, WHEREIN THE THERMAL DEHYDROHALOGENATION IS CARRIED OUT IN THE PRESENCE OF TRIPHENYL-PHOSPHINE AS THE CATALYST.