公开(公告)号：US3845149A

公开(公告)日：1974-10-29

申请号：US35640673

申请日：1973-05-02

Applicant: HOECHST AG

Inventor： PIETZSCH S ,  WIRTZ R ,  SCHAEFFER G

IPC: C07C5/22 ,  B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07C1/00 ,  C07C5/27 ,  C07C15/24 ,  C07C67/00 ,  C07C5/28

CPC classification number: C07C5/2751 ,  C07C5/2759 ,  Y10S585/954 ,  C07C15/24

Abstract: 1. A PROCESS FOR THE ISOMERIZATION OF A-ISOPROPYLNAPHTHALENE TO B-ISOPROPYL NAPHTHALENE WITH AN ALUMINIUM CHLORIDE IN AMOUNTS OF 0.05 TO 0.8% BY WEIGHT ALUMINUM CHLORIDE IN AMOUNTS OF 0.05 TO 0.8% BY WEIGHT OR ETHYL ALUMINUM DICHLORIDE IN AMOUNTS OF 0.5 TO 1.5% BY WEIGHT OR A MIXTURE THEREOF, EACH CALCULATED ON THE TOTAL QUANTITY OF THE INITIAL ALKYLATED NAPHTHALENE, THE PORTION OF THE B-ISOMERIC MONO - ISOPROPYL NAPHTHALENE BEING AT LEAST 92%, CALCULATED ON THE TOTAL MONO-ISOMER PORTION AND THE TOTAL PORTION OF THE MONO-ISOPROPYL-NAPHTHALENE EXCEEDING 70% BY WEIGHT, CALCULATED ON THE TOTAL AMOUNT OF ALKYLATED NAPHTHALENES, AT A TEMPERATURE OF FROM 40 TO 200* C.

公开(公告)号：US3754029A

公开(公告)日：1973-08-21

申请号：US3754029D

申请日：1971-09-13

Applicant: HOECHST AG

Inventor： HOLTERMANN R ,  WIRTZ R ,  FREYER W ,  GSCHEIDMEIER M

IPC: C07C51/377 ,  C07C51/487 ,  C07C51/42

CPC classification number: C07C51/377 ,  C07C51/487 ,  C07C53/16

Abstract: DI- AND TRICHLOROACETIC ACID CONTAINED AS IMPURITTIES IN CRUDE MONOCHLOROACETIC ACID ARE PARRTIALLY DEHALOGENATEDD AND TRANSFORMED IN MONOCHLOROACETIC ACID AT A TEMPERATURE OF FROM 110 TO 145*C. IN A CONTINUOUS PROCESS IN THE PPRESENCE OF HYDROGEN WHILE TRICKLING THROUGH A CATALYST LAYER THE ACTIVE CONSTITUENT OF WHICH IS A NOBLE METAL OF SUBGROUP VIII OF THE PERIODIC TABLE.

公开(公告)号：SE309979B

公开(公告)日：1969-04-14

申请号：SE595265

申请日：1965-05-06

Applicant: HOECHST AG

Inventor： GOESSEL H ,  WIRTZ R ,  FERNHOLZ H

IPC: C07C20060101 ,  C07C121/32

Abstract: Unsaturated mononitriles are prepared by reacting an olefin with hydrogen cyanide and oxygen under superatmospheric pressure and in the presence of metallic Ru, Rh, Pd, Os, Ir or Pt as catalyst. It is preferred to operate at 10-120 DEG C. under 5-150 atmospheres pressure. The catalyst may be supported on an inert carrier and may include an alkali metal or alkaline earth metal cyanide as an auxiliary catalyst. Specified olefins are ethylene, propylene, butylene and pentene. Examples relate to the preparation of acrylonitrile.