公开(公告)号：ES2020233B3

公开(公告)日：1991-08-01

申请号：ES87111656

申请日：1987-08-12

Applicant: HOECHST AG

Inventor： GOSSEL HELMUT ,  KUCKERTZ HERBERT ,  RITTNER SIEGBERT ,  ROSENFELDER JOSEF ,  WOJTECH BERNHARD

IPC: B01D11/04 ,  C02F1/26 ,  C02F1/58 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C205/21 ,  C07C205/22 ,  C07C205/25 ,  C07C205/26

公开(公告)号：CA1246622A

公开(公告)日：1988-12-13

申请号：CA389578

申请日：1981-10-29

Applicant: HOECHST AG

Inventor： KUCKERTZ HERBERT ,  SCHAEFFER GEORG

IPC: C07C43/257 ,  B01J27/00 ,  B01J27/232 ,  B01J31/00 ,  C07B61/00 ,  C07C41/00 ,  C07C41/16 ,  C07C43/263 ,  C07C43/275 ,  C07C43/29 ,  C07C45/70 ,  C07C67/00

Abstract: of the disclosure: Diphenyl ethers are prepared by Ullmann reaction of alkali metal phenolates with halobenzenes in the presence of basic copper carbonate and/or copper salts of lower aliphatic carboxylic acids as catalysts. These special catalysts have a better catalytic activity than other copper catalysts known for the Ullmann reaction. The diphenyl ethers prepared or obtainable according to the invention are mainly intermediates in diverse fields such as pharmaceuticals or plant protecting agents.

公开(公告)号：CA1300349C

公开(公告)日：1992-05-12

申请号：CA587189

申请日：1988-12-29

Applicant: HOECHST AG

Inventor： HOEROLDT ERNST ,  GRIMM RICHARD ,  RITTNER SIEGBERT ,  KUCKERTZ HERBERT ,  BILLMANN WILFRIED

IPC: B01D53/14 ,  B01D53/34 ,  B01D53/54 ,  B01D53/70 ,  B01D53/72 ,  B01D53/77 ,  C10G70/06

Abstract: 87/F 398 K : A process for the separation of undesired organic ingredients from waste gases which are formed in the preparation of aromatic intermediates which comprises washing the waste gases with a washing liquid comprising a) paraffinic hydrocarbons having from 10 to 20 carbon atoms or b) diisopropylnaphthalene or a mixture of isomers thereof having the sum formula C16H20, an average molecular weight in the range of from 210 to 215, a boiling range in the range of from 290 to 300.degree.C (according to DIN 51 761) and a flash point above 130.degree.C (according to DIN 51 758) at a temperature in the range of from 0 to 50.degree.C to remove the said undesired organic ingredients.

公开(公告)号：CA1043819A

公开(公告)日：1978-12-05

申请号：CA220676

申请日：1975-02-18

Applicant: HOECHST AG

Inventor： KUCKERTZ HERBERT ,  SCHMITZ HEINZ

IPC: C07C17/00 ,  C07C17/26 ,  C07C19/041 ,  C07C21/12 ,  C07C67/00

Abstract: PROCESS FOR THE PREPARATION OF TETRACHLOROETHYLENE FROM TETRACHLOROMETHANE of the disclosure: A process for the preparation of tetrachloroethylene by pyrolysis of tetrachloromethane in contact with substantially graphitized carbon and at elevated temperatures is provided.

公开(公告)号：CA1293519C

公开(公告)日：1991-12-24

申请号：CA544393

申请日：1987-08-13

Applicant: HOECHST AG

Inventor： GOESSEL HELMUT ,  KUCKERTZ HERBERT ,  RITTNER SIEGBERT ,  ROSENFELDER JOSEF ,  WOJTECH BERNHARD

IPC: B01D11/04 ,  C02F1/26 ,  C02F1/58 ,  C07C67/00 ,  C07C201/00 ,  C07C201/16 ,  C07C205/21 ,  C07C205/22 ,  C07C205/25 ,  C07C205/26

Abstract: Process for extracting nitrohydroxyaromatics from aqueous solution. The invention relates to a process for extracting nitrohydroxyaromatics from aqueous solutions. In this process, the extracting agent used is an amine salt which comprises an aliphatic amine having a total carbon number of 10 to 75 and a strong acid. The amine salt can be employed undiluted or diluted with an organic solvent.

公开(公告)号：CA1051457A

公开(公告)日：1979-03-27

申请号：CA238330

申请日：1975-10-23

Applicant: HOECHST AG

Inventor： KUCKERTZ HERBERT

IPC: C07C53/12 ,  B01J23/00 ,  B01J23/38 ,  B01J27/08 ,  C07B61/00 ,  C07C51/00 ,  C07C51/56 ,  C07C67/00

Abstract: PROCESS FOR PREPARING ACETIC ANHYDRIDE of the disclosure: Process for preparing acetic anhydride from acetic acid methyl ester and carbon monoxide in the presence o catalysts containing noble metals of the 8th sub-group of the periodic table or their compounds as well as iodine and/or iodine compounds.