公开(公告)号：CA2063645A1

公开(公告)日：1992-09-23

申请号：CA2063645

申请日：1992-03-20

Applicant: HOECHST AG

Inventor： COSMO ROBERT ,  DETTMEIER UDO ,  LEUPOLD ERNST I

IPC: A23L33/26 ,  C07G99/00 ,  C07H15/04 ,  C08B37/00 ,  C08G65/34 ,  A23L1/307

Abstract: -1- HOE 91/F 091 of the disclosure Process for the preparation of polycondensates of glucose and/or maltose and polyhydric alcohols A process for the preparation of polycondensates of glucose and/or maltose and unbranched polyhydric alcohols having 3 to 6 carbon atoms, in which one carbon atom can carry an O-galactopyranosyl or O-glucopyranosyl group and the remaining carbon atoms carry hydroxyl groups or every carbon atom carries a hydroxyl group, by melt condensation, which comprises carrying out the polycondensation in the presence of ascorbic acid.

公开(公告)号：CA981700A

公开(公告)日：1976-01-13

申请号：CA148643

申请日：1972-08-03

Applicant: HOECHST AG

Inventor： OHORODNIK ALEXANDER ,  DETTMEIER UDO ,  GEHRMANN KLAUS ,  BERNS HEINZ-JOSEF

IPC: C07C17/00 ,  C07C17/25 ,  C07C17/38 ,  C07C17/395 ,  C07C21/20 ,  C07C21/21 ,  C07C67/00

公开(公告)号：AT127772T

公开(公告)日：1995-09-15

申请号：AT91918140

申请日：1991-10-15

Applicant: HOECHST AG

Inventor： NEUBER MARITA ,  DETTMEIER UDO ,  LEUPOLD ERNST INGO

IPC: C07B61/00 ,  B01J29/70 ,  C07C2/66 ,  C07C2/86 ,  C07C15/24

Abstract: Process for the production of isopropyl naphthaline by the alkylation of naphthaline with the aid of catalysts in which EU-1-zeolites are used as catalysts.

公开(公告)号：BR9107188A

公开(公告)日：1994-09-27

申请号：BR9107188

申请日：1991-12-10

Applicant: HOECHST AG

Inventor： DETTMEIER UDO ,  LANDGRAF WALTER

IPC: C07C201/08 ,  C07C205/06 ,  C07C205/12

Abstract: In a method for continuous nitration of a nitrable aromatic compound, which forms an azeotrope with water, by treating with nitric acid in the presence of nitrating acids, the reaction is carried out with a molar ratio of nitric acid to the aromatic compound of at least 1:1, the temperature and the pressure being coordinated so that the reaction mixture boils, the nitrating acid is recycled without further intermediate treatment, the resulting mixture is extracted with water and the eluate is returned to the reaction to restore the nitrating acid.

公开(公告)号：CA981699A

公开(公告)日：1976-01-13

申请号：CA149696

申请日：1972-08-18

Applicant: HOECHST AG

Inventor： GEHRMANN KLAUS ,  OHORODNIK ALEXANDER ,  DETTMEIER UDO ,  BERNS HEINZ-JOSEF

IPC: E04B1/00 ,  B01J8/22 ,  B01J27/00 ,  C07B61/00 ,  C07C17/00 ,  C07C17/358 ,  C07C21/09 ,  C07C67/00

公开(公告)号：IN176988B

公开(公告)日：1996-10-19

申请号：IN135CA1992

申请日：1992-03-02

Applicant: HOECHST AG

Inventor： LEUPOLD ERNST INGO ,  ZEISBERGER EDUARD ,  KAUFFELT MANFRED ,  HERZOG WILLI ,  DETTMEIER UDO ,  WEICHSELBAUMER GEORG

IPC: B01J23/10 ,  B01J23/96

公开(公告)号：CA2063324A1

公开(公告)日：1992-09-20

申请号：CA2063324

申请日：1992-03-18

Applicant: HOECHST AG

Inventor： LEUPOLD ERNST I ,  ZEISBERGER EDUARD ,  KAUFFELT MANFRED ,  HERZOG WILLI ,  DETTMEIER UDO ,  WEICHSELBAUMER GEORG

IPC: B01J38/00 ,  B01D29/35 ,  B01D61/14 ,  B01D65/06 ,  B01D65/08 ,  B01D67/00 ,  C07C51/235 ,  C07C51/42 ,  C07C59/125 ,  B01D61/20

Abstract: HOE 91/F 084 of the disclosure Process for separating catalysts from suspensions by filtration The process for separating off rare metal catalysts used in the preparation of ether-carboxylic acids by catalytic oxidation with a suspended catalyst comprises carrying out a crossflow filtration and pretreating the filter elements used with a medium which is not solid under the treatment conditions and is composed of one or more carboxylic acids.

公开(公告)号：CA2099108A1

公开(公告)日：1992-06-25

申请号：CA2099108

申请日：1991-12-10

Applicant: HOECHST AG

Inventor： DETTMEIER UDO ,  LANDGRAF WALTER

IPC: C07C201/08 ,  C07C205/06 ,  C07C205/12

Abstract: HOE 90/F 390 Process for the continuous nitration of nitratable aromatic compounds A process for the continuous nitration of a nitratable aromatic compound, which forms an azeotrope with water, by treatment with nitric acid in the presence of nitrating acids, which comprises carrying out the reaction using a molar ratio of nitric acid to the aromatic compound of at least 1.1, the temperature and the pressure being coordinated with one another in such a way that the reaction mixture boils, recycling the nitrating acid in the circulation without further intermediate treatment, extracting the product mixture with water and recycling the eluate, to return nitrating acid. to the reaction.

公开(公告)号：CA944349A

公开(公告)日：1974-03-26

申请号：CA120375

申请日：1971-08-12

Applicant: HOECHST AG

Inventor： KLEINER HANS-JERG ,  DETTMEIER UDO ,  BEERMANN CLAUS

IPC: C07F9/53 ,  C07F9/6506 ,  C08K5/5397

公开(公告)号：CA2167464C

公开(公告)日：2007-06-26

申请号：CA2167464

申请日：1996-01-17

Applicant: HOECHST AG

Inventor： RIEDEL KNUT ,  DETTMEIER UDO ,  ROSCHER GUENTER

IPC: C07F9/38 ,  C07F9/40

Abstract: The invention relates to a process for preparing dimethyl vinylphosphonate by thermal dissociation of dimethyl 2-acetoxyethanephosphonate in the gas phase, which com-prises vaporizing dimethyl 2-acetoxyethanephosphonate and dissociating it without catalysis at temperatures of from 400 to 700.degree.C into dimethyl vinylphosphonate and acetic acid.