公开(公告)号：CA2088772A1

公开(公告)日：1992-02-05

申请号：CA2088772

申请日：1991-07-27

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER

IPC: C07F9/02 ,  C07F9/38

Abstract: PCT No. PCT/EP91/01412 Sec. 371 Date Feb. 3, 1993 Sec. 102(e) Date Feb. 3, 1993 PCT Filed Jul. 27, 1991 PCT Pub. No. WO92/02524 PCT Pub. Date Feb. 20, 1992.Method of separating vinylphosphonic acid from crude mixtures. The invention relates to a method for separating vinylphosphonic acid from crude mixtures, the separation being carried out by extraction with alcohols and/or ketones, which in each case comprise at least 5 carbon atoms. According to the invention, vinylphosphonic acid can be obtained in high purity and good yield from highly contaminated crude mixtures.

公开(公告)号：BR9005188A

公开(公告)日：1991-09-17

申请号：BR9005188

申请日：1990-10-16

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER ,  SCHMIDT KARL-HEINZ ,  EICHLER KLAUS ,  HOERSTERMANN PETER ,  GRADL RAINHARD ,  LANGNER HORST

IPC: B01J31/04 ,  B01D3/00 ,  B01D3/14 ,  C07B61/00 ,  C07C67/05 ,  C07C67/055 ,  C07C67/54 ,  C07C67/58 ,  C07C69/14 ,  C07C69/15

Abstract: The invention relates to a process for the isolation of vinyl acetate which involves not combining the bottom product of the recylced gas washings with the water-saturated vinyl acetate but rather introducing it to further multiple distillation columns from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen over catalysts containing palladium or palladium compounds in the gas phase.

公开(公告)号：BR9002802A

公开(公告)日：1991-08-20

申请号：BR9002802

申请日：1990-06-13

Applicant: HOECHST AG

Inventor： WUNDER FRIEDRICH ,  WIRTZ PETER ,  EICHLER KLAUS ,  ROSCHER GUENTER

IPC: C07C67/05 ,  B01J23/58 ,  B01J23/60 ,  B01J29/70 ,  B01J31/04 ,  B01J35/10 ,  C07B61/00 ,  C07C67/055 ,  C07C69/15

公开(公告)号：CA2018991A1

公开(公告)日：1990-12-15

申请号：CA2018991

申请日：1990-06-14

Applicant: HOECHST AG

Inventor： WUNDER FRIEDRICH ,  WIRTZ PETER ,  EICHLER KLAUS ,  ROSCHER GUENTER

IPC: C07C67/05 ,  B01J23/58 ,  B01J23/60 ,  B01J29/70 ,  B01J31/04 ,  B01J35/10 ,  C07B61/00 ,  C07C67/055 ,  C07C69/15

Abstract: The invention relates to a process fox the preparation of vinyl acetate in the gas phase from ethylene, acetic acid and oxygen and/or oxygen-containing gases on a catalyst of palladium and/or compounds thereof, and optionally. in additions gold and/or gold compounds, and, as activators, alkali metal compounds and optionally in addition, cadmium compounds on a support. The support comprises SiO2 or an SiO2-Al2O3 mixture having a surface area of 50-250 m2/g and a pore volume of 0.4-1.2 ml/g, and has a grain size of from 4 to 9 mm. 5 to 20% of the pore volume of the support is farmed by pores having radii of from 200 to 3,000 angstrom and 50 to 90% of the pore volume is formed by pores having radii of from 70 to 100 .ANG.ngstrom.

公开(公告)号：DK153370B

公开(公告)日：1988-07-11

申请号：DK90876

申请日：1976-03-03

Applicant: HOECHST AG

Inventor： FERNHOLZ HANS ,  SCHMIDT HANS-JOACHIM ,  ROSCHER GUENTER ,  SCHMITZ HEINZ ,  WUNDER FRIEDRICH

IPC: C07C69/145 ,  B01J23/44 ,  B01J23/58 ,  B01J37/00 ,  B01J37/02 ,  C07B61/00 ,  C07C67/055 ,  C07C69/025 ,  C07C69/15 ,  C07C67/05

Abstract: A process for the preparation of a palladium catalyst for the oxacylation of olefins in the gaseous phase, which comprises impregnating a catalyst carrier with a solution of a palladium compound drying the catalyst at a temperature of below 90 DEG C until a residual solvent content of less than 8% by weight is attained, and reducing the impregnated catalyst with a gas mixture of inert gas and reducing agent.

公开(公告)号：NO147242C

公开(公告)日：1983-03-09

申请号：NO770873

申请日：1977-03-11

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER ,  SCHMITZ HEINZ

IPC: B01D3/14 ,  B01D3/16 ,  B01D5/00 ,  C07C20060101 ,  C07C67/05 ,  C07C67/055 ,  C07C67/48 ,  C07C67/54 ,  C07C69/15 ,  C07C69/54

公开(公告)号：NO146845C

公开(公告)日：1982-12-22

申请号：NO760718

申请日：1976-03-03

Applicant: HOECHST AG

Inventor： FERNHOLZ HANS ,  ROSCHER GUENTER ,  SCHMIDT HANS-JOACHIM ,  SCHMITZ HEINZ ,  WUNDER FRIEDRICH

IPC: C07C69/145 ,  B01J23/44 ,  B01J23/58 ,  B01J37/00 ,  B01J37/02 ,  C07B61/00 ,  C07C67/055 ,  C07C69/025 ,  C07C69/15 ,  C07C67/05

Abstract: A process for the preparation of a palladium catalyst for the oxacylation of olefins in the gaseous phase, which comprises impregnating a catalyst carrier with a solution of a palladium compound drying the catalyst at a temperature of below 90 DEG C until a residual solvent content of less than 8% by weight is attained, and reducing the impregnated catalyst with a gas mixture of inert gas and reducing agent.

公开(公告)号：NO147242B

公开(公告)日：1982-11-22

申请号：NO770873

申请日：1977-03-11

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER ,  SCHMITZ HEINZ

IPC: B01D3/14 ,  B01D3/16 ,  B01D5/00 ,  C07C20060101 ,  C07C67/05 ,  C07C67/055 ,  C07C67/48 ,  C07C67/54 ,  C07C69/15 ,  C07C69/54

公开(公告)号：CA1095453A

公开(公告)日：1981-02-10

申请号：CA273787

申请日：1977-03-11

Applicant: HOECHST AG

Inventor： ROSCHER GUENTER ,  SCHMITZ HEINZ

IPC: B01D3/14 ,  B01D3/16 ,  B01D5/00 ,  C07C20060101 ,  C07C67/05 ,  C07C67/055 ,  C07C67/48 ,  C07C67/54 ,  C07C69/15 ,  C07C69/54

Abstract: MOE 76/F 050 PROCESS FOR THE SEPARATION OF WATER FROM GAS MIXTURES FORMED IN THE MANUFACTURE OF VINYL ACETATE of the disclosure: The invention relates to a process for the partial separation of water from gas mixtures formed in the manufacture of vinyl acetate by reaction of ethylene with acetic acid and oxygen in the gaseous phase and in the presence of catalysts. In a "predehydration column", more than half of the water formed in the reaction is eliminated without requiring energy feed. The mixture obtained which is relatively poor in water is worked up according to known methods.

公开(公告)号：CA1027062A

公开(公告)日：1978-02-28

申请号：CA204283

申请日：1974-07-08

Applicant: HOECHST AG

Inventor： HECK GUENTER ,  ROSCHER GUENTER ,  DONTH RUDOLF

IPC: C07C67/54 ,  B01D3/00 ,  B01D3/36 ,  C07C51/00 ,  C07C51/46 ,  C07C67/00 ,  C07B29/00

Abstract: Water is separated by distillation from organic multiple component mixtures containing at least one component partly miscible with water. The component miscible with water is distilled azeotropically with the water contained in the mixture, the distillate is separated into water and a zeotrope forming agent and the latter is recycled to the distilling column. In the recycling process, one part of the azeotrope forming agent is conducted to the top of the column and the other part is fed into the column at the feed mixture inlet or at a location thereunder.