-
公开(公告)号：DK461181A
公开(公告)日：1982-04-21
申请号：DK461181
申请日：1981-10-19
Applicant: HOECHST AG
Inventor： MUELLER W , INTERTHAL W , WILSKI H
IPC: B01F3/12 , B01F1/00 , B01F5/00 , B01F5/02 , B01F5/04 , B01F13/10 , B04C3/00 , B04C3/06 , B04C5/14 , B04C7/00 , C02F1/52 , C08J3/05 , B01F
Abstract: Apparatus for dispersing polymer powders, such as shown by the figure, comprising a funnel (1) with central filling inlet (2) in whose upper portion at least one tangential liquid inlet (3) is arranged, a funnel outlet tube (4) with annular nozzle (5) and a downstream jet pump (6), and process for dissolving polymer powders, characterised in that the polymer powder is dispersed in the apparatus described above and the dispersion is dissolved in a turbulent flow of the solvent.
-
公开(公告)号：ZA802634B
公开(公告)日：1981-05-27
申请号：ZA802634
申请日：1980-05-02
Applicant: HOECHST AG
Inventor： MUELLER W , SCHULTE W , HANNESEN K , BERGNER D
IPC: C01B7/01 , B01D17/025 , B01D17/032 , B01D17/12 , C01B7/07 , C01B7/075 , C25B1/26 , F25J1/00 , F25J3/00 , F25J3/06 , C25B
Abstract: In the electrolysis of an aqueous alkali metal chloride solution, a mixture of anolyte and steam-saturated gaseous chlorine is formed in the anode space of the electrolytic cell. According to the invention, the process is carried out under a pressure of at least 8 bars. For workup, the anolyte is at first separated from the steam-saturated gaseous chlorine which is then liquefied under a pressure of at least 8 bars by cooling. In the course of cooling there is obtained a condensate which consists of a liquid water-saturated chlorine phase and a liquid chlorine-saturated water phase. The temperature of said condensate is not to fall below 28 DEG C. during cooling. Finally, the light-weight water phase is separated from the chlorine phase having a heavier specific weight.
-
公开(公告)号：ZA8002634B
公开(公告)日：1981-05-27
申请号：ZA8002634
申请日：1980-05-02
Applicant: HOECHST AG
Inventor： MUELLER W , SCHULTE W , HANNESEN K , BERGNER D
-
4.发明专利
公开(公告)号：ZA7902822B
公开(公告)日：1980-07-30
申请号：ZA7902822
申请日：1979-06-07
Applicant: HOECHST AG
IPC: C07C49/385 , B01J21/00 , B01J23/00 , C07C45/00 , C07C45/45 , C07C49/657 , C07C67/00 , C07D
CPC classification number: C07C45/455
-
公开(公告)号：ZA764388B
公开(公告)日：1977-07-27
申请号：ZA764388
申请日：1976-07-22
Applicant: HOECHST AG
IPC: C07C27/00 , C07C69/88 , C07C37/00 , C07C37/06 , C07C37/07 , C07C39/08 , C07C41/00 , C07C43/23 , C07C45/45 , C07C45/60 , C07C67/00 , C07C253/00 , C07C255/53 , C07C
Abstract: Resorcinols are prepared by reacting 4-oxocarboxylic acid esters or delta -enollactones with a strong base in a glycol dialkyl ether as solvent and by subsequent dehydrogenating the acidified reaction product.
-
Patent Agency Ranking6.发明专利
公开(公告)号：ZA756397B
公开(公告)日：1976-09-29
申请号：ZA756397
申请日：1975-10-09
Applicant: HOECHST AG
IPC: C07D309/32 , B01J21/00 , C07B61/00 , C07C45/00 , C07C45/45 , C07C45/60 , C07C49/403 , C07C49/417 , C07C49/443 , C07C49/603 , C07C49/657 , C07C67/00 , C07D315/00 , C07C , C07D
Abstract: Cyclohexane-1,3-diones of the formula having up to 24 carbon atoms are prepared in admixture with 6-alkyl-3,4-dihydro-2-pyranones of the formula having up to 24 carbon atoms, in which formulae the radicals R and R' may be identical or different and represent each a hydrogen atom, an alkyl, a cycloalkyl or an aryl group each having up to 12 carbon atoms and the two radicals R' together optionally represent a -(CH2)3-group, by passing 4-oxocarboxylic acids of the formula having up to 24 carbon atoms and in which R and R' have the above meaning at a temperature of from 250 DEG to 500 DEG C in the gaseous phase over a dehydration catalyst and the pyranones are converted into cyclohexane-1,3-diones by passing them in the gaseous phase over a dehydration catalyst at a temperature of from 250 DEG to 500 DEG C.
-
7.发明专利
公开(公告)号：ZA75189B
公开(公告)日：1976-01-28
申请号：ZA75189
申请日：1975-01-10
Applicant: HOECHST AG
Inventor： MUELLER W
IPC: C07C20060101 , C07C37/06 , C07C213/00 , C07C67/00 , C07C215/76 , C07C217/92 , C07C225/20 , C07D20060101 , C07D265/06 , C07D265/30 , C07D295/08 , C07D295/10 , C07C , C07D
Abstract: 3-Aminophenols are prepared by dehydrogenation at elevated temperature of 3-aminocyclohexenones. The compounds obtained are valuable intermediates for drugs, dyestuffs and herbicides.
-
公开(公告)号：ZA7403473B
公开(公告)日：1975-05-28
申请号：ZA7403473
申请日：1974-05-30
Applicant: HOECHST AG
Inventor： MUELLER W
IPC: C07C255/17 , C07C20060101 , C07C67/00 , C07C253/00 , C07C
CPC classification number: C07C255/00
-
公开(公告)号：BR8008310A
公开(公告)日：1981-07-07
申请号：BR8008310
申请日：1980-12-18
Applicant: HOECHST AG
Inventor： MUELLER W
IPC: B01J31/00 , C07B61/00 , C07C51/00 , C07C51/373 , C07C59/185 , C07C59/205 , C07C59/347 , C07C59/84 , C07C67/00 , C07C59/76
Abstract: 5-Oxoalkanoic acids are prepared by addition of a ketone containing at least one hydrogen atom in the alpha -position with regard to the keto group, to an alpha , beta -unsaturated acid. As catalysts secondary amines are present.
-
公开(公告)号：ZA792821B
公开(公告)日：1980-07-30
申请号：ZA792821
申请日：1979-06-07
Applicant: HOECHST AG
IPC: C07C43/23 , B01J23/00 , B01J23/56 , B01J23/96 , C07C27/00 , C07C37/00 , C07C37/06 , C07C37/07 , C07C39/08 , C07C39/12 , C07C41/00 , C07C67/00 , C08G , C07C
Abstract: Resorcinols are prepared by converting delta -ketocarboxylic acid esters in the gaseous phase at a temperature from 250 DEG to 500 DEG C. in the presence of hydrogen at a catalyst. The catalyst consists of two components which are prepared separately and combined thereafter. The first component contains at least one compound of a metal of group VIII and/or at least one compound of a metal of group I B supported on one or several carrier materials. The second component contains at least one compound of a metal of group II A and/or IV A and/or III B and/or IV B supported on one or several carrier materials. A particularly preferred catalyst consists of a mixture of equal volume parts of platinum/charcoal as first component and of thorium/charcoal as second component.
-
-
-
-
-
-
-
-
-
Search Results
40
records
(took 0.02 seconds)
