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公开(公告)号：CA1128066A
公开(公告)日：1982-07-20
申请号：CA351989
申请日：1980-05-15
Applicant: HOECHST AG
Inventor： JENSEN HARALD , SCHMIDT ERWIN , MITZLAFF MICHAEL , CRAMER JUERGEN , PISTORIUS RUDOLF , PIETSCH HARTMUT , DEHMER KLAUS
IPC: C07C67/00 , C07C231/00 , C07C231/08 , C07C231/12 , C07C103/365
Abstract: N-Vinyl-N-alkyl-carboxylic acid amides are prepared, starting from N-ethyl-carboxylic acid amides, in a 3-stage process consisting of the following stages:a) anodic alkoxylation of the N-ethyl-carboxylic acid amides to give N-.alpha.-alkoxyethyl-carboxylic acid amides:b) alkylation of these N-.alpha.-alkoxyethyl-carboxylic acid amides with an alkyl halide or dialkyl sulfate in an alkaline medium to give N-.alpha.-alkoxyethyl-n-alkyl-carboxylic acid amides; andc) splitting off of alcohol from the products of stage b) by heating to temperatures between about 60 and about 350.degree.C. Instead of stages b) and c), it is also possible to carry out the following stages after stage a): b1) splitting off of alcohol from the N-.alpha.-alkoxyethyl-carboxylic acid amides obtained in stage a) by heating to temperatures of about 60 to about 600.degree.C, to give N-vinyl-carboxylic acid amider; and c1) alkylation of these N-vinyl-carboxylic acid amides by reaction with on alkylating agent of the same type in stage b) in an alkaline medium. The N-vinyl-N-alkyl-carboxylic acid amides obtained by the process are valuable ? ? ? .
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公开(公告)号：CA2161943A1
公开(公告)日：1996-05-03
申请号：CA2161943
申请日：1995-11-01
Applicant: HOECHST AG
Inventor： BERENBOLD HELMUT , BORCHERS GEORG , CRAMER JUERGEN , NOELTNER GERHARD , REINHARDT GERD , SCHULER WILFRIED
Abstract: The present invention relates to a process for the preparation of storage-stable granules essentially comprising a bleaching activator and an inorganic binder material, which comprises the process steps: a) mixing of a dry bleaching activator with a dry inorganic binder material, b) pressing of this mixture to give relatively large agglomerates and c) comminution of these agglomerates to the desired particle size. The invention furthermore relates to the use of the granules prepared by the processes in detergents, cleaning compositions, bleaching compositions and disinfectants.
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公开(公告)号：BR9505059A
公开(公告)日：1997-10-14
申请号：BR9505059
申请日：1995-11-01
Applicant: HOECHST AG
Inventor： BERENBOLD HELMUT , BORCHERS GEORG , CRAMER JUERGEN , NOELTNER GERHARD , REINHARDT GERD , SCHULER WILFRIED
Abstract: Prepn. of a granulate which is stable during storage and consists essentially of a bleach activator and an inorganic binder, comprises the following steps: (A) mixing a dry bleach activator with a dry inorganic binder; (B) compressing the mixt. to form larger agglomerates; and (C) crushing the agglomerates to give the desired particle size.
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公开(公告)号：DK655689A
公开(公告)日：1990-06-23
申请号：DK655689
申请日：1989-12-21
Applicant: HOECHST AG
Inventor： CRAMER JUERGEN , KRAMER HELMUT , NOELTNER GERHARD , SCHULER WILFRIED
Abstract: A pulverulant, dry bleach activator, in particular tetraacetylethylenediamine is first moistened with water and then mixed with a dry auxiliary, in particular, with Na carboxymethylcellulose. This mixture is then granulated.
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Patent Agency Ranking
公开(公告)号：DK655689D0
公开(公告)日：1989-12-21
申请号：DK655689
申请日：1989-12-21
Applicant: HOECHST AG
Inventor： CRAMER JUERGEN , KRAMER HELMUT , NOELTNER GERHARD , SCHULER WILFRIED
Abstract: A pulverulant, dry bleach activator, in particular tetraacetylethylenediamine is first moistened with water and then mixed with a dry auxiliary, in particular, with Na carboxymethylcellulose. This mixture is then granulated.
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公开(公告)号：CA1114775A
公开(公告)日：1981-12-22
申请号：CA310411
申请日：1978-08-31
Applicant: HOECHST AG
Inventor： CRAMER JUERGEN , LINDNER WERNER
Abstract: Electrochemical apparatus is provided for use in a bipolar arrangement. The bipolar electrode is preferably a series of parallel plates each contained in a peripheral frame of electrically non-conductive material, preferably polyolefin. The plates are preferably of glass-like carbon coated on the cathodic side with a material to reduce the hydrogen over voltage characteristics.
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公开(公告)号：CA1111370A
公开(公告)日：1981-10-27
申请号：CA310410
申请日：1978-08-31
Applicant: HOECHST AG
Inventor： CRAMER JUERGEN
Abstract: PROCESS FOR THE MANUFACTURE OF p-BENZOQUINONE-DIKETALS of the disclosure: p-Benzoquinone-diketals of the formula I (I) in which R is H, (C1-C4)-alkyl or halogen, and R1 is (C1 C4)-alkyl, by anodic oxidation of benzene or an alkoxybenzene of the formulae (II) or (III) in which R and R1 are as defined in sub formula I, are prepared in methanol containing less than about 5 % by weight of water, in the presence of at least one alkali metal fluoride, ammonium fluoride and/or phosphonium fluoride as supporting electrolyte and a pH maintained below 7 by addition of HF. Especially advantageously, the anodic oxidation is carried out in a continuous-flow cell with the use of bipolar electrodes of glass-like carbon the cathode face of which is coated with a material reducing the hydrogen overvoltage, preferably titanium carbide.
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8.发明专利
公开(公告)号：IE66736B1
公开(公告)日：1996-02-07
申请号：IE417489
申请日：1989-12-21
Applicant: HOECHST AG
Inventor： CRAMER JUERGEN , KRAMER HELMUT , NOELTNER GERHARD , SCHULER WILFRIED
Abstract: A pulverulant, dry bleach activator, in particular tetraacetylethylenediamine is first moistened with water and then mixed with a dry auxiliary, in particular, with Na carboxymethylcellulose. This mixture is then granulated.
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公开(公告)号：CA1135656A
公开(公告)日：1982-11-16
申请号：CA351988
申请日：1980-05-15
Applicant: HOECHST AG
Inventor： MITZLAFF MICHAEL , CRAMER JUERGEN , PISTORIUS RUDOLF
Abstract: HOE 79/F 118 PROCESS FOR THE MANUFACTURE OF N-?-ALKOXYETHYL- CARBOXYLIC ACID AMIDES : N-?-alkoxyethyl-carboxylic acid amides are prepared by anodic alkoxylation of N ethyl-carboxylic acid amides with an alcohol in an electrolytic cell using vitreous carbon as anode material and at least one alkali metal and/or tetraalkyl-ammonium alkosulfate as supporting electrolyte.
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