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    1.
    发明专利
    未知

    公开(公告)号：FI88712B

    公开(公告)日：1993-03-15

    申请号：FI890483

    申请日：1989-02-01

    Applicant: HOECHST AG

    Inventor： AIGNER RUDOLF ,  MUELLER GUENTHER ,  MUELLER RAINER ,  REUNER HORST

    IPC: C07C303/24 ,  C07C303/44 ,  C07C305/04 ,  C07C305/06 ,  C07C305/00 ,  C07C305/10 ,  C07C305/18 ,  C09K23/02 ,  C11D3/34 ,  C07B45/00

    Abstract: A process for the preparation of sulfated alkanol oxethylates or alkylphenol oxethylates is described. After completion of the reaction with SO3, 0.1 to 0.5% by weight, relative to the alkanol oxethylates or alkylphenol oxethylates employed, of at least one of the following compounds: water, ethanol, 1-propanol, 2-propanol or n-heptane are admixed to the reaction mixture and liquid and gas are subsequently separated at a temperature of 20 DEG to 60 DEG C. The liquid is then neutralized with aqueous alkali as customary and leads to ether sulfate/water mixtures with considerably reduced contents of 1,4-dioxane which can either be used without further aftertreatment or with a considerably reduced outlay in terms of aftertreatment as personal hygiene agents and for various other purposes.

    2.
    发明专利
    未知

    公开(公告)号：NO169838C

    公开(公告)日：1992-08-12

    申请号：NO890428

    申请日：1989-02-02

    Applicant: HOECHST AG

    Inventor： AIGNER RUDOLF ,  MUELLER GUENTHER ,  MUELLER RAINER ,  REUNER HORST

    IPC: C07C303/24 ,  C07C303/44 ,  C07C305/00 ,  C07C305/04 ,  C07C305/06 ,  C07C305/10 ,  C07C305/18 ,  C09K23/02 ,  C11D3/34

    Abstract: A process for the preparation of sulfated alkanol oxethylates or alkylphenol oxethylates is described. After completion of the reaction with SO3, 0.1 to 0.5% by weight, relative to the alkanol oxethylates or alkylphenol oxethylates employed, of at least one of the following compounds: water, ethanol, 1-propanol, 2-propanol or n-heptane are admixed to the reaction mixture and liquid and gas are subsequently separated at a temperature of 20 DEG to 60 DEG C. The liquid is then neutralized with aqueous alkali as customary and leads to ether sulfate/water mixtures with considerably reduced contents of 1,4-dioxane which can either be used without further aftertreatment or with a considerably reduced outlay in terms of aftertreatment as personal hygiene agents and for various other purposes.

    PROCESS FOR THE MANUFACTURE OF N,N,N',N'- TETRAACETYLETHYLENEDIAMINE
    5.
    发明专利
    PROCESS FOR THE MANUFACTURE OF N,N,N',N'- TETRAACETYLETHYLENEDIAMINE 未知

    公开(公告)号：CA1110660A

    公开(公告)日：1981-10-13

    申请号：CA325465

    申请日：1979-04-12

    Applicant: HOECHST AG

    Inventor： MUELLER-SCHIEDMAYER GUENTHER ,  AIGNER RUDOLF

    IPC: C07C231/00 ,  C07B20060101 ,  C07C20060101 ,  C07C67/00 ,  C07C231/08 ,  C07C233/91 ,  C07C103/90

    Abstract: PROCESS FOR THE MANUFACTURE OF N,N,N',N'-TETRA- ACETYLETHYLENEDIAMINE of the disclosure: The invention provides an improved process for the manufacture of N,N,N',N'-tetraacetylethylenediamine by acetylation of N,N'-diacetylethylenediamine with acetic anhydride, by using these two starting components in a weight ratio of from 1:1 to 1:10, stopping the acetylation before attaining the reaction equilibrium between N,N'-di-acetylethylenediamine and N,N,N',N'-tetraacetylethylene-diamine, preferably after having attained a conversion rate of from 20 to 70 mol % of tetraacetylethylenediamine, relative to diacetylethylenediamine, purifying the reaction mixture in order to remove the dyeing impurities, and recycling to the acetylation the purified, incompletely reacted components. Purification may be carried out by vacuum distillation or be means of an adsorbent, for example bleaching earth or active charcoal. Optionally, from 0.01 to 0.3 part by weight of ketene per part by weight of diacetylethylenediamine are added to the starting components. The process may be carried out batchwise or continuously, and it gives a practically colorless product with high yield (more than 97 %).

    PROCESS FOR PREPARING N,N,N',N'-TETRA-ACETYLETHYLENE DIAMINE
    6.
    发明专利
    PROCESS FOR PREPARING N,N,N',N'-TETRA-ACETYLETHYLENE DIAMINE 未知

    公开(公告)号：DE2960395D1

    公开(公告)日：1981-09-17

    申请号：DE2960395

    申请日：1979-04-06

    Applicant: HOECHST AG

    Inventor： MULLER-SCHIEDMAYER GUNTHER DR ,  AIGNER RUDOLF

    IPC: C07C231/00 ,  C07B20060101 ,  C07C20060101 ,  C07C67/00 ,  C07C231/08 ,  C07C233/91 ,  C07C102/00

    Abstract: The invention provides an improved process for the manufacture of N,N,N',N'-tetraacetylethylenediamine by acetylation of N,N'-diacetylethylenediamine with acetic anhydride, by using these two starting components in a weight ratio of from 1:1 to 1:10, stopping the acetylation before attaining the reaction equilibrium between N,N'-diacetylethylenediamine and N,N,N',N'-tetraacetylethylenediamine, preferably after having attained a conversion rate of from 20 to 70 mol % of tetraacetylethylenediamine, relative to diacetylethylenediamine, purifying the reaction mixture in order to remove the dyeing impurities, and recycling to the acetylation the purified, incompletely reacted components. Purification may be carried out by vacuum distillation or by means of an adsorbent, for example bleaching earth or active charcoal. Optionally, from 0.01 to 0.3 part by weight of ketene per part by weight of diacetylethylenediamine are added to the starting components. The process may be carried out batchwise or continuously, and it gives a practically colorless product with high yield (more than 97%).

    7.
    发明专利
    未知

    公开(公告)号：ES2055749T3

    公开(公告)日：1994-09-01

    申请号：ES89101596

    申请日：1989-01-31

    Applicant: HOECHST AG

    Inventor： AIGNER RUDOLF ,  MULLER GUNTHER DR ,  MULLER RAINER ,  REUNER HORST

    IPC: C07C303/24 ,  C07C303/44 ,  C07C305/04 ,  C07C305/06 ,  C07C305/00 ,  C07C305/10 ,  C07C305/18 ,  C09K23/02 ,  C11D3/34

    Abstract: A process for the preparation of sulfated alkanol oxethylates or alkylphenol oxethylates is described. After completion of the reaction with SO3, 0.1 to 0.5% by weight, relative to the alkanol oxethylates or alkylphenol oxethylates employed, of at least one of the following compounds: water, ethanol, 1-propanol, 2-propanol or n-heptane are admixed to the reaction mixture and liquid and gas are subsequently separated at a temperature of 20 DEG to 60 DEG C. The liquid is then neutralized with aqueous alkali as customary and leads to ether sulfate/water mixtures with considerably reduced contents of 1,4-dioxane which can either be used without further aftertreatment or with a considerably reduced outlay in terms of aftertreatment as personal hygiene agents and for various other purposes.

    PROCESS FOR THE PREPARATION OF DIALKYLAMINOPROPANEDIOL
    9.
    发明专利
    PROCESS FOR THE PREPARATION OF DIALKYLAMINOPROPANEDIOL 未知

    公开(公告)号：CA2060049A1

    公开(公告)日：1992-07-29

    申请号：CA2060049

    申请日：1992-01-27

    Applicant: HOECHST AG

    Inventor： AIGNER RUDOLF ,  MUELLER GUENTER ,  SCHOLZ HANS JUERGEN ,  WEHLE DETLEF

    IPC: C07C213/02 ,  C07C213/04 ,  C07C215/10

    Abstract: - 1 - HOE 91/F 901 of the disclosure Process for the preparation of dialkylaminopropanediol The novel process is based on the reaction of a dialkylamine, preferably dimethylamine or diethylamine, with a monohalopropanediol, preferably monochloropropanediol, in the presence of water. The reaction is carried out in the presence of 25 to 70% by weight of water and at a temperature of 20 to 80.degree.C, the dialkylamine being employed in an amount of at least 2.5 mol per mole of monohalopropanediol. Using the novel process, a high space-time yield and also a high chemical yield of virtually pure dialkylaminopropanediol are obtained.

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