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    2.
    发明专利
    未知

    公开(公告)号：DE59814141D1

    公开(公告)日：2008-01-31

    申请号：DE59814141

    申请日：1998-07-28

    Applicant: BASF AG

    Inventor： MUELLER ULRICH DR ,  STEUERLE ULRICH DR

    IPC: C01B37/00 ,  A61K9/52 ,  A61K47/02 ,  A61K47/04 ,  B01J21/04 ,  C01B37/02 ,  C09C1/40 ,  C12N11/14

    Abstract: Preparation of a solid (I) containing silicon dioxide includes the stage of contacting at least one precursor (II) for SiO2 with at least one structure former in a liquid medium. The novelty is that the structure former comprises a polyethyleneimine (PEI) or a mixture of two or more PEI's. Also claimed are (I) obtained by the process; and the use of PEI (or a mixture of PEI's) as structure former in the preparation of solids containing SiO2.

    Preparation of aziridine(s), e.g. ethylene imine
    5.
    发明专利
    Preparation of aziridine(s), e.g. ethylene imine 未知

    公开(公告)号：DE19548337A1

    公开(公告)日：1997-06-26

    申请号：DE19548337

    申请日：1995-12-22

    Applicant: BASF AG

    Inventor： STEUERLE ULRICH DR ,  REUTHER WOLFGANG DR ,  SCHUH GEORG

    IPC: C07D203/02

    Abstract: A method for the preparation of aziridines by catalytic dehydration of alkanolamines in the gas phase - comprises carrying out the dehydration reaction in at least two reactors located one after the other in a cascade so that the conversion rate of alkanolamine in each reactor is 20 - 80 % and the aziridines are removed with byproducts from the reaction mixture downstream of each reactor.

    Preparation of aziridine(s) for use as paper production processing aids
    6.
    发明专利
    Preparation of aziridine(s) for use as paper production processing aids 未知

    公开(公告)号：DE19548317A1

    公开(公告)日：1997-06-26

    申请号：DE19548317

    申请日：1995-12-22

    Applicant: BASF AG

    Inventor： STEUERLE ULRICH DR ,  PROLL THEO DR ,  HUELTENSCHMIDT WILFRIED

    IPC: C07D203/02

    Abstract: Preparation of aziridines involves reacting compounds of formula (I) X-C(R )(R )-C(R )(R )-NHR (I),where R - R = H, 1-8C alkyl or aryl ; R = R , benzyl, 1-8C hydroxyalkyl or 1-8C aminoalkyl ; X = -OSO3H, -OSO2-R, halogen or -O-CO-R ;R = alkyl or aryl; and R = H or 1-8C alkyl, with aqueous alkali(ne earth) metal bases at 80 - 280 deg C and up to 100 bar. The reaction is carried out in at least two reactors located one after the other in a cascade, so that the conversion rate of (I) in each reactor is 20 - 90 % and the aziridines are removed from the reaction mixture downstream of each reactor.

    7.
    发明专利
    未知

    公开(公告)号：DE19514146A1

    公开(公告)日：1996-10-17

    申请号：DE19514146

    申请日：1995-04-15

    Applicant: BASF AG

    Inventor： DINGERDISSEN UWE DR ,  LAUTH GUENTER DR ,  STEUERLE ULRICH DR

    IPC: B01J23/02 ,  B01J23/10 ,  B01J27/18 ,  B01J31/04 ,  C07D203/08 ,  B01J27/182 ,  C07D203/10 ,  C07D203/12

    Abstract: A cup catalyst consisting of a glass substrate, the pores of which have a diameter of at least 10 nm and on which there is a catalytically active layer containing compounds of elements from the alkaline metal, alkali metal earth and/or lanthanide group of the periodic system and process for producing aziridines, preferably ethylene imine, by the intramolecular catalytic dehydration of alkanol amines, preferably ethanol amine, in the gas phase at temperatures of at least 250 DEG C on the above-described cup catalysts and isolation of the aziridines from the reaction mixture.

    10.
    发明专利
    未知

    公开(公告)号：DE4409310A1

    公开(公告)日：1995-09-21

    申请号：DE4409310

    申请日：1994-03-18

    Applicant: BASF AG

    Inventor： DINGERDISSEN UWE DR ,  LAUTH GUENTER DR ,  HARTH KLAUS DR ,  STEUERLE ULRICH DR

    IPC: C07D203/08 ,  B01J23/02 ,  B01J23/10 ,  B01J27/18 ,  B01J35/04 ,  B01J37/02 ,  B01J37/34 ,  C07D203/02 ,  C07D203/10 ,  C07D203/12 ,  C23C14/06 ,  C23C14/34

    Abstract: The invention concerns a shell-type catalyst comprising a metallic carrier material and a catalytically active layer which adheres firmly thereto, which contains elements of the alkali, alkaline earth and/or lanthanide group of the periodic system of elements and which can be obtained by physical or chemical vapour deposition on the carrier material. The invention further concerns the use of shell-type catalysts and a process for preparing aziridines by the catalytic intramolecular splitting off of water in the gaseous phase from compounds of formula (I), in which R , R , R , R and R , independently of one another, signify H or C1 - C4 alkyl and R additionally stands for cyclohexyl, phenyl, benzyl, C1 - C8 hydroxyalkyl or C1 - C8 aminoalkyl.

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