公开(公告)号：DE10206989A1

公开(公告)日：2003-08-21

申请号：DE10206989

申请日：2002-02-19

Applicant: BASF AG

Inventor： STORCK SEBASTIAN ,  ROSOWSKI FRANK ,  BAIER MICHAEL ,  BARL MANFRED ,  TENTEN ANDREAS ,  WOLF HANS-JOSEF

IPC: C07D307/89 ,  B01J23/22 ,  B01J35/00 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31

Abstract: Production of phthalic anhydride by gas-phase oxidation of o-xylene or naphthalene in a tubular reactor involves using three or more different catalyst beds with controlled hot-spot temperatures. A method for the production of phthalic anhydride (I) by gas-phase oxidation of xylene and/or naphthalene in a thermostatted tube-bank reactor on 3 or more solid-bed catalysts in 3 different layers involves carrying out the process in such a way that the peak temperature (T2) in the second catalyst layer (in the direction of flow) is up to 50 degrees C below the peak temperature (T1) in the first layer and the peak temperature (T3) in the third layer is 30-100 degrees C below T1.

公开(公告)号：ES2175681T3

公开(公告)日：2002-11-16

申请号：ES98907952

申请日：1998-01-17

Applicant: BASF AG

Inventor： SIGWART CHRISTOPH ,  NARBESHUBER THOMAS ,  ELLER KARSTEN ,  BARL MANFRED ,  FISCHER ROLF ,  GEHRER EUGEN

IPC: C08F4/02 ,  C08F4/20 ,  C08F4/24 ,  C08F10/08 ,  C08F10/10 ,  C08F110/10

Abstract: A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 50 mol % and an average molecular weight Mn of 280-10000 dalton by the cationic polymerization in the liquid phase of isobutene or hydrocarbon mixtures comprising isobutene comprises polymerizing at from -30° C. to +40° C. in the presence of a heterogeneous polymerisation catalyst comprising one or more oxides of the elements of transition groups V and VI of the Periodic Table of the Elements or in the presence of a heterogeneous polymerization catalyst comprising one or more oxidic compounds of one or more elements of transition groups V and VI of the Periodic Table of the Elements supported on a non-zeolitic oxidic support material which is not an oxygen-containing zirconium compound, the catalyst not containing a technically effective amount of halogen.

公开(公告)号：DE59803734D1

公开(公告)日：2002-05-16

申请号：DE59803734

申请日：1998-01-17

Applicant: BASF AG

Inventor： SIGWART CHRISTOPH ,  NARBESHUBER THOMAS ,  ELLER KARSTEN ,  BARL MANFRED ,  FISCHER ROLF ,  GEHRER EUGEN

IPC: C08F4/02 ,  C08F4/20 ,  C08F4/24 ,  C08F10/08 ,  C08F10/10 ,  C08F110/10

Abstract: A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 50 mol % and an average molecular weight Mn of 280-10000 dalton by the cationic polymerization in the liquid phase of isobutene or hydrocarbon mixtures comprising isobutene comprises polymerizing at from -30° C. to +40° C. in the presence of a heterogeneous polymerisation catalyst comprising one or more oxides of the elements of transition groups V and VI of the Periodic Table of the Elements or in the presence of a heterogeneous polymerization catalyst comprising one or more oxidic compounds of one or more elements of transition groups V and VI of the Periodic Table of the Elements supported on a non-zeolitic oxidic support material which is not an oxygen-containing zirconium compound, the catalyst not containing a technically effective amount of halogen.

公开(公告)号：AU8732498A

公开(公告)日：1999-03-01

申请号：AU8732498

申请日：1998-07-23

Applicant: BASF AG

Inventor： SIGWART CHRISTOPH ,  NARBESHUBER THOMAS ,  ARNOLD HEIKO ,  BARL MANFRED ,  FISCHER ROLF HARTMUTH ,  GEHRER EUGEN

IPC: C08F4/22 ,  C08F4/78 ,  C08F10/10 ,  C08F110/10

公开(公告)号：CA2278835A1

公开(公告)日：1998-08-13

申请号：CA2278835

申请日：1998-01-17

Applicant: BASF AG

Inventor： NARBESHUBER THOMAS ,  SIGWART CHRISTOPH ,  BARL MANFRED ,  ELLER KARSTEN ,  FISCHER ROLF ,  GEHRER EUGEN

IPC: C08F4/02 ,  C08F4/20 ,  C08F4/24 ,  C08F10/08 ,  C08F10/10 ,  C08F110/10

Abstract: The invention relates to a method for producing halogen-free, reactive polyisobutene with a terminal double-bond content of over 50 mol % and an average molecular weight of 2,800 - 10,000 Dalton by cationic polymerization of isobutene or isobutene-containing hydrocarbon mixtures in a liquid phase, wherein polmerization is carried out at a temperature of -30 ~C to +40 ~C in the presence of a heterogeneous polymerization catalyst from one or several oxides of the elements of the 5th and 6th subgroup of the periodic table of elements or in the presence of a heterogeneous polymerization catalyst containing one or more oxidic compounds of one or more elements of the 5th and 6th subgroup of the periodic table of elements on an oxygen-containing zircon compound of various non-zeolitic oxidic supporting material, wherein said catalyst contains no technically active quantities of halogen.