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    3.
    发明专利
    未知

    公开(公告)号：AT208363T

    公开(公告)日：2001-11-15

    申请号：AT98116052

    申请日：1998-08-26

    Applicant: BASF AG

    Inventor： TELES JOAQUIM HENRIQUE DR ,  RIEBER NORBERT DR ,  BREUER KLAUS DR ,  DEMUTH DIRK DR ,  HIBST HARTMUT PROF DR ,  KAESHAMMER STEFAN DR ,  ETZRODT HEINZ DR ,  KAISER WULF DR

    IPC: B01J23/06 ,  C07B61/00 ,  C07C41/08 ,  C07C41/28 ,  C07C45/51 ,  C07C49/203

    Abstract: Unsaturated ketones, comprising optionally substituted but-3-enyl and/or buta-2.3-dienyl methyl ketones, are prepared by: (a) reacting allyl alcohols and/or propargyl alcohols with isopropenyl ethers, with formation of ketals as by-product; (b) preparing isopropenyl ethers by catalytic gas phase reaction of ketals with propyne and/or allene; and (c) feeding the ketal from stage (a) into stage (b). The but-3-enyl methyl ketones of formula (Ia) and but-2,3-dienyl methyl ketones of formula (Ib) formed, allyl alcohols of formula (IIa) and/or propargyl alcohols of formula (IIb) and isopropenyl ethers (III) used as starting materials are ketals (IV). R1, R2, R3, R4, R5 = H or (cyclo)alkyl, (cyclo)alkenyl or ar(alk)yl (optionally containing O); or R1R2 = 5-6-membered ring; and R6 = 1-4C alkyl. (III) are prepared by the gas phase reaction of (IV) and propyne or allene at elevated temperature in the presence of a heterogeneous catalyst containing Zn or Cd plus Si and O.

    Preparation of methacrylic acid
    4.
    发明专利
    Preparation of methacrylic acid 未知

    公开(公告)号：DE19843329A1

    公开(公告)日：1999-04-08

    申请号：DE19843329

    申请日：1998-09-22

    Applicant: BASF AG

    Inventor： ROSOWSKI FRANK DR ,  HIBST HARTMUT PROF DR ,  SCHLOEGL ROBERT PROF DR ,  HEREIN DANIEL DR ,  BERNDT SILKE

    IPC: B01J27/19 ,  B01J27/199 ,  C07C51/25 ,  C07C57/055

    Abstract: Preparation of methacrylic acid by the catalyzed gas phase-oxidation of methacrolein comprises using a multi-metal oxide composition. Preparation of methacrylic acid by the catalyzed gas phase-oxidation of methacrolein comprises using a multi-metal oxide composition of formula M a-bM bM lM 12-cM cOd.e(MoP2Of).g(SbOh).i(SOk).l(H2O).(I) M = Na, K, Rb, Cs and/or NH4 ; M = Cu and/or Ag; M = P; M = Mo and/or W; M = Nb, V and/or Ta; a = 2.7-3.3; b and c = 0-2; d = 0-0.6; g = 0-3; d, f, h and k = numbers dependent on the valency of O; i = 0-0.1; l = 0-03. An Independent claim is included for the composition.

    PREPARATION OF MALEIC ANHYDRIDE
    8.
    发明专利
    PREPARATION OF MALEIC ANHYDRIDE 未知

    公开(公告)号：MY129066A

    公开(公告)日：2007-03-30

    申请号：MYPI20022821

    申请日：2002-07-26

    Applicant: BASF AG

    Inventor： HIBST HARTMUT PROF DR ,  NOE RALF DR ,  EXNER KAI MICHAEL DR ,  DUDA MARK DR

    IPC: C07D307/60 ,  C07B61/00

    Abstract: A PROCESS FOR PREPARING MALEIC ANHYDRIDE BY HETEROGENEOUSLY CATALYZED GAS-PHASE OXIDATION OF AN N-BUTENE-CONTAINING HYDROCARBON STREAM BY MEANS OF OXYGEN-CONTANING GASES IN A SHELL-AND-TUBE REACTOR HAVING TWO SUCCESSIVE REACTION ZONES, WHERE THE FIRST, FEED-SIDE REACTION ZONE CONTAINS AT LEAST ONE CATALYST WHICH IS SUITABLE FOR THE OXYDEHYDROGENATION OF N-BUTENES TO 1, 3-BUTADIENE AND THE SECOND, PRODUCT-SIDE REACTION ZONE CONTAINS AT LEAST ONE CATALYST WHICH IS SUITABLE FOR THE OXIDATION OF1, 3-BUTADIENE TO MALEIC ANHYDRIDE, IS CARRIED OUT USING A SHELL-AND-TUBE REACTOR WHICH HAS AT LEAST ONE HEAT TRANSFER MEDIUM CIRCUIT IN THE REGION OF THE FIRST, FEED-SIDE REACTION ZONE AND AT LEAST ONE FURTHER HEAT TRANSFER MEDIUM CIRCUIT IN THE REGION OF THE SECOND, PRODUCT-SIDE REACTION ZONE.

    9.
    发明专利
    未知

    公开(公告)号：DE59810191D1

    公开(公告)日：2003-12-18

    申请号：DE59810191

    申请日：1998-06-02

    Applicant: BASF AG

    Inventor： TELES DR ,  RIEBER DR ,  BREUER DR ,  DEMUTH DR ,  HIBST HARTMUT PROF DR ,  HAGEMEYER DR

    IPC: B01J23/08 ,  B01J21/16 ,  B01J23/06 ,  B01J37/03 ,  C01B33/20 ,  C07B41/00 ,  C07B61/00 ,  C07C41/06 ,  C07C41/08 ,  C07C41/54 ,  C07C43/15 ,  C07C43/16 ,  C07C43/303

    Abstract: An alkaline silicate suspension is reacted with an aqueous solution of a zinc salt at normal pressure and at temperatures between 50 degrees C and the boiling point of the suspension arising. It is alternatively reacted under hydrothermal conditions at the suspension boiling point up to 250 degrees C. Aqueous pH value is held at 4-9.5 throughout. The Zn/Si atom ratio is kept within 1.6-2.5. Preferred Features: From the product, a suitable zinc silicate, is formed. This has the hemimorphite structure as claimed, the composition Zn4Si2O7(OH)2-2yOy.xH2O, where x and y are between 0 and 1. To this end the product is roasted at temperatures of 70-600 degrees C. pH is maintained in the region 5.5-8 or 6-7.5. When reactin other salts, 0-20 mol% of the following group A, referred to zinc, is used with 0-20 mol% of the following group B, referred to silicon, (i.e. the elements in the hemimorphite structure described). Group A comprises: beryllium, magnesium, calcium, strontiu barium, manganese, iron, cobalt, nickel, copper, cadmium and mercury. Group B comprises: titanium, zirconium, hafnium, germanium tin and lead

    10.
    发明专利
    未知

    公开(公告)号：DE19726670A1

    公开(公告)日：1998-12-24

    申请号：DE19726670

    申请日：1997-06-23

    Applicant: BASF AG

    Inventor： TELES JOAQUIM HENRIQUE DR ,  RIEBER NORBERT DR ,  BREUER KLAUS ,  DEMUTH DIRK DR ,  HIBST HARTMUT PROF DR ,  HAGEMEYER ALFRED DR

    IPC: B01J23/08 ,  B01J21/16 ,  B01J23/06 ,  B01J37/03 ,  C01B33/20 ,  C07B41/00 ,  C07B61/00 ,  C07C41/06 ,  C07C41/08 ,  C07C41/54 ,  C07C43/15 ,  C07C43/16 ,  C07C43/303 ,  C07C43/14 ,  C07C43/162 ,  C07C43/166 ,  C07C69/007 ,  C07C67/04

    Abstract: An alkaline silicate suspension is reacted with an aqueous solution of a zinc salt at normal pressure and at temperatures between 50 degrees C and the boiling point of the suspension arising. It is alternatively reacted under hydrothermal conditions at the suspension boiling point up to 250 degrees C. Aqueous pH value is held at 4-9.5 throughout. The Zn/Si atom ratio is kept within 1.6-2.5. Preferred Features: From the product, a suitable zinc silicate, is formed. This has the hemimorphite structure as claimed, the composition Zn4Si2O7(OH)2-2yOy.xH2O, where x and y are between 0 and 1. To this end the product is roasted at temperatures of 70-600 degrees C. pH is maintained in the region 5.5-8 or 6-7.5. When reactin other salts, 0-20 mol% of the following group A, referred to zinc, is used with 0-20 mol% of the following group B, referred to silicon, (i.e. the elements in the hemimorphite structure described). Group A comprises: beryllium, magnesium, calcium, strontiu barium, manganese, iron, cobalt, nickel, copper, cadmium and mercury. Group B comprises: titanium, zirconium, hafnium, germanium tin and lead

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