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    21.
    发明专利
    未知

    公开(公告)号：AT384710T

    公开(公告)日：2008-02-15

    申请号：AT05798084

    申请日：2005-10-20

    Applicant: BASF AG

    Inventor： SIEGERT MARKUS ,  LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN

    IPC: C07D323/06

    Abstract: Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

    22.
    发明专利
    未知

    公开(公告)号：AT381527T

    公开(公告)日：2008-01-15

    申请号：AT04727886

    申请日：2004-04-16

    Applicant: BASF AG

    Inventor： KLASS KATRIN ,  BECKER HEIKE ,  VOGELSANG REGINA ,  HAUK ALEXANDER ,  SIEGERT MARKUS ,  HENKELMANN JOCHEM

    IPC: C07C41/08 ,  C07C43/16

    Abstract: A process for continuously preparing methyl vinyl ether by reacting methanol with ethyne in the liquid phase in the presence of a basic alkali metal or alkaline earth metal compound at a temperature of from 40 to 300° C. and a pressure of from 0.1 to 5 MPa abs, by carrying out the reaction in the absence of a continuous gas phase and at a methyl vinyl ether concentration in the entire liquid phase of

    PROCESS FOR PRODUCING TRIOXANE AND AT LEAST ONE COMONOMER
    24.
    发明专利
    PROCESS FOR PRODUCING TRIOXANE AND AT LEAST ONE COMONOMER 未知

    公开(公告)号：CA2627080A1

    公开(公告)日：2007-05-10

    申请号：CA2627080

    申请日：2006-10-27

    Applicant: BASF AG

    Inventor： STROEFER ECKHARD ,  SIEGERT MARKUS ,  LANG NEVEN ,  BOEHLING RALF ,  STAMMER ACHIM ,  OLDENBURG JAN

    IPC: C08G2/10 ,  C07D317/12 ,  C07D319/00 ,  C07D323/06

    Abstract: The invention relates to a process for producing trioxane and at least one comonomer for producing (co)polymers on a trioxane basis, in which, in a first step, formaldehyde and at least one comonomer starting material are reacted in aqueous solution to form trioxane and comonomer, wherein a reaction mixture A1 containing trioxane, comonomer, formaldehyde, water and if appropriate comonomer starting material is obtained. In a second step, the reaction mixture A1 is distilled in a first distillation stage at a first pressure, wherein a trioxane- and comonomer-enriched stream B1 and an essentially water- , formaldehyde- and if appropriate comonomer starting material-containing stream B2 are obtained. In a third step, the stream B1 is distilled in a second distillation stage at a pressure which is above the pressure of the first distillation stage, wherein a trioxane-, comonomer- and water-containing stream C1 and a product stream C2 essentially consisting of comonomer and trioxane are obtained.

    25.
    发明专利
    未知

    公开(公告)号：DE102005037294A1

    公开(公告)日：2007-02-15

    申请号：DE102005037294

    申请日：2005-08-08

    Applicant: BASF AG

    Inventor： LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  HASSE HANS ,  GRUETZNER THOMAS ,  BLAGOV SERGEJ

    IPC: C07D323/06

    Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A 2 comprising trioxane, water and formaldehyde. Stream A 2 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane, and the stream B 2 consisting substantially of water and formaldehyde. Stream B 1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C 2 consisting substantially of trioxane, and a stream C 1 comprising trioxane, water and formaldehyde. Stream C 1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D 1 comprising trioxane, water and formaldehyde, and a stream D 2 consisting substantially of water.

    28.
    发明专利
    未知

    公开(公告)号：NO20062493L

    公开(公告)日：2006-06-09

    申请号：NO20062493

    申请日：2006-05-31

    Applicant: BASF AG

    Inventor： STROFER ECKHARD ,  WEBER MARKUS ,  OLBERT GERHARD ,  JOHANN THORSTEN ,  LANG NEVEN ,  FIENE MARTIN ,  SIEGERT MARKUS

    IPC: B01J19/24 ,  B01J8/02 ,  B01J8/04 ,  C07C45/38 ,  F28D9/00

    Abstract: A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor ( 1 ) having heat-exchange plates ( 2 ) which are arranged in the longitudinal direction of the reactor ( 1 ) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities ( 3, 4 ) for the heat transfer medium to the heat-exchange plates ( 2 ) and also gaps ( 5 ) between heat-exchange plates ( 2 ) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.

    Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification
    29.
    发明专利
    Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification 未知

    公开(公告)号：AU2004309046A1

    公开(公告)日：2005-07-14

    申请号：AU2004309046

    申请日：2004-12-21

    Applicant: BASF AG

    Inventor： STROEFER ECKHARD ,  SIEGERT MARKUS ,  HASSE HANS ,  STAMMER ACHIM ,  LANG NEVEN ,  FRIESE THORSTEN

    IPC: C07D323/06

    Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.

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