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    51.
    发明专利
    未知

    公开(公告)号：AT283885T

    公开(公告)日：2004-12-15

    申请号：AT01919296

    申请日：2001-02-16

    Applicant: BASF AG

    Inventor： OSTROWSKI THOMAS ,  HARRE KATHRIN ,  GROSCH GEORG HEINRICH ,  WINKLER JUERGEN

    IPC: B01J19/18 ,  B01J27/26 ,  C08G65/26 ,  C08G65/28

    Abstract: Production of polyether polyols by reaction of diols or polyols with a 2-4C alkylene oxide in the presence of a multi-metal cyanide complex catalyst comprises use of a tall vertical cylindrical reactor with a central stirrer and heat exchange plates arranged in the longitudinal direction of the reactor at an angle, alpha , of 0-70 [deg] in the direction of rotation of the stirrer to the reactor radius. A process for the production of polyether polyols (I) by reaction of diols or polyols with ethylene oxide, propylene oxide and/or butylene oxide in the presence of a multi-metal cyanide complex catalyst (II) comprises carrying out the reaction in a tall vertical cylindrical reactor with a central stirrer and heat exchanger plates, through which a heat exchange medium flows and which are arranged essentially in the longitudinal direction of the reactor at an angle alpha , of 0-70 [deg] in the direction of rotation of the stirrer to the reactor radius.

    54.
    发明专利
    未知

    公开(公告)号：DE50102263D1

    公开(公告)日：2004-06-17

    申请号：DE50102263

    申请日：2001-02-22

    Applicant: BASF AG

    Inventor： OSTROWSKI THOMAS ,  HARRE KATHRIN ,  ZEHNER PETER ,  MUELLER JOERN ,  STUETZER DIETER ,  GROSCH HEINRICH ,  WINKLER JUERGEN ,  BAUER STEPHAN

    IPC: B01J27/26 ,  C08G65/26 ,  C08G65/28

    Abstract: Production of polyether polyols comprises use of a multi-metal cyanide complex catalyst in a tall cylindrical reactor having a downward facing spray nozzle in the upper reactor portion, through which the educts and reaction mixture are fed and an outlet, preferably in the lower portion of the reactor to recirculate the reaction mixture via an external circuit and equalizing reservoir. A process for the production of polyether polyols (I) by reaction of diols or polyols with ethylene oxide, propylene oxide and/or butylene oxide in the presence of a multi-metal cyanide complex catalyst (II) comprises carrying out the reaction in a tall cylindrical reactor having a downward facing spray nozzle in the upper reactor portion, through which the educts and reaction mixture are fed, and an outlet, preferably in the lower portion of the reactor, through which the reaction mixture is fed by means of a pump through an external circuit via an equalizing reservoir to the spray nozzle. The external circuit comprises a concentric pipe stretching the entire length of the reactor excluding the reactor ends and contains a heat exchanger integrated within the annulus.

    55.
    发明专利
    未知

    公开(公告)号：DE10240186A1

    公开(公告)日：2004-03-11

    申请号：DE10240186

    申请日：2002-08-28

    Applicant: BASF AG

    Inventor： BAUER STEPHAN ,  RUPPEL RAIMUND ,  BAUM EVA ,  WINKLER JUERGEN ,  BOHRES EDWARD

    IPC: C08G18/48 ,  C08G65/26 ,  C08G65/10

    Abstract: The present invention provides a process for producing low-emission flexible polyurethane foams having a reduced odor and reduced fogging by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups, c) blowing agents wherein polyether alcohols which have been prepared by addition of alkylene oxides onto compounds derived from renewable raw materials using DMC catalysts are used as compounds b) having at least two hydrogen atoms which are reactive toward isocyanate groups.

    56.
    发明专利
    未知

    公开(公告)号：DE10226415A1

    公开(公告)日：2003-12-24

    申请号：DE10226415

    申请日：2002-06-13

    Applicant: BASF AG

    Inventor： RUPPEL RAIMUND ,  BAUM EVA ,  WINKLER JUERGEN ,  BOHRES EDWARD

    IPC: C08G65/26 ,  C08G18/48 ,  C08G71/04

    Abstract: The invention relates to a method for producing polyether alcohols, comprising the following steps: a) reacting a low-molecular alcohol with alkylene oxide in the presence of a basic catalyst in order to form an alkylene oxide addition product having a molecular weight ranging from 200 to 900 g/mol; b) separating the basic catalyst from the product obtained in step a), and; c) reacting the product obtained in step b) with another alkylene oxide in order to produce the desired final product while using at least one DMC catalyst. The inventive method is characterized in that sodium hydroxide is used as the basic catalyst in step a).

    57.
    发明专利
    未知

    公开(公告)号：AT251127T

    公开(公告)日：2003-10-15

    申请号：AT01128812

    申请日：2001-12-04

    Applicant: BASF AG

    Inventor： MURRAR IMBRIDT ,  PLAUMANN HEINZ DR ,  WINKLER JUERGEN ,  SCHUSTER MARITA

    IPC: C07C273/18 ,  C08G18/16 ,  C08G18/40 ,  C08G18/78

    Abstract: Highly functional aromatic polyisocyanates are prepared by reacting aromatic polyisocyanates, if required as a mixture with further mono- and/or polyisocyanates, with addition of catalytic acidic substances and water, by a process wherein the aromatic polyisocyanates used comprise at least one tolylene diisocyanate and the catalytic acidic substance used is at least one alkyl and/or aralkyl phosphate, and the process is carried out in such a way that the water is added with a temperature/time gradient increase from 5 to 60°/hour and until an isocyanate modification of the starting NCO terminal groups from 1 to 80% is established. The highly functional aromatic polyisocyanates prepared by this process are used for the preparation of polyurethane foams, in particular flexible polyurethane foams.

    58.
    发明专利
    未知

    公开(公告)号：DE10064646A1

    公开(公告)日：2002-07-04

    申请号：DE10064646

    申请日：2000-12-22

    Applicant: BASF AG

    Inventor： MURRAR IMBRIDT ,  PLAUMANN HEINZ ,  WINKLER JUERGEN ,  SCHUSTER MARITA

    IPC: C07C273/18 ,  C08G18/16 ,  C08G18/40 ,  C08G18/78 ,  C08G18/76 ,  C08J9/00

    Abstract: Highly functional aromatic polyisocyanates are prepared by reacting aromatic polyisocyanates, if required as a mixture with further mono- and/or polyisocyanates, with addition of catalytic acidic substances and water, by a process wherein the aromatic polyisocyanates used comprise at least one tolylene diisocyanate and the catalytic acidic substance used is at least one alkyl and/or aralkyl phosphate, and the process is carried out in such a way that the water is added with a temperature/time gradient increase from 5 to 60°/hour and until an isocyanate modification of the starting NCO terminal groups from 1 to 80% is established. The highly functional aromatic polyisocyanates prepared by this process are used for the preparation of polyurethane foams, in particular flexible polyurethane foams.

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