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    84.
    发明专利
    未知

    公开(公告)号：DE19805879A1

    公开(公告)日：1999-08-19

    申请号：DE19805879

    申请日：1998-02-13

    Applicant: BASF AG

    Inventor： BAUM EVA ,  ROTERMUND UDO ,  REICHELT MICHAEL ,  JUNG LUDWIG

    IPC: C08G18/66 ,  C08J9/12 ,  C08J9/30 ,  C08G18/08 ,  C08J9/00 ,  C08J9/04 ,  C08K5/54 ,  E04B1/88

    Abstract: Foam stabilizers are used during production of rigid polyurethane foam which consist of alkoxylated organo-silicon compounds with a total silicon content of 5 wt.% or more and a relative weight ratio of (ethylene oxide)/(propylene oxide) (EO/PO) ≥ 70/30. A process for the production of rigid isocyanate-based foam comprises reacting: (a) optionally modified polyisocyanates, with (b) high mol.wt. compound(s) with at least two reactive hydrogen atoms, and optionally (c) low-mol.wt. chain extenders and/or crosslinkers, in presence of (d) carbon dioxide as the sole or additional blowing agent, (e) foam stabilizers, (f) catalysts, and optionally (g) other conventional additive(s). The foam stabilizers (e) comprise alkoxylated organo-silicon compounds with an Si content of 5 wt.% or more and EO/PO wt. ratio of ≥ 70/30

    85.
    发明专利
    未知

    公开(公告)号：DE50308189D1

    公开(公告)日：2007-10-25

    申请号：DE50308189

    申请日：2003-07-24

    Applicant: BASF AG

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

    IPC: C08G18/48 ,  C08G18/08 ,  C08G65/26

    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.

    86.
    发明专利
    未知

    公开(公告)号：AT373031T

    公开(公告)日：2007-09-15

    申请号：AT03790810

    申请日：2003-07-24

    Applicant: BASF AG

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

    IPC: C08G18/48 ,  C08G18/08 ,  C08G65/26

    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.

    88.
    发明专利
    未知

    公开(公告)号：AT366273T

    公开(公告)日：2007-07-15

    申请号：AT04797695

    申请日：2004-11-06

    Applicant: BASF AG

    Inventor： OSTROWSKI THOMAS ,  RUPPEL RAIMUND ,  BAUM EVA ,  HARRE KATHRIN

    IPC: C08G65/00 ,  C07C43/11 ,  C08G65/10 ,  C08G65/12 ,  C08G65/26

    Abstract: The invention relates to a process for the continuous preparation of polyether alcohols by reaction of alkylene oxides with H-functional starter substances in the presence of DMC catalysts, which comprises, at the beginning of the process a) firstly placing initial charge material and DMC catalyst in a reactor, b) metering in alkylene oxide so that the metering rate which is maintained for continuous operation of the reactor is reached in a time of from 100 to 3000 seconds, c) metering in starter substance during or after step b) so that the metering rate which is maintained for continuous operation of the reactor is reached in a time of from 5 to 500 seconds, d) after the fill level in the reactor which is desired for continuous operation of the reactor has been reached, taking product off continuously from the reactor while at the same time metering in starter substance and alkylene oxides in such an amount that the fill level in the reactor remains constant and metering in DMC catalyst so that the catalyst concentration necessary for continuous operation of the reactor is maintained in the reactor.

    89.
    发明专利
    未知

    公开(公告)号：DE50301943D1

    公开(公告)日：2006-01-19

    申请号：DE50301943

    申请日：2003-06-18

    Applicant: BASF AG

    Inventor： BOHRES EDWARD ,  FRANKE DIRK ,  STOESSER MICHAEL ,  RUPPEL RAIMUND ,  BAUM EVA ,  HARRE KATHRIN

    IPC: C08G65/12 ,  B01J27/26 ,  B01J37/03 ,  C08G18/48 ,  C08G65/26

    Abstract: The invention relates to a process for preparing polyether alcohols by addition of alkylene oxides onto H-functional starter substances using multimetal cyanide compounds as catalysts, wherein the multimetal cyanide compound is prepared by a process comprising the steps: a) adding a metal salt solution to a cyanometalate solution at a specific stirring power epsilon in the range from 0.05 to 10 W/l, preferably from 0.4 to 4 W/l, a temperature in the range from 0° C. to 100° C., preferably from 20° C. to 60° C., and an addition time of from 5 to 120 minutes, b) reducing the specific stirring power epsilon to a value in the range from 0.03 to 0.8 W/l and at the same time adding a surface-active agent, c) heating the solution while stirring at a specific stirring power epsilon of from 0.03 to 0.8 W/l, to a temperature of not more than 100° C., preferably in the range from 55° C. to 75° C., d) adding further metal salt solution while stirring at a specific stirring power epsilon of from 0.03 to 0.8 W/l, e) when the conductivity begins to drop, dispersing the solid, for example by stirring while increasing the specific stirring power epsilon to >0.7 W/l or by installation of a pumped circuit with an appropriate pump or by means of a high-speed stirrer, f) stirring at the specific stirring power epsilon of step e) until the conductivity or the pH remains constant, g) separating off the multimetal cyanide compound and washing it with water and, if desired, h) drying the catalyst.

    90.
    发明专利
    未知

    公开(公告)号：DE50301697D1

    公开(公告)日：2005-12-22

    申请号：DE50301697

    申请日：2003-06-06

    Applicant: BASF AG

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

    IPC: C08G65/26

    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).

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