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    Production of aromatic amine-based polyether-ol
    22.
    发明专利
    Production of aromatic amine-based polyether-ol 未知

    公开(公告)号：DE19638257A1

    公开(公告)日：1998-03-26

    申请号：DE19638257

    申请日：1996-09-19

    Applicant: BASF AG

    Inventor： DINSCH STEFAN ,  WINKLER JUERGEN ,  KNORR GOTTFRIED DR

    IPC: C08G18/48 ,  C08G18/50 ,  C08G65/26 ,  C08G81/00

    Abstract: A process for the production of polyether-ols (I) by the addition of ethylene oxide (EO) and optionally higher alkylene oxides (HAO) to (a) aromatic amines, comprising (1) reacting amine (a) with EO in presence of 0-0.05 wt% catalyst and in the absence of substances with terminal hydroxyl groups and/or water (b), then (2) adding a further 0.05-0.5 wt% catalyst plus EO and/or HAO and completing the reaction, optionally with the addition of (b). Also claimed are (i) polyether-ols (I) obtained by this process, (ii) polyisocyanate polyaddition products obtained by reacting (I) with polyisocyanates (II) and optionally chain extenders and/or crosslinkers, catalysts, blowing agents and other additives etc., and (iii) rigid foam containing (I).

    24.
    发明专利
    未知

    公开(公告)号：AT266692T

    公开(公告)日：2004-05-15

    申请号：AT01927689

    申请日：2001-02-22

    Applicant: BASF AG

    Inventor： OSTROWSKI THOMAS ,  HARRE KATHRIN ,  ZEHNER PETER ,  MUELLER JOERN ,  STUETZER DIETER ,  GROSCH GEORG 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.

    25.
    发明专利
    未知

    公开(公告)号：DE50100705D1

    公开(公告)日：2003-11-06

    申请号：DE50100705

    申请日：2001-12-04

    Applicant: BASF AG

    Inventor： MURRAR IMBRIDT ,  PLAUMANN 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.

    26.
    发明专利
    未知

    公开(公告)号：DE59610390D1

    公开(公告)日：2003-06-05

    申请号：DE59610390

    申请日：1996-05-30

    Applicant: BASF AG

    Inventor： DINSCH STEFAN ,  PRETZSCH REGINA ,  WINKLER JUERGEN ,  GUETTES BERND ,  STEINCHEN KARL-HEINZ

    IPC: C08G18/48 ,  C08G18/50 ,  C08G65/26

    Abstract: The prodn. of aromatic polyether-polyols (I) comprises alkoxylation at 70-135 degrees C and 0.1-1.0 MPa of an H-functional starter consisting of a mixt. of at least 95 wt% 2,3- and 3,4- toluylenediamine (TDA), 0.5-4 wt% 2,4- and 2,6-TDA and 0.1-1.5 wt% volatile fractions from TDA prodn. Also claimed are polyols (I) obtd. by this process.

    28.
    发明专利
    未知

    公开(公告)号：AT239046T

    公开(公告)日：2003-05-15

    申请号：AT96108629

    申请日：1996-05-30

    Applicant: BASF AG

    Inventor： DINSCH STEFAN ,  PRETZSCH REGINA ,  WINKLER JUERGEN ,  GUETTES BERND ,  STEINCHEN KARL-HEINZ

    IPC: C08G18/48 ,  C08G18/50 ,  C08G65/26

    Abstract: The prodn. of aromatic polyether-polyols (I) comprises alkoxylation at 70-135 degrees C and 0.1-1.0 MPa of an H-functional starter consisting of a mixt. of at least 95 wt% 2,3- and 3,4- toluylenediamine (TDA), 0.5-4 wt% 2,4- and 2,6-TDA and 0.1-1.5 wt% volatile fractions from TDA prodn. Also claimed are polyols (I) obtd. by this process.

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