Basf Aktiengesellschaft

Basf Se Corporation

Kathrin Harre

Stephan Bauer

Reinhard Lorenz

Dieter Junge

Eva Baum

Jorg Erbes

Thomas Ostrowski

Georg Heinrich Grosch

Roland Reichenbach-Klinke

Achim Loeffler

Björn Langlotz

Raimund Ruppel

Reinhold J Leyrer

Marcus Guzmann

Stefan Friedrich

Kati Schmidt

Manfred Schuhbeck

Markus Klumpe

Thomas Pfeuffer

J&ouml;rg Erbes

Yulia Fogel

Peter Gaeberlein

Andrea Orleans

Edward Michael Dexheimer

Matthias Zipplies

Ulrich Annen

Dirk Meckelnburg

J&uuml;rgen Winkler

Marcus Rösch

Eckhard Stroefer

Christian Bittner

Peter Zehner

Hartwig Voss

Oliver Bey

Christian E Spindler

Wolfgang Loth

Kai Thiele

Andreas Brodhagen

Ralf Boehling

Veit Stegmann

Markus Rösch

Michael Stoesser

Gerrit Waters

Thorsten Friese

Regina Hendreich

Bjoern Langlotz

Inge Rotermund

Stefan Dinsch

Werner Weinle

Jörg Erbes

Michael Triller

Benjamin Wenzke

Regina Pretzsch

Juergen Winkler

Gerlinde Tischer

Vinit Chilekar

Michael Pcolinski

Markus Roesch

Ulrike Mahn

Koenraad Vandewalle

Nicole Meier

Christoph Schnorpfeil

Gerd H&ouml;ppner

Fatemeh Ahmadnian

Johannes Adam

Ronald Adelmann

Dieter St&uuml;tzer

J&ouml;rn M&uuml;ller

Peter De Vocht

Matthias Schopohl

Christoph Grossmann

Renata Jovanovic

Susanne Szeschkus

Elke Bleuel

Stephan Herwig

Peter Groer

Paul Kierkus

Hans-Jürgen Pallasch

Gerd Höppner

Sascha Bergmann

Jürgen Winkler

Achim Loffler

Fatemeh Admadnian

Dirk Leys

Ralf Bohling

Ulrich Kammel

Milind Joshi

Axel Schimpf

Christian Spindler

Hans Volkmar Schwarz

Ralf BÖHLING

The present invention relates to a process for preparing hydrophobically associating macromonomers M and to the novel macromonomers prepared by means of the process according to the invention. The macromonomers M comprise a copolymerizable, ethylenically unsaturated group and a polyether structure in block form, the latter consisting of a polyethyleneoxy block and a hydrophobic polyalkyleneoxy block consisting of alkyleneoxy units having at least 4 carbon atoms. Optionally, the macromonomers M may have a terminal polyethyleneoxy block. The macromonomers prepared by the process according to the invention are suitable for reaction with further monomers, especially with acrylamide, to give a water-soluble, hydrophobically associating copolymer.

Process for preparing a macromonomer

Water-soluble, hydrophobically associating copolymers which comprise new types of hydrophobically associating monomers. The monomers comprise an ethylenically unsaturated group and a polyether group with block structure comprising a hydrophilic polyalkylene oxide block which consists essentially of ethylene oxide groups, and a terminal, hydrophobic polyalkylene oxide block which consists of alkylene oxides with at least 4, preferably at least 5 carbon atoms.

Hydrophobically associating copolymers

A process for preparing polyether alcohols by reacting one or more unsaturated starters having at least one active hydrogen atom per molecule with one or more alkylene oxides in the liquid phase in the presence of a basic catalyst in a reactor, wherein the one or more alkylene oxides are introduced into the reactor in such a way that the concentration of unreacted alkylene oxide in the liquid reaction mixture in the reactor is increased as far as possible with increasing degree of addition of the alkylene oxide onto the starter, with the proviso that the temperature at the end of a runaway reaction is at any point in time at least 100 K below the onset temperature of the decomposition reaction of the liquid reaction mixture, is proposed.

Process for preparing allyl alcohol alkoxylates

A process for a continuous production of a polyetherol first involves reacting a catalyst () with an alcohol starter () or an alkoxylated precursor, to give a mixture comprising an alcoholate and water. Water is then removed from the mixture. The process further involves feeding the alcoholate into a bubble column and feeding an alkylene oxide into the bottom of a compartment of the bubble column, such that the alkylene oxide rises in the alcoholate. The alkylene oxide then reacts with the alcoholate or a secondary product from the reaction between the alcoholate and alkylene oxide, to give the polyetherol.

Process for a continuous production of polyetherols

A process for the preparation of polyether alcohols by reacting at least one alkylene oxide with at least one unsaturated starter having at least one active hydrogen atom per molecule under basic catalysis,

Process for the preparation of polyether alcohols from unsaturated starters having active hydrogen atoms

The invention relates to a process for preparing DMC catalysts by reaction of cyanometalate compounds with metal salts, wherein the reaction is carried out in ionic liquids as solvents or suspension media.

DMC catalysts, method for the production thereof and use thereof

A process for preparing polyether polyols by reaction of the following starting materials:

Method for producing polyether polyols

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

Method for producing polyether alcohols

The invention provides a process for continuously preparing polyether alcohols by adding alkylene oxides to H-functional starter substances using a DMC catalyst, comprising the steps of

The invention provides a process for continuously preparing polyether alcohols using DMC catalysts, which comprises, in a first step, in a continuous reactor, adding alkylene oxides onto H-functional starter substances and transferring the output of this reactor to a second step in a reactor which is divided by closed trays into mutually separate sections, known as compartments, which are connected to one another by external pipelines, in which the output of the reactor from the first step of the reaction passes through the compartments in succession.

The invention relates to starting compounds which can be used for the preparation of polyurethanes and can be prepared by reaction of hydroxyl-containing oligomers of formaldehyde.

Initial compounds for producing polyurethanes

The invention provides a process for preparing polyether alcohols by adding alkylene oxides onto H-functional starter substances using DMC catalysts, which comprises, in a first step, adding propylene oxide or a mixture of propylene oxide and ethylene oxide onto H-functional starter substances and, in a second step, transferring the product thus formed into a tubular reactor in which mixtures of ethylene oxide and propylene oxide are metered in at least two metering points, the proportions of ethylene oxide and propylene oxide in the mixtures metered in in the first and in the second step being different, the proportions of ethylene oxide and propylene oxide in the mixtures metered in at least two metering points in the second step being different, and the mixture metered in in the second step, at least at the last metering point, comprising at least 40% by weight of ethylene oxide.

Method for production of polyether alcohols

The invention relates to polyether alcohols, to a process for preparing polyether alcohols by reacting alkylene oxides in the presence of a double metal cyanide (DMC) catalyst with at least one saturated OH component which may, if appropriate, have previously been reacted with an alkylene oxide, wherein an antioxidant is added before or during the reaction, and also to the further processing of the polyether alcohols to form polyurethanes.

Polyether alcohols and method for the production of polyether alcohols for polyurethane synthesis

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Mannheim, Germany

Thomas Ostrowski