Basf Aktiengesellschaft

Basf Se Corporation

Styrolution Europe Gmbh

Wolfgang Loth

Konrad Knoll

Hermann Gausepohl

Wolfgang Fischer

Bolette Urtel

Klaus Hahn

Andreas Deckers

Faissal-Ali El-Toufaili

Achim Loeffler

Ralf Boehling

Karl-Heinz Wassmer

Michael Stoesser

Dieter Hannu Boeckh

Norbert Niessner

Peter Bassler

Christian Schade

Hubert Trauth

Philippe Desbois

Volker Warzelhan

Rolf-Hartmuth Fischer

Achim Stammer

Hartwig Voss

Thomas Wettling

Walter Heckmann

Aaron Flores-Figueroa

Peter Ittemann

Marco Krüger

Thomas Ostrowski

Rainer Dobrawa

Harald Lauke

Norbert Guntherberg

Jürgen Detering

Andreas Daiss

Sirus Zarbakhsh

Andreas Brodhagen

Siegmund Besecke

Paul Naegele

Bernhard Czauderna

Gad Kory

Hermann Tatzel

Bernd Rumpf

Markus Brym

Norbert Güntherberg

Wolfgang Mattmann

Rolf Henn

Hans-Dieter Schwaben

Christian Hubert Weidl

Uwe Blumenstein

Gerd Konrad

Elke Guetlich-Hauk

Elke Gütlich-Hauk

Alain Deffieux

Helmut Winterling

Stephan H&uuml;ffer

Phillip Hanefeld

Michel Fontanille

Jens Becker

Jens-Uwe Schierholz

Matthias Kleiner

Michaela Shaun Heussler

Ruth Wirschem

Reiner Thiele

Thilo Krebs

Jürgen Hofmann

Christian Schwede

Achim Gerstlauer

Bernd Diebold

Joachim Nilges

Axel Franke

Paulus Schmaus

Fatemeh Ahmadnian

Stefan L&auml;tsch

Erich Klement

Jurgen Pohrt

Hartmut Heinen

Marian Mours

Juergen Korkhaus

J&uuml;rgen Sturm

Andreas Daiβ

Rainer Bardon

Michael Sauer

Andreas Daisse

Axel Schimpf

Michaela HEUßLER

What is proposed is a process for preparing polyether alcohols by conversion of the following reactants: a) one or more alkylene oxides and optionally carbon dioxide and b) one or more H-functional starter substances, in the presence of a catalyst, to form a liquid reaction mixture, in a reaction unit (), which is characterized in that the reaction unit () has internals () which form a multitude of microstructured flow channels which bring about multiple splitting of the liquid reaction mixture into component flow paths and recombination thereof in altered arrangement, the multiple splitting and recombination being repeated several times and the microstructured flow channels having a characteristic dimension which is defined as the greatest possible distance of any particle in the liquid reaction mixture from the wall of a flow channel closest to the particle, in the range from 20 to 10 000 &#x3bc;m, the result being that the flow profile of the liquid reaction mixture approximates to ideal plug flow as a result of the microstructured flow channels.

Process for preparing polyether alcohols

The present invention relates to a method for the continuous production of a polymer by radical polymerization, wherein at least three materials are mixed with microstructures in one or more mixers and are then polymerized in at least one reaction zone.

Method and device for the continuous production of polymers by radical polymerization

The invention relates to a continuous process for the preparation of amphiphilic graft polymers, wherein a vinyl ester component (B) composed of vinyl acetate and/or vinyl propionate (B1) and, if desired, a further ethylenically unsaturated monomer (B2), is polymerized in the presence of a polyalkylene oxide (A), a free radical-forming initiator (C) and, if desired, an additive (D), at a mean polymerization temperature at which the initiator (C) has a decomposition half-time of from 1 to 500 min, in at least one tubular reactor segment with a feed side and an outlet side, through which the reaction mixture comprising at least a part of component (A) to (C), and if desired (D), streams, a tubular reactor segment and the use of the inventive amphiphilic graft polymer. The invention further relates to an inventive amphiphilic graft polymer and the use thereof.

Continuous process for the synthesis of graft polymers based on polyethers

A process for preparing aqueous solutions of homo- or copolymers of acrylic acid by means of free-radical polymerization of acrylic acid and optionally water-soluble, monoethylenically unsaturated comonomers in an aqueous medium in the presence of at least one water-soluble initiator and of at least one water-soluble regulator, wherein the polymerization is conducted by means of a continuous process, and wherein, after the polymerization, low molecular weight components are at least partly removed from the resulting aqueous polymer solution. For the polymerization, preference is given to using microstructured mixers and reactors. Preference is given to using at least one reactor and/or mixer with microstructures for the process.

Process for preparing aqueous polyacrylic acid solutions

The present invention relates to a process and to an apparatus for continuous living polymerization of cationically polymerizable monomers, in which at least three feedstocks are mixed in one or more mixers with microstructures and then polymerized in at least one reaction zone.

Process and apparatus for continuously polymerizing cationically polymerizable monomers

A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises

Continuous method for multi-staged drying and subsequent condensation of a polyamide granulate

The present invention relates to a method for reducing residual volatiles from polymer compositions.

Deodorization of polymer compositions

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

Method for producing polyether polyols

Continuous method for producing polyamides from aminonitriles

The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction&mdash;which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements&mdash;wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.

Method for coating apparatuses and parts of apparatuses used in chemical manufacturing

Anionic polymerization process

A molding material as based on from 60 to 98% by weight of a hard matrix A comprising polymerized or copolymerized units of at least one vinylaromatic monomer or at least one vinylaromatic monomer and at least one polar comonomer and from 2 to 40% by weight, the percentages in each case being based on the molding material comprising A and B, of a soft phase B formed from a hydrogenated or unhydrogenated block copolymer prepared by anionic polymerization and comprising a vinylaromatic monomer V and a diene D, having at least one random or quasi-random block (V/D) of vinylaromatic monomer and diene and containing from 10 to 80% by weight, based on the soft phase B, of occlusions of matrix material (a) formed during the polymerization of the hard matrix A in the presence of the block rubber, and said molding material is used for the production of films, sheets or moldings.

Impact-resistant molding compound made of styrene polymers

Abstract of the disclosure: A process is described for the continuous preparation of an impact-resistant molding material by anionic polymerization of styrene or another aromatic vinyl compound or mixtures thereof in the presence of a solvent and a block rubber, wherein the polymerization is carried out in at least 2 reaction vessels that together form a reactor cascade, the monomer stream being subdivided among the reaction vessels present, the living polymer chain ends being terminated in a conventional manner and the solvent being removed.

Preparation of impact-resistant polystyrene

In a process for preparing polystyrene by continuous anionic polymerization of styrene monomer by means of a catalyst based on a metal alkyl preferably in the presence of a solvent at a temperature in the range from 30 to 70.degree. C., the styrene monomer is fed to an essentially isothermally operated circulation reactor configured as a closed tube loop which has, for example, a specific cooling area of at least 50 m.sup.2 per m.sup.3 of reactor volume, with the circulation velocity of the reaction mixture and the residence time being set such that the monomer conversion reaches at least 50% and the polymerization is completed in an essentially backmixing-free tube reactor.

Preparation of polystyrene by continuous anionic polymerization

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Bad Duerkheim, Germany

Wolfgang Loth