Basf Se Corporation

Basf Aktiengesellschaft

Ineos Styrolution Group Gmbh

Kolon Plastics, Inc.

Basfaktiengesellschaft

Achim Stammer

Gad Kory

Detlef Kratz

Joachim Clauss

Gerd Kaibel

Faissal-Ali El-Toufaili

Gerhard Schulz

Martin Fischer

Matthias Dernbach

Manfred Stroezel

Axel Wilms

Markus Siegert

Wolfgang Fischer

Norbert Niessner

Wolfgang Harder

Joaquim Henrique Teles

Jochem Henkelmann

Martin Weber

Arnold Schneller

Neven Lang

Eckhard Stroefer

Bernd Hisgen

Thomas Heitz

Klaus-Dieter Hungenberg

Eckhard Ströfer

Peter Bassler

Norbert Rieber

Philippe Desbois

Tom Witzel

Klemens Massonne

Guido Voit

Karsten Eller

Georg Heinrich Grosch

Dietrich Scherzer

Klemens Flick

Michael Schulz

Harald Rust

Marco Krüger

Walter Dobler

Hans Hasse

Michael Koch

Dirk Simon

Wolfgang Loth

Ulrich M&uuml;ller

Arnd B&ouml;ttcher

Ralf Schulz

Dennis Lösch

Heinrich Sack

Mathias Haake

Juergen Ahlers

Andreas Wollny

Karl-Heinz Wassmer

Simon Gramlich

Angela Ulzhöfer

Ning Zhu

Stefan Quaiser

Volker Rauschenberger

Stefan Schwiegk

Christian Schmidt

Frank Niedermaier

Rüdiger Häffner

Rolf-Egbert Grützner

Florian Richter

Brian J Banaszak

Roland Walker

Thorsten Friese

Andreas Bauder

Silke Biedasek

SangJun Ahn

Jens Becker

JongMoon Kim

Knut Zollner

Jin-Sang Choi

Johannes Heinemann

Ula El-Jaby

Carsten Oost

Jens Assmann

Martin Sohn

Andreas Walch

Jürgen Demeter

Anne Wenzel

Freddy Gruber

Marvin Kramp

Gerhard Lange

Achim Gerstlauer

In-Gi Cho

Uwe Witt

Shankara Narayanan Keelapandal Ramamoorthy

Jürgen Deininger

Jörg Erbes

Isa Alexandra Queiroz Da Fonseca

Sergej Blagov

Thomas Grützner

Elmar Stockelmann

Angela Ulzhoefer

Gert Treiber

Claudius Schwittay

Michael Ott

Michael Freese

Rainer Ostermann

A process for producing particles of a thermoplastic polymer in spherical form involves providing at least one thermoplastic polymer in a molten state and providing an aqueous solution of at least one surface-active substance. The aqueous solution is in a temperature range from 100 to 300° C. The process also involves dispersing the thermoplastic polymer in the aqueous solution to obtain an aqueous solution containing dispersed thermoplastic polymer, which is cooled down to a temperature below the solidification point of the thermoplastic polymer to obtain a suspension containing an aqueous solution and particles of the thermoplastic polymer suspended in a solid state and in spherical form. The particles can be separated from the suspension and, optionally, dried. The particles obtained from the process have a particle size distribution having a d[4,3] value of more than 10 μm and a dvalue of more than 20 μm.

Method for producing spherical thermoplastic polymer particles

A process for making an oxymethylene polymer comprising polymerizing at least one compound capable of forming &#x2014;CHO&#x2014; repeat units (monomer) in the presence of at least one ester of the general formula I (ester): R&#x2014;CO&#x2014;O&#x2014;R(I) wherein Rcan be hydrogen, wherein Rand Rare independently of each other linear or branched Cto Calkyl Cto Ccycloalkyl &#x2014;[R-0-]Rwherein Ris a linear or branched Cto Calkylen and Ris a linear of branched Cto Calkyl and n is an integer of from 1 to 5. and in the presence of at least one Lewis acid.

Process for making an oxymethylene polymer

The present invention relates to a process for continuously producing a polyamide powder (PP) comprising at least one semicrystalline polyamide (P). The present invention further relates to the polyamide powder (PP) thus obtainable and to the use of the polyamide powder (PP) as sinter powder (SP), and also to a process for producing a shaped body by exposing a layer of a polyamide powder (PP).

Method for continuously producing a polyamide powder

The present invention relates to a process for energy recovery in a process for the preparation of 1,3,5-trioxane.

Energy recovery in a method for preparing 1,3,5-trioxane

The present invention relates to a process for preparing a polyaryl ether by reacting components (a1) and (a2) in the presence of a carbonate compound (C) to obtain a salt-containing polymer (SP) comprising the polyaryl ether and a salt (S). After the reaction, the salt (S) is extracted from the salt-containing polymer (SP) to obtain a desalinated polymer (DP) comprising the polyaryl ether.

Desalination of polyaryl ethers by means of melt extraction

The invention relates to a process for the production of thermoplastic moulding compounds, in particular for the production of acrylonitrile-butadiene-styrene (ABS), wherein at least a first reagent () and a second reagent () of the thermoplastic moulding compounds are fed to a loop conduit () which comprises a static mixer (), wherein the reagents () are pressed in loops through the loop conduit () and passing the static mixer (), whereby the reagents () are dispersed to form a dispersion () in the static mixer (). The invention also relates to a thermoplastic moulding compound that is produced by the inventive process.

Process for the production of thermoplastic moulding compounds

The invention relates to a process for continuously preparing polyamide oligomers. This comprises continuous conveying of an aqueous solution of polyamide-forming monomers from a reservoir vessel into an oligomerization reactor, heating of the aqueous solution beyond a dissolution or storage temperature, the residence time of the monomer solution in the oligomerization reactor being limited and the pressure or the partial vapor pressure of the water being adjusted such that a conversion of monomers to polyamide oligomers does not exceed a maximum value and/or the polyamide oligomers formed do not phase-separate or spontaneously crystallize in solid form, and continuous discharge of the polyamide oligomers from the oligomerization reactor. A polyamide oligomer preparable by this process can be provided continuously in a mixture with water in a process for preparing a semicrystalline or amorphous, thermoplastically processible polyamide and then postcondensed to give a polyamide. This polyamide can be used for production of moldings by means of injection molding, multicomponent injection molding, injection molding/welding, extrusion, coextrusion, blow molding or thermoforming.

Method for continuously producing polyamide oligomers and producing semicrystalline or amorphous polyamides that can be thermoplastically processed

The invention relates to a process for the production of thermoplastic moulding compounds, in particular ABS, wherein at least a first reagent () and a second reagent () of the thermoplastic moulding compounds are fed to a gear pump () which comprises a housing and at least a first gear wheel that is rotatable relative to the housing about a first axis, and a second gear wheel that is rotatable relative to the housing about a second axis, wherein a loop conduit () is provided, and wherein the reagents () are pressed in a loop through the loop conduit () and passing the gear wheels, whereby the reagents () are dispersed to form a dispersion () in the gear pump (). The invention also relates to a thermoplastic moulding compound that is produced by the inventive process.

The present invention relates to a process for the preparation of an aliphatic or partially aromatic polyamide, in which an aqueous composition of the monomers is subjected to an oligomerization at elevated temperature and increased pressure, the reaction mixture is optionally subjected to a first decompression to reduce the water content, the (optionally decompressed) reaction mixture is heated within a short time to a temperature above the melting temperature of the polyamides and the heated reaction mixture is subjected to a (further) decompression to reduce the water content and to an after-polymerization.

Process for the continuous preparation of an aliphatic or partially aromatic polyamide

A method for desalinating a salt-containing polymer (SP) comprising a polyaryl ether having a softening temperature Tand a salt (S), comprising the steps of

The invention relates to a device for synthesis of a polymer under separation of a gaseous substance. Said device comprises a reaction chamber (), which has a top section (), a middle section () and a bottom section (), an inlet opening () which is arranged in the middle section (), a first outlet opening () which is arranged in the bottom section (), a second outlet opening () which is arranged in the top section (), a first return opening (), which is arranged in the bottom section (), a second outlet opening (), which is arranged under the top section (), a distribution device (), which is arranged between the top section () and the middle section (), and a removal device () which is arranged to be movable along the top section (). The invention further relates to a method for synthesis of a polymer which can be carried out in said device.

Device and method for synthesis of a polymer under separation of a gaseous substance

The invention relates to a device for synthesizing a polymer accompanied by separating a gaseous substance. Said device comprises: a reactor chamber () having a substantially circular cylinder-shaped upper section (), which is delimited by two circular surfaces () and a circumferential surface () and has a longitudinal cylinder axis, and a lower section (), the upper section () and the lower section () being connected to one another via the first circular surface (); an inlet opening (); a first outlet opening (), which is arranged in a wall of the lower section (); a second outlet opening (), which is arranged in the second circular surface () or in the circumferential surface () between the inlet opening () and the second circular surface (); and a removal device (), which is arranged so as to be movable along the longitudinal cylinder axis at least between the second circular surface () and the inlet opening (), and contacts the circumferential surface (). The invention further relates to a method comprising: feeding an oligomer melt () into a circular cylinder-shaped first section () of a reaction chamber () through an inlet opening () tangentially to a circumferential surface () of the first section (); polymerizing the oligomer melt () to form a polymer melt (); removing the polymer melt () from the reaction chamber () through a first outlet opening () of the reaction chamber (); and removing a gaseous substance () from the reaction chamber () through a second outlet opening () of the reaction chamber () above the inlet opening (). Deposits on at least one inner wall of the first section () of the reaction chamber () above the inlet opening () are removed by a removal device ().

Device for synthesizing a polymer with reduced formation of deposits in the reaction chamber

The invention relates to a method for synthesizing a polyamide, in which method an aqueous solution is sprayed onto the polyamide before and/or during a solid-state post-condensation process. The aqueous solution comprises at least a first compound, selected from the group comprising phosphoric acid, fully neutralized salts of phosphoric acid, partially neutralized salts of phosphoric acid, and mixtures thereof, and a second compound, selected from the group comprising an acid, an anhydride, a lactone, ammonia, an amine, and mixtures thereof, with the stipulation that the second compound is not phosphoric acid and is not phosphoric acid anhydride. The spraying occurs at a temperature that lies below the boiling point of water. A polyamide that can be produced by means of the method according to the invention can be used in particular to produce films, monofilaments, fibers, threads, or textile sheet materials.

Method for producing highly viscous polyamides

The present invention relates to a process for preparing an aliphatic or semiaromatic polyamide, in which a polyamide prepolymer is subjected to a solid state polymerization.

Method for producing aliphatic or partially aromatic polyamides, said method comprising a solid-phase polymerization process

An apparatus for synthesis of a polymer with separation of a gaseous substance comprises a reaction space having an essentially circular cylindrical upper section which is bounded by two circular faces and one shell face and has a longitudinal cylinder axis, and a lower section, an inlet orifice disposed in a circular face or the shell face of the upper section, a first outlet orifice disposed in a wall of the lower section, a second outlet orifice disposed in the shell face of the upper section opposite the first outlet orifice, and a removal device which is disposed so as to be rotatable about the longitudinal cylinder axis and is in contact with both circular faces and the shell face. This apparatus can especially be used for performance of a process including the feeding of an oligomer melt into a reaction space through an inlet orifice, the polymerization of the oligomer melt to give a polymer melt, the removal of the polymer melt from the reaction space through a first outlet orifice of the reaction space, and the removal of a gaseous substance from the reaction space through a second outlet orifice of the reaction space, wherein deposits on at least one inner wall of the reaction space are removed by a removal device and transported into the oligomer melt.

Device for the synthesis of a polymer with extraction of a gaseous substance comprising a reaction chamber having at least one circular-cylindrical section

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Freinsheim, Germany

Achim Stammer