Ciba Specialty Chemicals Corporation

Ciba-geigy Corporation

Basf Aktiengesellschaft

Basf Se Corporation

Andreas Kramer

Peter Nesvadba

Wolfgang Siegel

Marie-Odile Zink

Adalbert Braig

Frank Funke

Markus Frey

Rudolf Pfaendner

Arthur H&ouml;hn

Jochen Fink

Jean-Pierre Wolf

Friedrich Stockinger

Johann-Peter Melder

Kurt Hoffmann

Francesco Fuso

Hartmut Riechers

Tobias Hintermann

Arthur Hohn

Andreas Mühlebach

Thomas Kainmuller

Wiebke Wunderlich

Shelue Liang

Joachim Simon

Manfred Winter

Christoph Nubling

Hagen Weigl

Rudolf Brunner

Roland Darms

Alfred Steinmann

Dario Lazzari

Michael Henningsen

Arnd B&ouml;ttcher

Werner Stauffer

Andreas Weiper-Idelmann

Martin Sch&auml;fer

Rainer St&uuml;rmer

Lucienne Bugnon

Gerd Kaibel

Michael Roth

Heinz Wolleb

Alfred Renner

Sameer H Eldin

Georg Heinrich Grosch

Stephan Hueffer

Kazuhiko Kunimoto

Hans-Joachim Haehnle

Frank Dietsche

Maximilian Vicari

Abdul-Cader Zahir

Wolfgang Reif

Gerhard Schulz

Erhard Henkes

Regina Benfer

Mathias Haake

Matthias Kiefer

Andreas M&uuml;hlebach

Martin Rudloff

Luise Spiske

Markus Frede

Heinz R&uuml;tter

J&ouml;rg Therre

Jan Nouwen

Joachim Wulff-D&ouml;ring

Christian Knoll

Reinhard Kaczmarek

Hans-J&uuml;rgen Weyer

Stéphane Biry

Jochen Schröder

Ronald Drews

Christian Vonlanthen

William P Armstrong

Rene Huwyler

Hans-Georg G&ouml;bbel

Philipp Buskens

Wiebke Wunderlich-Wippert

Fran&ccedil;ois Rime

Volker Steuer

Karl-Heinz Schehlmann

Rolf Golombek

Gunther Huber

Francis Perritaz

J&uuml;rgen Schossig

Michael Schulik

G&uuml;nter Riewe

In a method of preparing polyalkyleneimines from alkyleneimines in the presence of a liquid solvent, and a catalyst, the preparing is effected semi-discontinuously in one reaction container. The preparing is optionally effected in the presence of further additives. Polyalkyleneimines obtained by such methods and formulations thereof likewise form part of the subject matter of the invention, especially those having a low proportion of chloride-containing compounds. Such polyalkyleneimines have uses in the field of medical technology, printing media, wastewater treatment, surface treatment, cosmetics, laundry detergents, biotechnology, packaging, electronics, paper, building construction chemistry, textiles, chromatography, ion exchangers, oil industry, ceramics, glass, membrane technology, catalysts, electroplating, biocides or wood protection. Further possible uses include as corrosion inhibitor, dispersant, additive in oils, for formulation of drugs, haircare products, scents and aromas, for preparing gene vectors, for functionalizing and modifying surfaces in electroplating and medical technology or for preparing cleaning systems for the semiconductor industry and lithium batteries.

Preparing chloride-free polyethyleneimines

Process for the preparation of N-vinylcarboxamides by pyrolysis of a compound of the formulaCH&#x2014;CH(CN)&#x2014;N(R)&#x2014;CO&#x2014;R&#x2003;&#x2003;(I),

Process for the preparation of N-vinylcarboxamides

A process for the hydrolysis of polymers comprising vinylcarboxamide units by heating polymers comprising vinylcarboxamide units in an aqueous medium in the presence of acids or bases, wherein an aqueous solution or dispersion of a polymer comprising vinylcarboxamide units and an aqueous solution or a base or acid are fed continuously to a tubular reactor at elevated pressure, from 0.05 to less than one equivalent of a base or acid being used per vinylcarboxamide equivalent and the mixture being passed through the tubular reactor at a temperature of &#x3e;100&#xb0; C. to 250&#xb0; C., depressurized and cooled.

Process for hydrolyzing polymers containing vinylcarboxamide units

A process for removing carbonaceous deposits on surfaces of catalysts and plant parts by treating the deposits with a superheated stream of steam admixed at least temporarily with an oxygenous gas is provided, which involves, in each case monitoring the offgas COcontent after condensation of the steam, at a temperature of at least 300&#xb0; C.: (a) treating the carbonaceous deposits with superheated steam at a temperature of at least 300&#xb0; C. until the COcontent of the offgas has exceeded a maximum; (b) then, with further supply of superheated steam, commencing oxygen supply, the amount of oxygen supplied being adjusted such that the COcontent in the offgas decreases further until it has fallen to a value of &#x3c;1% by volume; and then (c) ending the supply of superheated steam and passing an oxygenous gas over remaining amounts of carbonaceous deposits until the deposits have been virtually removed.

Process for removing carbonaceous deposits on surfaces of catalysts and plant parts

Cationic 2,2,6,6-tetraalkylpiperidinyl alkoxyamines of, for example, formula (1a) and (1b) are useful as polymerization initiators/regulators in a controlled stable free radical polymerization process to produce intercalated and/or exfoliated nanoparticles from natural or synthetic clays. Compositions comprising improved nanocomposites produced by this process are useful as, for example, coatings, sealants, caulks, adhesives and plastic additives wherein

Cationic substituted 2,2,6,6-tetraalkylpiperidinyl alkoxyamines

The present invention relates to selected glycidyl or carbonyl functional N-alkoxy-4,4-dioxy-polyalkyl-piperidine compounds forming an open chain or cyclic ketal structure, a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) a glycidyl or carbonyl functional N-alkoxy-4,4-dioxy-polyalkyl-piperidine nitroxide initiator compound. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers and the use of glycidyl or carbonyl functional N-alkoxy-4,4-dioxy-polyalkyl-piperidine nitroxide initiators for radical polymerization.

N-alkoxy-4, 4-dioxy-polyalkyl-piperidines as radical polymerization initiators

The instant invention relates to novel alkoxyamine initiators/regulators containing an ethylenically unsaturated, radically polymerizable group. The compounds are useful for the preparation of complex polymeric architectures. Further aspects of the invention are a polymerizable composition and a polymerization process comprising the alkoxyamine initiators/regulators, a macroinitiator obtainable by said polymerization process and a process for polymerizing with the macroinitiator.

Alkoxyamines containing a radically polymerizable group

The instant invention relates to cationic alkoxyamines, which are useful as polymerization initiators/regulators in a controlled stable free radical polymerization process to produce intercalated and/or exfoliated nanoparticles from natural or synthetic clays. The invention also relates to improved nanocomposites produced by this process and to the use of these nanocomposite compositions as, for example, coatings, sealants, caulks, adhesives and as plastic additives.

Cationic alkoxyamines and their use in producing nano particles from natural or synthetic clays

The present invention relates to 1-alkoxy-polyalkyl-peridine derivatives containing a structural element of formula (I)   Further subjects of the invention are a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) a 1-alkoxy-polyalkyl-piperidine derivative, a process for polymerizing ethylenically unsaturated monomers, and the use of 1-alkoxy-polyalkyl-piperidine derivatives for controlled polymerization. The intermediate N-oxyl derivatives, a composition of the N-oxyl derivatives with ethylenically unsaturated monomers and a free radical initiator X&#x2022;, as well as a process for polymerization are also subjects of the present invention.

1-alkoxy-polyalkyl-piperidine derivatives and their use as polymerization regulators

The instant invention relates to a process for the preparation of hydroxy-vinyl-aromatic polymers in particular 4-hydroxystyrene polymers or copolymers by anionic or controlled radical polymerization of the respective monomer, wherein the hydroxy functionality is blocked with a protective group which is subsequently removed by reacting it with a halosilane reagent. The resulting (co)polymers have a narrow polydispersity and are useful for manufacturing photoresists.

Process for the preparation of hydroxy-vinyl-aromatic polymers or copolymers by anionic or controlled radical polymerization

The present invention relates to open chain alkoxyamine compounds, a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) at least one open chain alkoxyamine compound. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, and the use of open chain alkoxyamine compounds for controlled polymerization. The intermediate N-oxyl derivatives, a composition of the N-oxyl derivatives with ethylenically unsaturated monomers and a free radical initiator X, as well as a process and their use for polymerization are also subjects of the present invention.

Open-chain alkoxyamines and their corresponding nitroxides for controlled low temperature radical polymerization

The present invention provides a process for preparing propargyl alcohol by converting an aqueous formaldehyde solution comprising acetylene over a catalyst comprising copper acetylide at an operating pressure of from 1 to 15 bar and from 70 to 120&#xb0; C. without forming a continuous gas phase, in which the aqueous formaldehyde solution comprises an organic solvent for acetylene and the catalyst is arranged in a fluidized bed.

Method for the production of propargyl alcohol

The instant invention relates to a composition of a thermoplastic polymer and a triblock-copolymer or grafted comb copolymer, with enhanced melt flow during processing. Further aspects of the invention are the triblock-copolymers or grafted comb polymers itself, a method for their production and their use as compatibilizers and meltflow enhancing additives. Yet another aspect of the invention are functional alkoxyamines, which are useful for the preparation of the triblock-copolymers or grafted comb polymers.

Thermoplastic compositions with enhanced melt flow and compatibility

N-alkoxy-4,4-dioxy-polyalkyl-piperidines as radical polymerization inhibitors

The present invention relates to selected 4-imino-N-alkoxy-polyalkyl-peperidine compounds preparation, a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b) a 4-imino-N-alkoxy-polyalkyl-piperidine compound. Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, and the use of 4-imino-N-alkoxy-polyalkyl-piperidine compounds for controlled polymerization. The intermediate N-oxyl derivatives, a composition of the N-oxyl derivatives with ethylenically unsaturated monomers and a free radical initiator, as well as a process for polymerization are also subjects of the present invention 

4-imino-n-alkoxy or oxy-polyalkyl-piperidine compounds and their use as polymerization regulators

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Meyriez, Switzerland

Andreas Kramer