Bayer Aktiengesellschaft

Karl-Rudolf Gassen

Bernd Baasner

Albrecht Marhold

Dietmar Bielefeldt

Robert R Schmidt

Hans-Joachim Santel

Klaus Lurssen

Kurt Findeisen

Klaus Konig

Joachim Kluth

Klaus-Helmut Muller

Markus Lindig

Karlheinrich Meisel

Wilhelm Brandes

Stefan Dutzmann

Wilhelm Stendel

Bernhard Homeyer

Norbert Lui

Graham Holmwood

Bernd-Wieland Kruger

Benedikt Becker

Udo Kraatz

Heinz Forster

Hans-Joachim Diehr

Hans-Helmut Schwarz

Ernst Kysela

Michael Negele

Ulrich Feldhues

Klaus Walz

Walter Lange

Heinz Ziemann

Axel Ingendoh

Hans Schulze

Uwe Vogt

Rolf Brockmann

Fritz Puchner

Thomas Roick

Holger L&uuml;tjens

Peter P Wenzl

Gerd-Friedrich Renner

Horst Zwick

Hans-Detlef Matthaei

Klaus Rall

Joachim K&ouml;nig

J&uuml;rgen Reiners

Reiner Ditzer

Carsten Gerdes

Lothar Klein

Reacting weakly basic anion exchangers bearing tertiary amino groups with ethylene oxide under pH control and addition of acid leads to superior strongly basic anion exchangers.

Process for the preparation of strongly basic anion exchangers using ethylene oxide

Stilbene brightener

The invention relates to a novel process for the preparation of polycondensate solutions based on polyamidoamine/epichlorohydrin resins that gives products having a very low content of organic chlorine compounds, in particular a 1,3-dichlorophenol-2-propanol content of <0.1%, in combination with high activity and good shelf-life.

Wet-strength agent with low DCP content

.beta.-Hydroxyalkylpicolinium salts of the formula (I) ##STR1## wherein A, R.sup.1 to R.sup.3 and X have the meanings given in the description, which are obtained by reaction of picolines of the formula (II) ##STR2## with alkylene oxides of the formula (III) in the presence of a 1- to 3-basic acid and in water or an organic solvent as the reaction medium and are used as intermediate products for the preparation of cationic dyestuffs, and dyestuff preparations comprising such cationic dyestuffs.

Process for the preparation of beta-hydroxyalkypicolinium salts

A process for preparing perfluoroalkoxy(alkylthio)benzenes from perfluorochloroalkoxy(alkylthio)-benzenes by reaction with hydrogen fluoride in the gas phase and in the presence of a catalyst.

Process for preparing perfluoroalkoxy (alkylthio) benzenes

2,2-Difluorocyclopropyl derivatives of the formula ##STR1## in which R represents alkyl, optionally substituted aryl or optionally substituted aralkyl and

2,2-difluorocyclopropyl derivatives

Herbicidal substituted 4-amino-5-alkylthio-1,2,4-triazol-3-ones of the formula ##STR1## in which R.sup.1 represents in each case straight-chain or branched alkyl, alkenyl or alkinyl, each of which has up to 4 carbon atoms, and

Herbicidal substituted 4-amino-5-alkylthio-1,2,4-triazol-3-ones

Hexafluoropropanes of the formula CF.sub.3 -CHX-CF.sub.3 where X is hydrogen or chlorine are prepared by reacting hexachloropropene with hydrogen fluoride in the gas phase in the presence of a catalyst.

Process for the preparation of 1,1,1,3,3,3-hexafluoropropane and

Herbicidal cycloalkyl-substituted thiadiazolyloxyacetamides of the formula ##STR1## in which R.sup.1 represents hydrogen, or represents an optionally substituted radical selected from the group consisting of alkyl, alkenyl, alkynyl and aralkyl,

Herbicidal cycloalkyl-substituted thiadiazolyloxyacetamides

Novel intermediates for fungicides, comprising fluorocyclopropyl derivatives of the formula ##STR1## in which R represents alkyl, optionally substituted aryl or optionally substituted aralkyl,

Fluorocyclopropyl derivative fungicide intermediates

.alpha.-Fluoroacryloyl derivatives are prepared by reacting a dihalogenopropene with an anhydrous mixture of nitric acid and hydrofluoric acid to give a 1-nitro-2,2-fluorohalogeno-3-halogenopropane, converting this in the presence of a strong acid and a little water at elevated temperature to a 2,2-fluorohalogeno-3-halogenopropanoic acid, converting this into an ester or an amide and finally treating this with a dehalogenating agent.

Process for the preparation of .alpha.-fluoroacryloyl derivatives

A process for the preparation of partially fluorinated alcohols starting from halogen-containing alkenes, and 2,2,3,3,4,4-hexafluorocyclopentanol as a new partially fluorinated alcohol.

Process for the preparation of partially fluorinated alcohols

Growing community of inventors

Odenthal, Germany

Karl-Rudolf Gassen