Basf Aktiengesellschaft

Badische Anilin- & Soda-fabrik Aktiengesellschaft

Rolf Fikentscher

Alfred Oftring

Werner Streit

Johannes Perner

Knut Oppenlaender

Johannes P Dix

Richard Baur

Ekhard Winkler

Wolf-Dieter Balzer

Klaus Glaser

Heinrich Mertens

Wolfgang Reuther

Erwin Hahn

Michael Kroener

Norbert Greif

Herbert Helfert

Rudi Widder

Stefan Birnbach

Helmut Wolf

Hans-Heinrich Bechtolsheimer

Felix Richter

Guenther Gotsmann

Guenter Frey

Karl-Heinz Beyer

Alexander Kud

Hans-Juergen Degen

Ortwin Schaffer

Rolf Streicher

Werner Auhorn

Michele Vescia

Sigismund Heimann

Felix Miksovsky

Wolf Guender

Siegfried Schneider

Axel Sanner

Friedrich Linhart

Hans-Henning Vogel

Dietrich Lach

Klaus Barthold

Paul Diessel

Chung-Ji Tschang

Gerold Braun

Werner Bochnitschek

Emil Scharf

Wilfried Sager

Gerhard Welzel

Guenther Elfers

Karl Gans

Jozsef Gerendas

Herbert Fleischer

Rudolf Rokohl

Heinrich Hartmann

Klaus Ebel

Walter Denzinger

Toni Dockner

Wolfgang Trieselt

Christos Vamvakaris

Ulf Baus

Heinz Berbner

Karl Stork

Hans D Zettler

Manfred Herrmann

Wolfram Weiss

Juergen Weiser

Norbert Sendhoff

Hans J Wolf

Theo Proll

Reinhold Kohlhaupt

Horst Belde

Erhard Klahr

Ewald Daubach

Ralf Brueckmann

Hans-Ulrich Jaeger

Andreas Hohmann

Enrique Freudenberg

Erich Schwartz

Roland Schwen

Wilhelmus Slotman

Ulrich Goeckel

Toni Simenc

Guenter Meyer

Wolfgang Fath

Norbert Zimmermann

Heinz Voelker

Lutz End

Klaus Wulz

Heinz-Dieter Angstmann

Friedrich Reinert

Ulrich Kaluza

Reinhard Herzog

Juergen Lasowski

Ulrich Baumgarte

Gunter Eckert

Richard Mueller

Guenther Immel

Ingrid Steenken-Richter

Adolf Stuebinger

Heinz Bille

Joachim Kurze

Horst Diefenbach

Condensates of arenesulfonic acids and formaldehyde are prepared by sulfonating arenes obtainable by thermal cracking of a naphthenic residue oil and fractional distillation of the cracked products of the fraction obtained at 100-120.degree. C. under atmospheric pressure, sulfonating this aromatics fraction with oleum at 120.degree.-160.degree. C. using an amount of from 0.7 to 1.2 parts by weight of oleum having an SO.sub.3 content of 24% by weight per part by weight of aromatics fraction, and subsequently condensing the arenesulfonic acids with formaldehyde in a conventional manner, and are used as dispersants, in particular for preparing dye formulations.

Preparation of condensates of arenesulfonic acids and formaldehyde and

The present invention relates to the use of trialkanolamine polyethers obtained by condensation of one or more trialkanolamines in the presence of phosphorous acid and/or hypophosphorous acid as demulsifiers for oil-in-water emulsions.

Use of trialkanolamine polyethers as demulsifiers for oil-in-water

A condensation polymer, obtainable by condensation of a mixture containing, as chief components,

Modified melamine-formaldehyde resins

The present invention relates to methods of demulsifying employing condensates as demulsifiers for oil-in-water emulsions and prepared from

Methods of demulsifying employing condensates as demulsifiers for oil-in

Dyed leather is aftertreated with quaternized condensation products of

Quaternized condensation products for aftertreating dyed leather

Poly-N-vinylformamide which contains structural units of the formula ##STR1## and a terminal double bond of the formula ##STR2## is prepared by anionic polymerization of N-vinylformamide in the presence of bases.

Anionically polymerized N-vinylformamide and the preparation thereof

Stable water-in-oil emulsions of a hydrolyzed polymer of an N-vinylamide of the formula ##STR1## where R and R.sup.1 are each H or C.sub.1 -C.sub.6 -alkyl, are prepared by polymerizing a compound of the formula I, alone or as a mixture with other monoethylenically unsaturated monomers, in the form of a water-in-oil emulsion to give a water-in-oil polymer emulsion, and then hydrolyzing the polymer, hydrolysis of the polymer in the form of the water-in-oil polymer emulsion being carried out in the presence of an acid or base, and additives in the form of antioxidants, reducing agents or aldehyde acceptors being added for stabilization.

Preparation of stable water-in-oil emulsions of hydrolyzed polymers of

A process for preparing .alpha.-formylamino nitriles of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or unsubstituted or substituted, with substituents which are inert under the reaction conditions, aliphatic or heteroaliphatic radicals with 1 to 10, cycloaliphatic or heterocycloaliphatic radicals with 3 to 6, araliphatic radicals with 7 to 12, heteroaraliphatic radicals with 4 to 12, aromatic radicals with 6 to 10 or heteroaromatic radicals with 3 to 10 carbon atoms, by reacting cyanohydrins of the formula II ##STR2## with the formamide III ##STR3## in the presence of acids, entails adding at least one ammonium salt to the reaction mixture.

Preparation of alpha-formylamino nitriles

A process for preparing .alpha.-formylamino nitriles of the formula Ia ##STR1## and Ib ##STR2## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each is hydrogen or unsubstituted or substituted, with substituents which are inert under the reaction conditions, aliphatic or heteroaliphatic radicals with 1 to 10, cycloaliphatic or heterocycloaliphatic radicals with 3 to 6, araliphatic radicals with 7 to 12, heteroaraliphatic radicals with 4 to 12, aromatic radicals with 6 to 10 or heteroarometic radicals with 3 to 10 carbon atoms, with the priviso that at least one of R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 is hydrogen, comprises reacting an iminodiacetonitrile of the formula II ##STR3## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the abovementioned meanings, with formamide of the formula III ##STR4## in the presence of formic acid or with a compound which provides formic acid, in the presence of acids.

A sample of a fuel/oil/additive mixture is metered continuously to a channel-like, inclined test element along which there is an increasing temperature profile. Under the increasing action of heat on the flowing mixture, solid residual products form on the test element after a certain flow distance. Their weight and the flow distance are evaluated in order to evaluate the additive.

Apparatus for testing fuel additives and oil additives

Glycerol aminocarboxylates of the formula ##STR1## where n is from 0 to 10 and

Glycerol aminocarboxylates and preparation and use thereof

Serine-N,N-diacetic acid and derivatives thereof are prepared in various ways and used in particular as complexing agents, bleaching agent stabilizers and builders in detergents.

Serine-N,N-diacetic acid and derivatives as complexing agents and

Addition salts of cysteamine with acids are prepared by reacting aziridine with an organic sulfur compound of oxidation state -2 and with a ketone and then subjecting the thiazolidine formed as an intermediate to acid hydrolysis, by a process in which aziridine and the ketone are reacted with ammonium hydrogen sulfide or with a metal hydrogen sulfide with the addition of a moderately strong or strong acid at from -10.degree. to +100.degree. C. and a pH which is greater than or equal to 8.5 is maintained.

Preparation of addition salts of cysteamine with acids

Quaternized condensation products useful as aftertreating agents for fixing reactive dyeings and prints on textile materials which contain cellulose fibers are formed from

Quaternized condensation products of trialkanolamines

Polymeric, unquaternized or quaternized condensates which contain piperazine rings bonded via chain members are used as conditioners for the pretreatment of nonmetallic surfaces of moldings before their activation for subsequent chemical metallization. This procedure gives particularly uniform and well adhering metal coatings.

Polymeric conditioner for pretreating nonmetallic surfaces for chemical

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Ludwigshafen, Germany

Rolf Fikentscher