Basf Aktiengesellschaft

Bernd Leutner

Holger Friedrich

Hans-Ulrich Schlimper

Hans-Michael Schneider

Dieter Schlafer

Reinhold Schlegel

Wolfgang Steiner

Siegfried Schreiner

Klaus-Dieter Hoppe

Rudi Kroner

Rolf Wurmb

Martin Jochen Klatt

Otto Watzenberger

Herbert Fisch

Erfried Voelkl

Wolfgang Kochanek

Michael Nam

Kurt Hecky

Gabriele Friedrich

Hans-Josef Sterzel

Johannes Perner

Motonori Yamamoto

Werner Ostertag

Harald Keller

Gerd Wunsch

Brigitte Gareiss

Thomas Heitz

Paul Diessel

Joachim Pfeffinger

Rainer Theysohn

Joachim Simon

Eduard Schoenafinger

Wolfgang Seydl

Hans Henning Schneehage

Michael Kneip

Volker Kiener

Ludwig Kreitner

Eckhard Hetzel

Ernst-Juergen Schier

Uwe Wegmann

Winfried Dethlefsen

Heinrich Spahn

Dieter Schlaefer

Lothar Diehl

Siegmar Lukas

Hans H Reich

Berthold Mueller

Albrecht Wilhelm Friederang

Frank Hanus

Gotthard Scizi

Klaus Blanck

Anton Jungbauer

Dieter Roth

Paul Bever

Geerd F Juergens

Eberhard Rother

Matthias Kraume

Bernhard Purucker

Dieter Wagner

Wilhelm Volkenborn

Method for producing highly pure lithium salts

Flame-proof moulding compounds

Flame-retardant polyester molding compositions containing flame retardant nitrogen compounds and diphosphinates

A process for breaking down hydroxylamine in aqueous solutions, especially wastewaters, by treatment with an oxidizing agent, which comprises using as said oxidizing agent an alkali metal hypohalite or alkaline earth metal hypohalite or peroxomonosulfuric or peroxodisulfuric acid or a salt thereof and carrying out the treatment with said oxidizing agent at a pH<8.

Breaking down hydroxylamine in aqueous solutions

Phosphorus-containing iron powder is prepared by mixing carbonyl iron powder or whiskers with elemental phosphorus, heating the mixture and comminuting the product obtained to give a powder. The powder of the present invention has a particularly low content of extraneous elements.

Phosphorus-containing iron powders

Use of carboxyamide-polysiloxanes for water proofing leather

Finely divided phosphorus-containing iron is prepared by reacting iron pentacarbonyl with a volatile phosphorus compound, in particular PH.sub.3, in the gas phase. The resulting phosphorus-containing iron powders and iron whiskers have a particularly low content of extraneous elements.

Finely divided phosphorus-containing iron

The invention relates to a method for preparing silicon-containing iron powders by thermal decomposition of a gas mixture comprising iron pentacarbonyl and, as a volatile silicon compound, a silane or a halogen-free organosilane in which the gas mixture flows through a heated reaction chamber and heating of the gas mixture is effected by thermal conduction. The silicon-containing iron powders obtained are distinguished by a particularly low impurity element content. The silicon-containing iron powders can be used for the fabrication of cores, magnets and radar-absorbing materials.

Silicon-containing iron powders

The flow resistance of a diaphragm based on a fiber material is modified by treating the diaphragm during or after preparation thereof with a dispersion comprising a fluorine-containing component and optionally with a solution comprising a precursor of ZrO.sub.2.

Modification of the flow resistance of diaphragms

The invention relates to a process for recycling diaphragms, in particular a process for recycling used asbestos-free diaphragms from alkali metal chloride electrolysis, the diaphragm material being comminuted, the diaphragm material being washed with a wash substrate and a reusable material being obtained.

Recycling of diaphragms

Silanes of the general formula I ##STR1## wherein n is an integer of from 1 to 5, at least one of the residues R represents a hydrolyzable residue selected from the group of substituents consisting of halogen, alkoxy, sec. amino and oxycarbonyl hydrogen or oxycarbonyl alkyl, and the other residues represent alkyl, cycloalkyl, aryl or one of the said hydrolyzable residues, a process for their preparation, and their use.

Silanes comprising branched alkyl chains

An aqueous solution of free hydroxylamine is prepared by a process in which the solution obtained by treating a hydroxylammonium salt with a base is separated into an aqueous hydroxylamine solution and a salt fraction by treatment with water or steam at .ltoreq.80.degree.0 C. The novel process can be carried out in a simple and gentle manner and on a large industrial scale. Owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process, the risk of decomposition is minimized.

Process for production of aqueous solutions of free hydroxylamine

The present invention relates to stabilized hydroxylamine solutions comprising as stabilizer at least one compound of the formula I

Stabilized hyroxylamine solutions

A process for the regeneration of plastic diaphragms is described, in which a mineral acid solution is mixed with a suitable corrosion inhibitor, this mixture is temperature controlled at from approximately 0.degree. to 100.degree. C., preferably 40.degree. to 80.degree. C., in particular 50.degree. to 70.degree. C., and passed through the diaphragm for from approximately 0.1 to 84 hours, preferably 1 to 72 hours, in particular 2 to 24 hours.

Regeneration of plastic diaphragm

Growing community of inventors

Frankenthal, Germany

Bernd Leutner