Bayer Aktiengesellschaft

Lanxess Deutschland Gmbh

Bk Giulini Chemie Gmbh Co Ohg

Bk Giulini Chemie Gmbh

Bk Giulini Chemie Gmbh & Co.

Bk Giulini Gmbh

Thomas Klein

Thomas Staffel

Lysander Fischer

Thomas Menzel

Winfried Joentgen

Torsten Groth

Alfred Mitschker

Richard Walter

Wolfgang Wirth

Torsten Ziser

Hermann Sicius

Wolfgang Wambach

Peter Patzelt

Jürgen Straub

Ralf-Johann Moritz

Holger Schmidt

Sandra Horstmann

Thomas Sildatke

J&uuml;rgen Straub

Harry-Günter Müller

Fred Ebert

Joachim Voss

Thomas Klausa

Thomas Rossrucker

Svenja Kusterer

The present invention provides a novel process for producing rubber-modified bitumen using vulcanized rubber.

Method for producing rubber-modified bitumen using vulcanized rubber

The invention relates to a process for the preparation of iminodisuccinic acid ammonium metal salts, characterized in that, in a first stage, maleic anhydride (MA), alkali metal hydroxide and water are mixed in the molar ratio of 2:0&#x2013;3:5&#x2013;30 and then ammonia is metered in in the ratio MA: ammonia 2:1.5&#x2013;8, in order to obtain iminodisuccinic acid ammonium salts which, in a second stage, are reacted with metal oxides, metal hydroxides (and) or other metal salts or their mixtures to give iminodisuccinic acid ammonium metal salts of the formula 8,IDA(NH)(Na)(K)(Me).(NH)Formula 8in which

Preparation and use of iminodisuccinic acid ammonium metal salts

The invention relates to a novel conditioning agent based on polysuccinimide, its hydrolysates or its partial hydrolysates, for preventing deposits in standing or flowing water systems.

Process for conditioning standing and flowing water systems

The present invention relates to stable thixotropic polysuccinimide (PSI) dispersions, known as slurries, and to their use as additives for improving the flow properties of concrete, in oil wells, in acidic gel cleaners, and in drainage systems of tunnel constructions.

Thixotropic dispersions of polysuccinimide and their use

A process for coloring an unglazed ceramic with an aqueous colorant solution containing a chromium (III) coordination compound which is at least partially neutralized and stable, including (a) dissolving a carboxylic acid selected from the group consisting of acetic acid, an organic dicarboxylic acid having a general formula (COOH)&mdash;(CH ) &mdash;(COOH), where n ranges from 0 to 10, and an unsaturated, organic dicarboxylic acid in water at a temperature ranging from 40 to 60&deg; C. to provide an aqueous solution of a carboxylic acid; (b) adding a chromium (III) compound to the aqueous solution of a carboxylic acid while stirring for a time and at a temperature effective for reaction to form an aqueous solution containing a chromium (III) coordination compound; (c) filtering the aqueous solution containing the chromium (III) coordination compound to provide a filtered aqueous solution; and (d) adjusting pH of the filtered aqueous solution to a pH ranging from 3 to 6.5 by addition of one of alkali hydroxide or ammonia to provide the aqueous colorant solution containing a chromium (III) coordination compound which is at least partially neutralized, which is stable, and which has a chromium content ranging from 5 to 10% by weight.

Use of a colorant solution containing a stable, at least partially neutralized chromium (III) coordination compound for coloring unglazed ceramic

Method for coloring ceramic surfaces

Method for the coloring of ceramic surfaces

Aqueous ruthenium chloride solution for blackening ceramic surfaces

Growing community of inventors

Kö'ln, Germany

Thomas Klein