Bayer Aktiengesellschaft

Gerd Schmitz

Winfried Joentgen

Torsten Groth

Klaus Walz

Hans-Joachim Traenckner

Harro Traubel

Gunther Boehmke

Nikolaus Muller

Lutz Heuer

Jurgen Reiners

Udo Herrmann

Burkhard Mielke

Hermann Neumann

Michael Kressner

Josef Leitermann

Manfred Schnee

Gunter Boehmke

Guido Schmitt

The present invention relates to novel liquid formulations for the controlled and sustained release of insecticidally active compounds by means of a heat source and the water-based pre-solutions required for preparing these formulations.

Insecticide formulations

Pigment preparations

Use of polyaspartic acid amides as leather auxiliary products

N-containing polymers having repeating succinyl units are decolorized using activated hydrogen.

Process for decolorizing N-containing polymers

Polysuccinimide, polyaspartic acid and their salts are prepared by reaction of maleic anhydride and ammonia, polycondensation of the resulting product in the presence of a solubilizing agent and, if appropriate, hydrolysis.

Process for the preparation of polysuccinimide, polyaspartic acid and

Polysuccinimide is prepared by reaction of fumaric acid, maleic acid or a derivative thereof with urea, isourea, carbamic acid, ammonium carbamide, ammonium bicarbonate, diammonium carbonate or mixtures of the abovementioned substances in a reactor at temperatures of preferably 100.degree. C. to 300.degree. C. over reaction times of preferably 0.5 minute to 300 minutes.

Process for the preparation of polysuccinimide and polyaspartic acid

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Leverkusen, Germany

Gerd Schmitz