Bayer Aktiengesellschaft

Rudolf Fauss

Kurt Findeisen

Bernhard Homeyer

Hans-Jochem Riebel

Klaus Konig

Benedikt Becker

Peter Heitkamper

Ingeborg Hammann

Kuno Wagner

Werner Rasshofer

Gerhard Jager

Holger Meyborg

Hans J Meiners

Reinhard Lantzsch

Jan Mazanek

Karl-Heinz Linker

Hans-Joachim Scholl

Michael Sonntag

Rudolf Sundermann

Herbert Salzburg

Gerhard Mennicken

Stefan Penninger

Kurt Findelsen

Uwe Dobereiner

Mark Seidler

Margarethe H Witte, Heir

Klaus G Witte, Heir

Karin Witte, Heir

Joseph W Witle, Deceased

Peter Heitk/a/ Mper

Cyano-containing polymers can be prepared from polymers having isolated, non-activated double bonds and hydrogen cyanide in the presence of catalysts of the formula

Cyano-containing polymers

Polyamines containing from 0.19 to 20.3 wt. % aromatically bound primary amino groups are produced by hydrolyzing an isocyanate group containing compound in the presence of excess water, a tertiary amine and, optionally an ether solvent. The hydrolysis is carried out at a temperature of from -10.degree. to 150.degree. C. in a manner such that the reaction mixture remains substantially homogeneous. The isocyanate starting material contains aromatically bound isocyanate groups and has an NCO-content of from 0.5 to 40 wt. %. The ether solvent must be water soluble and inert with respect to isocyanates. Co-solvents and catalysts may also be included in the reaction mixture. The product polyamines are particularly useful in the production of polyurethanes.

Polyamines and a process for the production thereof

A process for the preparation of an aryl cyanamide comprising reacting an arylamine of the formula ##STR1## in which Ar is aryl,

Preparation of aryl cyanamides from arylamines and cyanogen chloride

Monocyclohexylurea can be prepared particularly selectively if 100 parts by weight of cyclohexylamine are reacted with 70 to 300 parts by weight of urea in the presence of water in the boiling range of water.

Process for the preparation of monocyclohexylurea

Pesticidally active compounds of the formula ##STR1## in which R.sup.1 is an organic radical,

Use of substituted malonic acid derivatives as agents for combating pests

Process for the preparation of

A process for the preparation of a 4-alkoxy-6-alkyl-2-cyanoamino-1,3,5-triazine of the formula ##STR1## in which R.sup.1 is alkyl, and

A process for the preparation of a substituted trialkylsilyloxymalonic acid dinitrile of the formula ##STR1## in which R.sup.1 is optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted heteroaryl,

Preparation of substituted trialkylsilyloxymalonic acid dinitriles

A process for the preparation of urethanes. Urethanes having the general formula R.sub.1 (NHCOOR.sub.2).sub.n are reacted with an alcohol at a temperature of 120.degree. to 400.degree. C. in amounts such that, for every mol of the urethane, at least one mol of the alcohol is present. R.sub.1 is a radical obtained by removing the isocyanate groups from an n-functional organic isocyanate, which isocyanate has a boiling point greater than 100.degree. C. at atmospheric pressure. R.sub.2 is a radical obtained by removing the hydroxyl group from a monohydric alcohol which has a boiling point greater than 140.degree. C. at atmospheric pressure.

Process for the preparation of urethanes

The present invention relates to new substituted hydroxy-malonic acid amide-thioamides of the formula (I) ##STR1## in which R represents optionally substituted alkyl, optionally substituted alkenyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted heteroaryl, and a process for their preparation and their use as agents for combating pests, in particular insecticides and acaricides.

Pesticidal novel substituted hydroxymalonic acid amide-thioamides

A process for preparing dimethylsilyl dicyanide comprising reacting trimethylsilyl cyanide with dimethylsilyl dichloride. Advantageously the trimethylsilyl chloride formed as a by-product in the course of the reaction is continuously removed from the reaction, the trimethylsilyl cyanide starting material is produced by reacting trimethylsilyl chloride with an alkali metal cyanide, and the by-product trimethylsilyl chloride of the principal reaction is recycled to the preparation of trimethylsilyl cyanide.

Process for preparing dimethylsilyl dicyanide

The present invention relates to combating pests with five-membered nitrogen-containing heterocyclic compounds of the formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3, X and Y have the meaning given in the description. Many of the compounds are new.

Five-membered nitrogen-containing hetero-cyclic compounds and their use

Insecticidally active novel substituted malonic acid diamide insecticides of the formula ##STR1## wherein R.sup.1 represents aryl or heteroaryl, each of which can optionally be substituted,

Substituted malonic acid diamide insecticides, compositions and use

Polyamines containing aromatically bound primary amino groups having an NH.sub.2 -content of from 0.19 to 20.3 wt % are produced by a single stage process. A compound containing aromatically bound NCO-groups and having an isocyanate content of from 0.5 to 40 wt % is hydrolyzed with an excess of water in the presence of a water-miscible polar solvent and optionally a catalyst. The hydrolysis is carried out at a temperature of from -10.degree. to 150.degree. C. in a manner such that the reaction mixture is substantially homogeneous. The water-miscible polar solvent generally has a boiling point of from 56.degree. to 250.degree. C. and a dielectric constant of at least 10. This polar solvent is used in a quantity of at least 5 parts solvent for every 100 parts of isocyanate. Tertiary amines are the preferred catalysts. These polyamines are particularly useful in the production of polyurethanes.

Polyamines and a process for their production

A process for the preparation of a tartronic ester of the formula ##STR1## in which R.sub.1 and R.sub.2 each independently is an optionally substituted alkyl or cycloalkyl radical, comprising reacting (trimethylsilyloxy)tricyanomethane in the presence of a mineral acid, with at least one alcohol of the formula R.sub.1 OH and R.sub.2 OH and hydrolyzing the product of reaction. Advantageously the alcohols are employed in at least three times the molar amount of the (trimethylsilyloxy)tricyanomethane, and the reaction and hydrolysis are carried out in immediate succession in the same reaction vessel.

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Cologne, Germany

Rudolf Fauss