Abstract: Cyano-containing polymers can be prepared from polymers having isolated, non-activated double bonds and hydrogen cyanide in the presence of catalysts of the formulaNi[P(OR.sup.1).sub.3 ].sub.n (I)in whichR.sup.1 stands for alkyl or aryl andn denotes the number 3 or 4,and also in the presence of cocatalysts of the formulaAlR.sup.2.sub.3-m Hal.sub.m (II)in whichR.sup.2 stands for hydrogen, alkyl or cyano,Hal stands for chlorine, bromine or cyano andm denotes the number 0, 1, 2 or 3,and also, if appropriate, in the presence of a phosphite of the formulaP(OR.sup.1).sub.3 (III)in which R.sup.1 has the given meaning, in inert organic solvents at 40.degree. to 100.degree. C.

Abstract: 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.

Abstract: A process for the preparation of an aryl cyanamide comprising reacting an arylamine of the formula ##STR1## in which Ar is aryl,R is hydrogen or alkyl, andn is 1, 2 or 3,(excepting 2-nitroaniline, 4-nitroaniline and arylamines having a nucleophilic character equal to or lower than 2-nitroaniline and 4-nitroaniline), with cyanogen chloride in 1-2 times the molar amount per mole of amino group of the arylamine initially in a homogeneous liquid phase using as reaction medium acetic acid (which is optionally diluted with water and/or a water-miscible, organic auxiliary solvent) in the presence of 1-1.5 molar equivalents of an auxiliary base for each amino group of the arylamine, there being more cyanogen chloride than equivalents of auxiliary base present in the reaction mixture at any point in time of the reaction, the pH of the reaction mixture being maintained below 7.

Abstract: 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.

Abstract: Pesticidally active compounds of the formula ##STR1## in which R.sup.1 is an organic radical,R.sup.2 is hydrogen, trialkylsilyl, a hydrocarbon or acyl radical, andR.sup.3 and R.sup.4 independently are an amino, hydroxyl, hydroximino, alkoxy or like radical.Most of the compounds are new, as are various intermediates therefor.

Abstract: 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, andR.sup.2 is alkoxy,comprising reacting a 4-alkoxy-6-alkyl-2-amino-1,3,5-triazine of the formula ##STR2## with a cyanogen halide of the formulaHal--CNin whichHal is halogen,in the presence of twice the molar amount of butyl-lithium and in the presence of a diluent adding water and acidifying.

Abstract: R.sup.2 is alkoxy,R.sup.3 is H, or one equivalent of an alkali metal or alkaline earth metal ion, andR.sup.4 is one equivalent of an alkali metal or alkaline earth metal.The process is new and intermediate II is new. If R.sup.3 is an alkali or alkaline earth metal it can be converted to hydrogen by acid. The products are known intermediates for herbicides and plant growth regulators.

Abstract: 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,R.sup.2 is C.sub.1-4 -alkyl andn is an integer from 1 to 4, comprising reacting a trialkylsilyl cyanide of the formula(R.sup.2).sub.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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,R.sup.2 represents hydrogen or trialkylsilyl, and represents alkyl, cycloalkyl, alkenyl, alkinyl, aralkyl, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aryloxycarbonyl, alkylsulphenyl, arylsulphenyl, alkylsulphonyl, arylsulphonyl, alkylaminosulphonyl, dialkylaminosulphonyl, arylaminosulphonyl or arylalkylaminosulphonyl, each of which can optionally be substituted, and represents radicals of the formula--CO--NR.sup.5 R.sup.6whereinR.sup.5 and R.sup.6 independently of one another represent hydrogen, alkyl, cycloalkyl, aryl, alkylaminocarbonyl, arylaminocarbonyl, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aryloxycarbonyl, alkylsulphonyl or arylsulphonyl, it being possible for these radicals to be optionally substituted,R.sup.3 represents hydrogen or the radical R.sup.4,R.sup.7 and R.sup.

Abstract: 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.

Abstract: 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.

Abstract: Dicyanogen is prepared by reacting trimethylsilyl cyanide with cyanogen halides in the presence of Lewis acids.

Abstract: A process for the preparation of N,O-disubstituted urethanes. A substituted urea, an alcohol and a compound taken from the group consisting of N-unsubstituted urethanes, urea, polyurets and mixtures thereof at a temperature of 120.degree.-350.degree. C. The urethanes prepared by this process are particularly suitable for the preparation of isocyanates.

Abstract: The present invention is related to compositions containing isocyanatosilanes as additives to increase the stability in storage of liquid or pasty, clear or pigmented compositions containing polyurethane prepolymers with free isocyanate groups and optionally containing solvents.

Abstract: A process for the preparation of N,O-disubstituted urethanes. Urea or polyurets, primary amines and alcohols are reacted at 120.degree.-350.degree. C. in the presence of N-substituted urethanes and/or N-mono- or N,N'-disubstituted ureas or polyureas. In a preferred embodiment, the reactants further include catalysts known to be useful in esterification of carboxylic acids. The urethanes produced in accordance with this process are particularly useful as starting materials for preparation of isocyanates.

Abstract: This invention relates to a process for the preparation of silylisocyanates corresponding to the formula:R.sub.a Si(NCO).sub.b X.sub.cwhereinR denotes a hydrocarbon group,X denotes chlorine or bromine,a represents an integer of from 1 to 3,b represents an integer of from 1 to 3, andc represents an integer of from 0 to 2 and the sum of a+b+c=4.These silylisocyanates are produced by reacting halogen silanes corresponding to the formula:R.sub.a SiX.sub.b+cwith urea at atmospheric pressure in a polar solvent at a temperature of at least 100.degree. C.