Abstract: Compounds having a melting point above 40.degree. C. which compounds contain uretone imine groups and which are substantially free from volatile isocyanate blocking agents which are split off under stoving conditions are excellent crosslinking agents for pulverulent coating compositions based on hydroxyl groups-containing polymers.

Abstract: The present invention relates to a new organic heterocyclic isocyanate which is the reaction product of an organic diisocyanate and an amino or hydroxy nitrile. The invention also relates to a process of producing such isocyanates by reacting an excess of the diisocyanate with the nitrile under conditions under which the nitrile will not decompose and then maintaining the reaction mixture at an elevated temperature until the isocyanate nitrile adduct cyclizes. The reaction may be carried out in the presence of a catalyst for isocyanate addition reactions. Additionally, the invention relates to a process for the production of polyurethane by the reaction of the heterocyclic isocyanates with compounds carrying at least two isocyanate reactive hydrogen atoms per molecule.

Abstract: The present invention relates to a new organic heterocyclic isocyanate which is the reaction product of an organic diisocyanate and an amino or hydroxy nitrile. The invention also relates to a process of producing such isocyanates by reacting an excess of the diisocyanate with the nitrile under conditions under which the nitrile will not decompose and then maintaining the reaction mixture at an elevated temperature until the isocyanate nitrile adduct cyclizes. The reaction may be carried out in the presence of a catalyst for isocyanate addition reactions. Additionally, the invention relates to a process for the production of polyurethane by the reaction of the heterocyclic isocyanates with compounds carrying at least two isocyanate reactive hydrogen atoms per molecule.

Abstract: Acyl cyanides of the general formula ##STR1## in which R represents alkyl or substituted alkyl of from 1 to 8 carbon atoms; cycloalkyl or substituted cycloalkyl with 3 to 12 carbon atoms; aryl or substituted aryl; or an optionally substituted 5-membered or 6-membered heterocyclic radical which can additionally also be fused with a benzene ring,are prepared by reacting the corresponding carboxylic acid anhydride with an alkali metal cyanide or anhydrous hydrocyanic acid, at a temperature of between 50.degree. and 250.degree. C. and the resulting acyl cyanide is removed from the reaction medium by distillation, immediately after it has been formed.

Abstract: A process for the preparation of a 4,6-dihalogeno-triazine of the formula ##STR1## wherein R represents an aryl or aryloxy radical or 5 or 6-membered nitrogen-containing aromatic heterocyclic radical which can be optionally mono or polysubstituted by a C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogeno, nitro, cyano, C.sub.1 -C.sub.4 -carbalkoxy, aryl or aryloxy andHal.sup.1 denotes a halogen atom is described wherein a trihalogenomethyl compound of the formulaR--C (Hal.sup.2).sub.3whereinR has the meaning indicated above andHal.sup.2 represents a halogen atom is reacted with Hal.sup.1 --CN in which Hal.sup.1 has the meaning indicated above at a temperature of 50.degree. to 200.degree. C. in the presence of a Lewis acid. Optionally the process can be conducted in the presence of an inert solvent.

Abstract: This invention relates to new polyols modified by guanidine groups, to a process for the preparation thereof and to the use thereof as starting component for the preparation of preferably foamed polyurethane plastics. The process involves (A) reacting diisocyanato-carbodiimides corresponding to the following general formula:OCN--(R.sup.2 -N=C=N).sub.m R.sup.2 --NCOat a temperature of from about 25.degree. to 130.degree. C., optionally in the presence of an inert solvent, with polyhydroxyl compounds corresponding to the following general formula:A--OH).sub.nin an OH/NCO-ratio of from 1.2:1 to 30:1 to form a polyhydroxyl compound containing carbodiimide groups and (B) completely or partly reacting, at a temperature of from 0.degree. to 150.degree. C., the remaining carbodiimide groups remaining in the production of Step (A), optionally in the presence of an inert solvent, with an amine, amide or hydrazide corresponding to the following general formula:R.sup.3 --NR.sup.1 H).sub.

Abstract: The present invention relates to new polyols modified by phosphonoformamidine groups, to a process for the preparation thereof and the use thereof as starting component for the preparation of preferably foamed polyurethane plastics.The process involves (A) reacting diisocyanatocarbodiimides corresponding to the following general formula:OCN--R.sup.2 --N.dbd.C.dbd.N).sub.m R.sup.2 --NCOat a temperature of from about 25 to 130.degree. C., optionally in the presence of an inert solvent, with polyhydroxyl compounds corresponding to the following general formula:A--OH).sub.nin an OH/NCO-ratio of from 1.2:1 to 30:1 to form a polyhydroxyl compound containing carbodiimide groups and (B) completely or partially reacting the carbodiimide groups remaining in the product of step (A) by means of a basic catalyst at a temperature of from 25 to 150.degree. C.

Abstract: New polyols modified by acyl urea groups, process for the preparation thereof and use thereof as starting component for the preparation of preferably foamed polyurethane plastics. The process involves (A) reacting diisocyanatocarbodiimides corresponding to :OCN--R.sup.2 --N.dbd.C.dbd.N .sub.M --R.sup.2 --NCOwith polyhydroxyl compounds corresponding to:A--OH).sub.nto form a polyhydroxyl compound containing carbodiimide groups and (B) completely or partially reacting, the carbodiimide groups remaining in the product of step (A), with a carboxylic acid corresponding to the following general formula: ##STR1## to form acyl urea groups, and (C) distilling off the inert solvent, if used; whereinm represents a number of from 1 to 10;s represents an integer of from 1 to 3; andR.sup.1 represents hydrogen or a monofunctional or--in the form of a bridge to further acyl groups--a di- or trifunctional C.sub.1 -C.sub.18 aliphatic, C.sub.4 -C.sub.15 cycloaliphatic, C.sub.6 -C.sub.

Abstract: A process for the preparation of a nitrile of the formulaR--(CN).sub.n'wherein R represents an optionally substituted alkyl, cycloalkyl or aryl radical or an optionally substituted 5- or 6-membered heterocyclic radical which may additionally be fused with a benzene ring and n' represents 1 to 6 which comprises contacting a carboxylic acid of the formulaR--(COOH).sub.n'wherein R and n' have the meanings given above with cyanogen chloride and/or cyanogen bromide at a temperature in the range of 100.degree. to 300.degree. C.

Abstract: The present invention relates to new polyols modified by phosphonoformamidine groups, to a process for the preparation thereof and the use thereof as starting component for the preparation of preferably foamed polyurethane plastics.The process involves (A) reacting diisocyanatocarbodiimides corresponding to the following general formula:OCN--R.sup.2 --N.dbd.C.dbd.N).sub.m R.sup.2 --NCOwith polyhydroxyl compounds corresponding to the following general formula:A--OH).sub.nto form a polyhydroxyl compound containing carbodiimide groups and (B) reacting the carbodiimide groups remaining in the product of step (A) by means of a basic catalyst with a phosphite corresponding to the following general formula: ##STR1## to form phosphonoformamidine groups wherein m represents a number of from 1 to 10, andR.sup.1 represents a C.sub.1 -C.sub.18 aliphatic, C.sub.4 -C.sub.15 cycloaliphatic or C.sub.6 -C.sub.

Abstract: This invention relates to new polyols modified by guanidine groups, to a process for the preparation thereof and to the use thereof as starting component for the preparation of preferably foamed polyurethane plastics. The process involves (A) reacting diisocyanato-carbodiimides corresponding to the following general formula:OCN--R.sup.2 -N.dbd.C.dbd.N).sub.m R.sup.2 -NCOat a temperature of from about 25.degree. to 130.degree. C., optionally in the presence of an inert solvent, with polyhydroxyl compounds corresponding to the following general formula:A--OH).sub.nin an ON/NCO-ratio of from 1.2:1 to 30:1 to form a polyhydroxyl compound containing carbodiimide groups and (B) completely or partly reacting, at a temperature of from 0.degree. to 150.degree. C., the remaining carbodiimide groups remaining in the production of Step (A), optionally in the presence of an inert solvent, with an amine, amide or hydrazide corresponding to the following general formula:R.sup.3 --NR.sup.1 H).sub.

Abstract: The present invention relates to a new organic heterocyclic isocyanate which is the reaction product of an organic diisocyanate and an amino or hydroxy nitrile. The invention also relates to a process of producing such isocyanates by reacting an excess of the diisocyanate with the nitrile under conditions under which the nitrile will not decompose and then maintaining the reaction mixture at an elevated temperature until the isocyanate nitrile adduct cyclizes. The reaction may be carried out in the presence of a catalyst for isocyanate addition reactions. Additionally, the invention relates to a process for the production of polyurethane by the reaction of the heterocyclic isocyanates with compounds carrying at least two isocyanate reactive hydrogen atoms per molecule.

Abstract: This invention relates to new polyols modified by acyl urea groups, to a process for the preparation thereof and to the use thereof as starting component for the preparation of preferably foamed polyurethane plastics. The process involves (A) reacting diisocyanatocarbodiimides corresponding to the following general formula:OCN--R.sup.2 --N.dbd.C.dbd.N).sub.m R.sup.2 --NCOat a temperature of from about 25.degree. to 130.degree. C., optionally in the presence of an inert solvent, with polyhydroxyl compounds corresponding to the following general formula:A--OH).sub.nin an OH/NCO-ratio of from 1.2:1 to 30:1 to form a polyhydroxyl compound containing carbodiimide groups and (B) completely or partially reacting, the carbodiimide groups remaining in the product of step (A) at a temperature of from 25.degree. to 100.degree. C.

Abstract: This disclosure relates to a process for the preparation of alkoxymethylisocyanates by reacting alkoxylmethyl tri-substituted ureas with isocyanates which have higher boiling points than the alkoxy methyl isocyanates produced. The process is also applicable to alkenoxy methyl tri-substituted ureas to make the corresponding isocyanates. Ureas of commercial purity may be used to obtain good yields of isocyanate when between about 0.03 and 0.2 mol of carbodiimide groups are present per mol of urea group. The carbodiimide containing compounds may also carry free isocyanate groups, in which case they should have a boiling point above that of the isocyanate product.

Abstract: Novel heterocyclic diisocyanates are prepared by reacting a urea diisocyanate of the formula ##STR1## IN WHICH B is a divalent organic radical and n is an integer of 1 to 3 with a compound having the formulaHal--y--Halin which y is --C--C--; --C--S--; --C--N--C--; --S--N--C. The novel heterocyclic diisocyanates are useful in making polyurethanes and polyurethane-ureas having improved chemical and temperature resistance.

Abstract: Acyl cyanides of the formula ##STR1## wherein R is alkyl or substituted alkyl with 1 to 8 carbon atoms, or cyano-carbonyl substituted alkyl, i.e., containing another ##STR2## group, cycloalkyl or substituted cycloalkyl with 3 to 12 carbon atoms or aryl or substituted aryl or represents an optionally substituted 5-membered or 6-membered heterocyclic radical which can additionally also be fused with a benzene ring,Are made by reacting the corresponding acid halide with an alkali metal cyanide or anhydrous hydrocyanic acid in the presence of a heavy metal cyanide and optionally in the presence of a diluent, at a temperature of between 100.degree. C. and 300.degree. C.

Abstract: A process for the preparation of a chlorinated pyrimidine, chloroalkyl-substituted in the 5-position of the general formula ##STR1## wherein R.sub.1 represents fluorine, chlorine, bromine, trichloromethyl, phenyl or hydrogen or a second chlorinated pyrimidine ring substituted in the 5-position,R.sub.2 represents hydrogen, fluorine, chlorine, bromine, alkyl with 1 to 6 C-atoms, phenyl, nitrophenyl or chlorophenyl,R.sub.3 represents hydrogen, fluorine, bromine or chlorine andR.sub.4 represents fluorine, chlorine, bromine, trichloromethyl or hydrogen; which comprises contacting a halogeno-azaalkene of the formula ##STR2## wherein R.sub.1 represents fluorine, chlorine, bromine, trichloromethyl, phenyl, hydrogen or --CCl.sub.2 --N.dbd.CCl.sub.2 ;R.sub.4 represents fluorine, chlorine, bromine of trichloromethyl; andR.sub.5 represents fluorine, chlorine, bromine or hydrogen with an .alpha., .beta.-unsaturated nitrile of the formula ##STR3## wherein R.sub.

Abstract: This invention relates to a process for producing stable water dispersible blocked polyisocyanates, the compounds so produced and their use in producing coatings and films. These compounds are produced by blocking about 50 to 99.8 weight % of the isocyanate groups of an organic polyisocyanate and then reacting the partially blocked polyisocyanate with a compound carrying both an isocyanate reactive hydrogen and a hydrophilic group, e.g. a carboxylic acid salt or polyethylene oxide or a group convertible to a hydrophilic group, e.g. a carboxylic acid or tertiary amine. The blocked polyisocyanate with hydrophilic groups may then be dispersed in water with organic compounds having at least two isocyanate reactive hydrogen atoms per molecule and then cured by driving off the water and raising the temperature sufficiently high to unblock the polyisocyanate.

Abstract: The present invention relates to a new process for the partial carbodiimidization of the isocyanate groups of organic mono-, or di- and/or polyisocyanates, the mixtures which can be obtained by this process and the use of these mixtures as isocyanate components in the production of polyurethane plastics by the known isocyanate polyaddition process. In general, the process comprises:(a) mixing organic mono-, di- and/or polyisocyanates with 0.1 to 100 ppm of a phosphorus compound of the general formula ##STR1## wherein R represents a lower alkyl radical, a phenyl radical, an alkoxy radical, a hydrogen atom or an alkenyl radical; a, b, c and d each represent hydrogen, a halogen atom, a lower alkyl, lower alkenyl, phenyl, a cyclohexyl or a polymethylene group which together with two neighboring C-atoms of the heterocyclic ring forms a cycloaliphatic ring; and X represents an oxygen or sulphur atom; at a temperature from about 0.degree. to about 200.degree. C.

Abstract: Acyl cyanide compounds of the formula ##STR1## are prepared by reacting an acid halide of the formula ##STR2## with anhydrous hydrocyanic acid in the presence of a tertiary amine at a temperature between -70.degree. and +100.degree. C. R can be hydrocarbyl or substituted hydrocarbyl and X is halogen.