Abstract: A 4,5-dichloro-imidazole-1-carboxylic acid aryl ester of the formula ##STR1## in which X represents a group ##STR2## in which R.sup.2 and R.sup.3 conjointly with the adjoining nitrogen atom form a morpholine, thiamorpholine, or piperazine ring,Y represents halogen, alkyl with 1 to 6 carbon atoms, trifluoromethyl, alkoxy with 1 to 6 carbon atoms, alkylmercapto with 1 to 6 carbon atoms, nitro, cyano or ##STR3## in which R.sup.4 represents alkyl with 1 to 6 carbon atoms and n represents 0, 1, 2, 3, 4 or 5,which possesses plant protection properties especially herbicidal and plant growth regulant properties.

Abstract: A 4,5-dicloro-imidazole-1-carboxylic acid aryl ester of the formula ##STR1## in which X represents ##STR2## wherein R.sup.2 represents hydrogen, C.sub.1-8 alkyl, alkenyl, or the formyl group andR.sup.3 represents phenyl or substituted phenyland their use as herbicides.

Abstract: Process for the preparation of tetrachloropyrimidine, characterized in that 2-cyanoethyl isocyanide dichloride is reacted with chlorine in the gas phase in the temperature range from 200.degree.-650.degree. C.

Abstract: A 4,5-dichloro-imidazole-1-carboxylic acid aryl ester of the formula ##STR1## in which X represents trifluoromethyl, cyano or a group ##STR2## in which R.sup.1 represents a saturated or unsaturated aliphatic radical, which can be carrying one or more substituents selected from halogen, alkoxy with 1 to 6 carbon atoms and alkylmercapto with 1 to 6 carbon atoms, R.sup.2 represents hydrogen, alkyl with 1 to 8 carbon atoms, alkenyl with up to 8 carbon atoms or the formyl group, R.sup.

Abstract: 1-Acyloxymethyl-4,5-dichloro-imidazole-2-carboxylic acid derivatives of the formula ##STR1## in which X represents trifluoromethyl, cyano or a group ##STR2## in which R.sup.1 represents a saturated or unsaturated aliphatic radical, which can be carrying one or more substituents selected from halogen, alkoxy with 1 to 6 carbon atoms and alkylmercapto with 1 to 6 carbon atoms, R.sup.2 represents hydrogen, alkyl with 1 to 8 carbon atoms, alkenyl with up to 8 carbon atoms or the formyl group, R.sup.

Abstract: A 4,5-dichloro-imidazole derivative of the formula ##STR1## in which X represents trifluoromethyl, cyano or a ##STR2## or ##STR3## in which R.sup.1 represents a saturated or unsaturated aliphatic radical, which can be carrying one or more substituents selected from halogen, alkoxy with 1 to 6 carbon atoms and alkylmercapto with 1 to 6 carbon atoms,R.sup.2 represents hydrogen, alkyl with 1 to 8 carbon atoms, alkenyl with up to 8 carbon atoms or the formyl group,R.sup.

Abstract: A 4,5-dichloro-imidazole-1-carboxylic acid aryl ester of the formula ##STR1## in which X represents trifluoromethyl, cyano or a group ##STR2## in which R.sup.1 represents an optionally substituted saturated or unsaturated aliphatic radical, R.sup.2 represents hydrogen, alkyl with 1 to 8 carbon atoms, alkenyl with up to 8 carbon atoms or the formyl group, R.sup.3 represents alkyl with 1 to 8 carbon atoms or alkenyl or alkynyl each with up to 8 carbon atoms, it being possible for each of these alkyl, alkenyl and alkynyl radicals to carry one or more substituents, or represents cycloalkyl with 5 to 7 carbon atoms in the ring which is optionally substituted by alkyl with 1 to 6 carbon atoms, or represents phenyl which may optionally carry one or more substituents, or R.sup.2 and R.sup.

Abstract: 4,5-Dichloroimidazole-2-carboxylic acid derivatives of the formula ##STR1## in which the group ##STR2## represents a carbon atom which has three bonds to hetero-atoms, and their salts with bases,possess insecticidal, acaricidal, fungicidal, nematicidal and herbicidal properties.

Abstract: A 4,5-dichloro-imidazole derivative of the formula ##STR1## in which X represents trifluoromethyl, cyano or a ##STR2## in which R.sup.1 represents an optionally saturated or unsaturated aliphatic radical,R.sup.2 represents hydrogen, alkyl with 1 to 8 carbon atoms, alkenyl with up to 8 carbon atoms or the formyl group,R.sup.3 represents hydrogen, alkyl with 1 to 8 carbon atoms or alkenyl or alkynyl with up to 8 carbon atoms, it being possible for each of these alkyl, alkenyl and alkynyl radicals to carry one or more substituents, or represents cycloalkyl with 5 to 7 carbon atoms in the ring which is optionally substituted by alkyl with 1 to 6 carbon atoms, or represents phenyl which may optionally carry one or more substituents, orR.sup.2 and R.sup.

Abstract: Novel 1-acyloxymethyl-4,5-dichloro-imidazole-2-carboxylic acid derivatives of the formula ##STR1## in which X represents trifluoromethyl, cyano or a group ##STR2## in which R.sup.1 represents an optionally substituted saturated or unsaturated aliphatic radical, R.sup.2 represents hydrogen, alkyl with 1 to 8 carbon atoms, alkenyl with up to 8 carbon atoms or the formyl group, R.sup.3 represents alkyl with 1 to 8 carbon atoms or alkenyl or alkynyl each with up to 8 carbon atoms, it being possible for each of these alkyl, alkenyl and alkynyl radicals to carry one or more substituents, or represents cycloalkyl with 5 to 7 carbon atoms in the ring which is optionally substituted by alkyl with 1 to 6 carbon atoms, or represents phenyl which may optionally carry one or more substituents, or R.sup.2 and R.sup.

Abstract: Process for the preparation of 2,4,5-trichloropyrimidine, characterized in that compounds of the formula ##STR1## wherein R a radical which can be split off under the reaction conditions andR' an optionally substituted lower alkyl radical,Are reacted at temperatures from 0.degree. to 50.degree. C. with less than 7.5 mols of chlorine, in particular 3.5 to 7.0 mols of chlorine, and the reaction products are then after-heated to temperatures of 100.degree.-150.degree. C., in particular 110.degree.-140.degree. C., in the absence of chlorine.

Abstract: A regenerator lining for regenerator chamber cells in coke ovens, comprises a stone or brickwork having either a honeycomb or lamellar structure, with a plurality of gas passages extending therethrough and terminating in openings on the top and bottom sides of the structure. The transverse portions or sides are made of frame portions having a material thickness of up to 20mm. The webs or spacing between the openings is up to 10mm in thickness. In the case of circular, hexagonal, or similar shape passages, the openings have diameters of up to 16mm and in a construction which includes a slot formation, the slots are made up to 16mm wide.

Abstract: A clamping arrangement for clamping connecting flanges of two machine housings which includes a number of tightening claws or clamping shoes distributed about a circumference of the connecting flanges for clamping the connecting flanges together. Tightening surfaces are provided on the tightening claws or clamping shoes and the connecting flanges for drawing the connecting flanges together. At least one radially extending bolt is provided for each of the tightening claws or clamping shoes with the bolt passing through an associated tightening claw or clamping shoe.

Abstract: Process for the preparation of 2,4,5-trichloropyrimidine, characterized in that compounds of the formula ##STR1## wherein R = a radical which can be split off under the reaction conditionsAre reacted with more than 7 and less than 13 mols of chlorine, in particular 11 mols of chlorine, at temperatures from 0 - 40.degree. C. and the reaction mixture is then subsequently heated in the absence of chlorine to temperatures from about 100 - 150.degree. C., in particular 110 - 140.degree. C.

Abstract: Process for the preparation of tetrachloropyrimidine, characterized in that compounds of the formula ##STR1## wherein R = a radical which can be split off under the reaction conditions,Are reacted with chlorine or agents which release chlorine, preferably at temperatures from 0.degree.-150.degree. C and using more than 7 mols of chlorine, in particular using 11-13 mols of chlorine.

Abstract: Process for the preparation of tetrachloropyrimidine, characterized in that compounds of the formula ##STR1## wherein R = a radical which can be split off under the reaction conditions andR' = optionally substituted lower allyl radical, are reacted with chlorine or agents which release chlorine, preferably at temperatures from 0.degree. to 150.degree. C and using more than 7.5 mols of chlorine, preferably 8 to 9 mols of chlorine.

Abstract: Coal to be supplied to a coking oven is pre-heated, in a single pre-heating zone, such as in a conveying riser, first by heat yielded to it by a gaseous carrier medium entraining the coal for joint passage through the riser, and then additionally pre-heated by heat yielded to it by a gaseous fluid, such as hot combustion products, introduced into the pre-heating zone at a region thereof at which the temperature of the coal has already risen to a predetermined value, such as 80.degree. to 100.degree. C. The additional pre-heating of the coal results in a final temperature of the latter at the exit of the riser of more than 130.degree. C, preferably between 150.degree. and 250.degree. C. The stream of the carrier medium with the coal entrained therein flows upwardly through the riser which is substantially vertical, the coal being entrained at the lower end and separated from the mixture of the carrier medium with the gaseous fluid at the upper end of the riser.

Abstract: In a coking process wherein coal is subjected to coking in chamber furnaces by means of combustion of a fuel gas in the heat flues of the furnace and transfer of the generated heat through the walls of the furnace, the heat supply is effected, during the entire course of the coking operation, according to a preestablished programmed control scheme related to a uniform or mean rate of heat supply, the supply of heat being at a maximum at the commencement of the coking operation and being gradually reduced during the continuing coking operation.

Abstract: New imidazolidinedione compounds of the formula ##STR1## in which R is chlorine, alkyl of 1 or 2 carbon atoms or chloroalkyl of 1 or 2 carbon atoms and 1 to 5 chlorine atomsAre outstandingly effective as plant growth regulants and have surprisingly been found to exhibit substantially greater activity than conventional materials of this type.

Abstract: A cokable substance such as coal is admitted into a coking chamber. A quantity of heat which is sufficient to cause coking of the cokable substance is supplied to the chamber during preselected time intervals within the coking period in which coking of the cokable substance progresses in response to the supply of heat. On the other hand, during other time intervals within the coking period in which coking of the cokable substance is essentially unaffected by the supply of heat, the quantity of heat supplied to the chamber is reduced to a level below that required to sustain coking of the cokable substance during the preselected time intervals. In this manner, savings in energy may be realized. The supply of heat to the chamber during those time intervals in which coking of the cokable substance is unaffected by the supply of heat may be discontinued completely.