Abstract: This invention relates to dehydropeptides containing a tryptophan moiety useful as tumour-resolving and/or histolytic medicaments. Also included in the invention are methods for the preparation of said dehydropeptides, compositions containing said dehydropeptides and methods for the use of said dehydropeptides and dehydropeptide compositions.

Abstract: The invention relates to a process for the production of 1,4-dihydropyridinecarboxylic acid compounds which involves hydrolysis, under alkaline conditions and in a temperature range from 10.degree. to 100.degree. C., of an ester group which contains an electron-attracting group. The invention also includes novel compounds made according to the invention as well as compositions containing said novel compounds. Also included in the invention are methods for the use of said compounds and compositions. The compounds obtained according to the process of the invention are useful because of their circulation-influencing action and are also useful as intermediates for the preparation of compounds having circulation-influencing action.

Abstract: The invention concerns agents for protecting the skin against UV-radiation, said agents comprising an oil or wax having dissolved therein a compound of the formula ##STR1## in which R is an n-hexyl, n-octyl or n-decyl radical or a primary isoalkyl radical with 9 or 10 carbon atoms.

Abstract: Water-hardening binding agent such as concrete, mortar, cement and the like are modified with a solid additive in the form of aggregates consisting of fine particle having a grain size of from 0.1 to 10 mm, preferably in pelletized or pressed grain form. These additives have an adjustable rate of dissolution and permit controlling the speed and manner of hardening of said water-hardening binding agent.

Abstract: Triazoles of the formula ##STR1## in which R.sub.1 is hydrogen or a substituent of the type indicated in the description,R.sub.2 is a substituent, orR.sub.1 and R.sub.2, together with the triazole ring carbon atoms to which they are bonded, form a carbocyclic or heterocyclic ring, andR.sub.3 is the radical of an aromatic-carbocyclic or aromatic-heterocyclic system,are obtained in an elegant manner when compounds of the formula II are treated with a basic compound, preferably a tertiary amine. The triazoles are, inter alia, valuable starting materials for the preparation of optical brighteners.

Abstract: The invention provides 4-pyridone-3-carboxylic acids and derivatives thereof together with a method for their preparation. Also included in the invention are compositions containing said 4-pyridone-3-carboxylic acids and derivatives and the use of said compounds and compositions as antibacterial and/or antifungal agents or for animal growth promotion or improved feed utilization.

Abstract: Coordinatively hexavalent complex salts of trivalent cobalt, in which four of the six coordination positions on the cobalt are occupied by the doubly negatively charged phthalocyanine ring system and the remaining two coordination positions are each occupied by an amine from the series of primary, secondary or tertiary aliphatic, aromatic or heterocyclic monoamines or polyamines and which are obtained by reaction of cobalt phthalocyanine compounds with primary, secondary or tertiary, aliphatic, aromatic or heterocyclic amine are prepared according to an improved process in that the cobalt phthalocyanine compounds used are those in which the central cobalt atom is present in the trivalent state, and which contain anions, bonded in the form of salts, from the series fluoride, chloride, bromide and iodide.

Abstract: A system for setting the sheet length on a cross-cutter for webs of material includes a computer which delivers to the positioning element of a speed changing mechanism, the positioning signal for one speed corresponding to the desired sheet length and to a controlled group for the positioning element of an irregular motion mechanism and to a control loop for the positioning element of a continuously variable speed transmission. The desired values correspond to the desired sheet length and the control loop for the continuously variable speed mechanism receives as a actual value, the sheet length and specifies to the positioning element, the positioning time on the basis of the deviation of the actual value from the desired value and of the speed selected. Another comparison of actual value with desired value is made only at the completion of each positioning operation.

Abstract: 3-Chlorostyryl-2,2-dimethyl-cyclopropanecarboxylic acid 4-fluoro-3-phenoxy-.alpha.-cyano-benzyl esters, which are useful as agents for combating ectoparasites, and a process for their preparation are described.

Abstract: Fluorine-containing phenylacetic acid esters of the formula ##STR1## in which R represents the radical of an alcohol customary in the case of pyrethroids,R.sup.1 represents C.sub.2-4 -alkyl, C.sub.2-4 -alkenyl or cyclopropyl,X represents H, halogen, alkyl, alkoxy, OCHF.sub.2, SCHF.sub.2, SCClF.sub.2 or SCF.sub.3 andX.sup.1 can vary widely or form a fused ring with X,the overall compound necessarily containing a fluorine atom, which compounds possess arthropodicidal properties. Intermediates therefor and an overall synthesis from an alcohol of the formula ROH and a toluene of the formula ##STR2## are also shown.

Abstract: In the preparation of anthraquinone by reacting a mixture containing naphthalene, phthalic anhydride and tetrahydroanthraquinone with oxygen at elevated temperature while simultaneously separating off at least part of the naphthalene, the improvement which comprises supplying the naphthalene, phthalic anhydride and tetrahydroanthraquinone to a distillation system which consists of a column having a rectifying section, a stripping section and a boiler, at least one of the stripping section and the boiler being designed so that rapid through-passage of the feed mixture is prevented. Downcomers in the stripping section maintain liquid levels on the trays of about 5 to 500 mm and the boiler may have several successive chambers to provide the desired residence time in the system.

Abstract: A process for incorporating photographic additives which are sparingly soluble to insoluble in water into a free-flowing, aqueous preparation which contains a hydrophilic colloid and is used to prepare photographic layers, by mixing the photographic additives with a combination of at least one non-ionic alkylphenol/alkylene oxide or diphenolmethane/alkylene oxide adduct and at least one anionic esterification product of these adducts and, optionally, a water-immiscible solvent and then finely dispersing this mixture in an aqueous solution of the hydrophilic colloid, which solution contains further water-soluble or dispersed water-insoluble constituents optionally.Spontaneous emulsions of the photographic additives with good fine dispersion are obtained in this way without high expenditure of mechanical energy. The emulsions are suitable for the preparation of photographic layers, which are used in photographic materials with improved characteristics.

Abstract: The present invention provides xanthine derivatives of the general formula: ##STR1## wherein one of the symbols R.sub.1 and R.sub.2 stands for a methyl radical and the other for a radical of the general formula: ##STR2## wherein R.sub.3 is a hydrogen atom or an acyl radical; and the pharmacologically acceptable salts thereof. The present invention also provides processes for the preparation of these compounds and pharmaceutical compositions containing them and is also concerned with the use thereof for the preparation of pharmaceutical compositions for the treatment of allergies.

Abstract: Anthraquinone derivatives which in one of their tautomeric structures correspond to the formula ##STR1## in which A denotes an anthraquinone radical which is free from sulphonic acid groups, is optionally further substituted and preferably consists of at most 5 fused rings,m is a number from 1-4 and preferably 1 or 2,R.sub.1 is hydrogen or a C.sub.1 -C.sub.4 -alkyl group andR.sub.2 is a cyano group or a radical of the formula ##STR2## or a radical of the formula ##STR3## in which formulae R.sub.3 is hydrogen, a straight-chain or branched alkyl group of a cycloalkyl radical,R.sub.4 is a substituent,n is 0, 1, 2, 3 or 4 andp is 0, 1, 2, 3, 4 or 5,processes for their preparation and their use for pigmenting organic macromolecular substances.

Abstract: Acyl cyanides of the formula ##STR1## in which R represents alkyl or substituted alkyl of from 1 to 8 carbon atoms, cycloalkyl or substituted cycloalkyl of from 3 to 12 carbon atoms, aryl or substituted aryl; or an optionally substituted 5-membered or 6-membered heterocyclic radical which can also be fused with a benzene ringare prepared by reacting the corresponding carboxylic acid anhydride in the presence of a carboxylic acid halide with an alkali metal cyanide or anhydrous acid, at a temperature of between 50.degree. and 300.degree. C.

Abstract: Halogen-containing bis-acrylates and bis-methacrylates corresponding to the formula ##STR1## in which R represents hydrogen or a methyl group and X represents chlorine and/or bromine, are provided as well as a process for producing such compounds. The compounds are useful for the formation of polymers and copolymers and as cross-linking agents. Also included in the invention are the polymers and copolymers based on the above-described halogen-containing bis-acrylates and bis-methacrylates, methods for the production of said polymers and the use of said polymers as flame proofing agents, etc.

Abstract: N-Chloroacetyl-N-(2,6-di-substituted phenyl)-alanine esters of the formula ##STR1## in which R represents alkyl with 3 or more carbon atoms, alkenyl, alkynyl, halogenoalkyl, cycloalkyl, cycloalkylalkyl, alkoxyalkyl, alkoxyalkoxyalkyl, alkylthioalkyl, alkylsulphinylalkyl, alkylsulphonylalkyl, acyloxyalkyl, dialkylaminoalkyl or optionally substituted arylalkyl,X represents alkyl or halogen, andY represents alkyl,which possess fungicidal properties.

Abstract: 1-Phenoxy-2-(2,4-dichlorophenyl)-1-(1,2,4-triazol-1-yl)-ethan-2-ones and -ols of the formula ##STR1## in which A is --C(O)-- or --CH(OH)--,X each independently is halogen, alkyl or optionally substituted phenyl, andn is 0, 1, 2 or 3,or a salt thereof, which possess fungicidal and antimicrobial properties rendering them useful in agriculture and pharmacy.

Abstract: Centrifugal separator having a piston valve 3 for opening and closing of apertures adjacent the periphery of the drum for discharge of solids through passageway 19. The drum is provided with a ring 16 which in part defines the passageway, and which has a lip 15. The piston valve has a lip 13. When the piston valve 3 moves down, the apertures are open, and after a short interval the lip 13 strikes the lip 15 closing the passageway 19. Thereby discharge of solids is stopped. Thus, the piston valve need move in only one direction, up or down, for a discontinuous discharge of solids. That provides better control, since for a discharge, the piston need be accelerated in only one direction.

Abstract: Water-soluble cationic dyestuffs are prepared by the reaction of dyestuffs of the formula ##STR1## wherein R and R.sub.1 represent alkyl,R.sub.2 represents alkyl, aralkyl, cycloalkyl or aryl or represents alkylene which is bonded to the ring A in the o-position relative to the nitrogen atom, andAn.sup.- represents an anion,and wherein the said radicals, the ring A and the naphthalene ring can contain nonionic substituents customary in dyestuff chemistry,and wherein at least one of the radicals R and R.sub.1 contains a hydroxyl group or a halogen atom or another group which can be split off as an anion,with polyhydric alcohols in the presence of a catalyst.