Abstract: An electrophotographic recording medium which consists essentially of an electrically conductive base and a photosemiconductive double layer which comprises a first layer containing charge carrier-producing dyes, and a second layer containing one or more compounds which are charge carrier-transporting when exposed to light, wherein the charge carrier-producing dyes are those of the formula I ##STR1## or of the formula II ##STR2## where R.sup.1 is hydrogen, alkyl, aralkyl, alkyl or alkylaryl, and Z may be a a fused aromatic system, and the degree to which the aromatic skeleton is halogen-substituted is from 45 to 75% of the maximum possible, and a process for the production of this electrophotographic recording medium.

Abstract: Quinol-4-ylmethane derivatives of the formula I ##STR1## where R.sup.1 is hydrogen or chlorine, R.sup.2 is trifluoromethyl or chlorine, R.sup.3 is a nitrogen-containing, cyclic-unsaturated or acyclic-saturated radical of not more than 6 carbon atoms, R.sup.4 is hydrogen or an anion-stabilizing group and R.sup.5 is hydrogen, an anion center or an acetal radical of not more than 8 carbon atoms, their preparation and their use for the preparation of quinol-4-ylmethane derivatives.

Abstract: 2H-1,2,4,6-Thiatriazine-1,1-dioxides of the formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3 and Y have the meanings given in the description, are used for controlling undesirable plant growth.

Abstract: A process for the preparation of aqueous thermosetting electrical insulating varnishes, wherein polyester-imide precondensates are prepared by condensing aromatic tricarboxylic acid monoanhydrides, diamines, diols, triols containing an isocyanurate ring, and cyclic trimerization products of diisocyanates, whose free isocyanate groups are blocked, with or without aromatic dicarboxylic acids or their esterifiable derivatives, and are reacted, at from 50.degree. to 200.degree. C., with or without addition of from 1 to 10% by weight, based on polyester-imide, of a polar organic solvent, with ammonia or an organic amine, and then diluted with fully demineralized water, with or without addition of a water-soluble curing catalyst. The novel electrical insulating varnishes are used as wire enamels or impregnating varnishes.

Abstract: An improved process for the continuous preparation of polycaprolactam, in which .epsilon.-caprolactam is partially polymerized, with the addition of a water-containing agent and acetic acid or propionic acid as a chain regulator, at a nylon-forming temperature, in a mechanically mixed zone in a vertical tubular reactor through which the reaction mixture flows downwards, and is then polymerized further, in additional heat exchange zones, until the desired degree of polymerization is reached, and polycaprolactam is then discharged as a melt, wherein a gaseous mixture of caprolactam, water and acetic acid or propionic acid is removed at the top of the tubular reactor and is fed to the middle of a column, water is removed at the top of the column, the bottom of the column is maintained at from 125.degree. to 145.degree. C., and the mixture obtained at the bottom of the column, and comprising caprolactam, acetic acid or propionic acid and a small amount of water, is recycled to the top of the tubular reactor.

Abstract: Trifluoromethoxyphenyl-(di)-thiophosphoric acid esters of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and X have the meanings given in the description, and their use in pest control.

Abstract: Aromatic amines (anilines) are obtained directly or via the corresponding cycloaliphatic amines by an aminating/hydrogenating reaction of phenols with ammonia and hydrogen over a supported palladium catalyst which also contains elements from group 1b, 2b or 7b of the periodic table as well as iron, cobalt or nickel, as such or in the form of their compounds, and, preferably, an inorganic base, said catalysts also having dehydrogenating properties.

Abstract: Polyether-based thickeners for aqueous systems having molecular weights of about 1000 to about 75,000 which are modified with at least one glycidyl ether having about 12 to about 18 carbon atoms exhibit increased thickening efficiency in the presence of certain organic additives. These are ethoxylated phosphate esters or mixtures of said esters with water-soluble amines. The polyethers contain about 1 to about 20 percent by weight based upon the weight of the polyether of an alpha-olefin oxide. Polyether-based thickeners containing at least one of an ethoxylated phosphate ester, or said ester in admixture with a water-soluble amine, processes for the preparation of thickened aqueous systems, and thickened aqueous compositions are disclosed. The polyether-based thickeners of the invention are particularly useful for thickening water or water-glycol mixtures which are useful as hydraulic fluids.

Abstract: Novel (hetarylphenoxy)-(phenylpiperazinyl)-propanols of the formula ##STR1## where R.sup.1 is hydrogen, amino or alkyl of 1 to 4 carbon atoms, R.sup.2 is hydrogen, halogen, alkyl of 1 to 4 carbon atoms or alkoxy where alkyl is of 1 to 3 carbon atoms, the phenyl ring can be monosubstituted or disubstituted by R.sup.2, and the heterocyclic structure Het. is pyrimidinyl, triazol-1-yl, imidazol-1-yl, pyrazol-3-yl or isoxazol-3-yl, and their physiologically tolerated addition salts with acids, processes for their preparation, and pharmaceutical formulations which contain these compounds and exhibit predominantly hypotensive, sedative, neuroleptic and broncholytic properties.

Abstract: A process for the preparation of compounds of the formula I ##STR1## where R is alkyl, by sulfonation, chlorination and nitration starting from an alkylbenzene, wherein the alkylbenzene is sulfonated with from 2.5 to 3, preferably from 2.65 to 2.75, moles of concentrated sulfuric acid per mole of alkylbenzene, the reaction product is then reacted with from about 1.1 to 1.3 moles of chlorine in the absence of a catalyst, the product is subsequently nitrated with highly concentrated nitric acid at elevated temperatures and the nitro compound is isolated.

Abstract: Herbicides containing a mixture of a cyclohexane-1,3-dione derivative of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, Y and n have the meanings given in the description, and a 3,6-dichloro-2-picolinic acid derivative of the formula ##STR2## where R has the meaning given in the description. These herbicide mixtures display a synergistic action, especially on grassy plants.

Abstract: Rectangular heat-insulating panels of a semi-rigid foam plastic, in particular a foam produced from polystyrene beads, are provided on both sides with a plurality of incisions which run at right angles to the principal plane of the panel and parallel to one end face. The four end faces each have matching tongue and groove profiles. The insulating panels may be used for the heat insulation of parts of buildings, especially of pitched roofs.

Abstract: Polyadducts/polycondensates which can be diluted with water when protonated with an acid and which contain basic nitrogen groups are obtained by the polyaddition reaction of(A) a Mannich base obtained from a monophenol and/or a polyphenol, one or more secondary amines which contain one or more hydroxyalkyl groups, or a mixture of a secondary amine of this type with another secondary amine, and formaldehyde with(B) one or more epoxy resins,and contain groups, which are bonded to aromatic rings, of the formula (I) ##STR1## where R.sup.1 and R.sup.2 are each alkyl of 1 to 9 carbon atoms, or hydroxyalkyl or alkoxyalkyl, each of 2 to 10 carbon atoms, or are linked to one another to form a 5-membered or 6-membered ring, and R.sup.3 and R.sup.4 are each hydrogen or methyl.These products are useful as binders for cathodic electrocoating.

Abstract: N-Substituted 2-methylnaphthylamides of the formula ##STR1## where R.sup.1 and R.sup.2 have the meanings given in the description, their preparation and their use for controlling fungi.

Abstract: A process, carried out without a diluent or in solution, in more than 2 reaction zones, for the continuous preparation of rubber-modified polymers of vinylaromatics, wherein a monomeric aromatic vinyl compound and an elastomeric polymer, in an amount of from 3 to 16% by weight based on the monomer, are polymerized, in the absence of a free radical initiator, but in the presence of a mercaptan as a chain transfer agent, at from 80.degree. to 180.degree. C. in a first reaction zone, with stirring, up to a maximum monomer conversion, U.sub.max, given by the equationU.sub.max =K-1where K is the amount of rubber in % by weight based on monomer, and, in a second reaction zone, polymerization is continued, with stirring, to a conversion of up to about 50% by weight, after which a chain transfer agent is introduced in an amount of from 0.01 to 0.

Abstract: This invention relates to a process for the separation of a nitrated substance from a spent nitrating acid wherein said nitrated substance contains polar groups selected from the group consisting of --SO.sub.3 H, --OH, --SH --CO.sub.2 H, --OSO.sub.3 H, and --OP(OH).sub.2 and their salts. This is achieved by:(1) diluting the nitrated substance-spent acid solution with water,(2) adding a monohydric alcohol or ketone extraction agent which is immiscible with the spent acid,(3) permitting the mixture to separate into layers of different densities one of said layers comprising said nitrated substance dissolved in said extracting agent,(4) removing said nitrated substance-extracting agent layer,(5) separating the nitrated substance from the extracting agent layer, and(6) reducing the nitrated substance to an amine.

Abstract: The oxidation promoting harmful effects of the presence of an alkaline catalyst in a polyoxyalkylene can be eliminated and the product made more resistant to oxidation especially at elevated temperatures by the incorporation therein of soluble salts of certain benzoic acid derivatives. The soluble salts can be formed by reaction with the alkali or alkaline earth metal ion derived from the alkaline catalyst utilized in the polymerization of the polyoxyalkylene.

Abstract: The oxidation promoting harmful effects of the presence of an alkaline catalyst in a polyoxyalkylene can be eliminated and the product made more resistant to oxidation especially at elevated temperatures by the incorporation therein of soluble salts of certain benzoic acid derivatives. The soluble salts can be formed by reaction with the alkali or alkaline earth metal ion derived from the alkaline catalyst utilized in the polymerization of the polyoxyalkylene.

Abstract: Diphenyl ethers of the formula ##STR1## where Z.sup.1, Z.sup.2 and Z.sup.3 independently of one another are each hyrogen, halogen, nitro, cyano, carboxyl, alkyl of 1 to 4 carbon atoms, or haloalkyl, alkoxy, haloalkoxy, alkylmercapto, haloalkylmercapto, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl or haloalkylsulfonyl where alkyl is in each case of 1 to 4 carbon atoms, Y is hydrogen, halogen, cyano or nitro and Q is --CO--NA--OR.sup.1, where A is hydrogen, alkyl of 1 to 4 carbon atoms, a metal ion or an unsubstituted or substituted ammonium ion and R.sup.1 is carboxyalkyl, alkoxycarbonylalkyl or carbamylalkyl of not more than 10 carbon atoms, herbicides which contain these diphenyl ethers as active ingredients, and methods of controlling undesirable plant growth using these active ingredients.

Abstract: 2H-1,2,4,6-thiatriazine-1,1-dioxides of the formula I ##STR1## where R.sup.1, R.sup.2 and Hal have the meanings given in the description, are used for controlling undesirable plant growth.