Abstract: Sodium sulfate-containing residues are worked up by reducing the sulfate by a process in which the sulfate or a mixture or solution of the sulfate is thermally cleaved by adding oxygen, air or oxygen-enriched air at above 1000.degree. C., in particular above 1200.degree. C., under reducing conditions to give gaseous sulfides and oxides of sulfur as well as alkaline slag. The sulfur compounds contained in the gaseous reaction products can be further processed to sulfur, sulfur dioxide and sulfuric acid.

Abstract: The invention relates to a continuous process for coating bundles of fibers, particularly carbon fibers, with a layer of silicon--which may be present as the carbide, oxide, nitride, or plasma polymer with carbon and hydrogen or in elementary form--by radio-frequency sputtering. The coated fibers are suitable in particular for the manufacture of reinforced plastics.

Abstract: Press tools are used for processing plastics, in particular fiber-reinforced plastics, to moldings in presses. They essentially consist of a lower part which can be firmly connected to the press frame and an upper part which is movable with respect to the said lower part and can be connected to a frame drive. The upper and lower parts of the tool, together with drive elements for driving together parts which define the mold cavity, form a basic unit. The parts are replaceably held in the basic unit and are guided in the said unit.

Abstract: Tiles are laid using a tile adhesive which is based on a polymer dispersion and conventional additives and contains, as a thickener, a compound of the general formula I ##STR1## where R is a radical of dihydric to hexahydric alcohol of 2 to 10 carbon atoms, which radical is bonded via oxygen, R.sup.1 is alkyl, alkoxymethyl or alkenyloxymethyl or a mixture of these radicals, each having 16 to 30 carbon atoms in the alkyl, alkoxy or alkenyloxy radical, A is --CH.sub.2 CH.sub.2 --O-- (=EO) alone or as a mixture with ##STR2## --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --O--, where A is not less than 50, preferably not less than 70, mol % of --CH.sub.2 CH.sub.2 O--, x is from 12 to 500, y has a mean value (averaged over a large number of molecules) of from 0.3 to 5, preferably from 0.5 to 2, and n is an integer from 2 to 6.

Abstract: Triazole compounds of the formulae Ia and Ib ##STR1## where R.sup.1 is hydrogen or cyclopropyl, or is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl or C.sub.2 -C.sub.4 -alkynyl, each of which is unsubstituted or substituted by methyl, ethyl, ethenyl, ethynyl, hydroxyl, fluorine, chlorine, bromine or C.sub.1 -C.sub.4 -alkoxy, or is C.sub.1 -C.sub.4 -alkoxy, C.sub.2 -C.sub.4 -alkenyloxy or C.sub.2 -C.sub.4 -alkynyloxy,R.sup.2 and R.sup.3 independently of one another are each hydrogen, straight-chain or branched C.sub.1 -C.sub.3 -alkyl, and R.sup.2 and R.sup.3 together may furthermore form a carbocyclic ring which has up to six members in each ring system and may possess bridge members, with the proviso that, in formula Ia, two or more of the radicals R.sup.1 -R.sup.3 are not hydrogen, and is hydrogen, an acyl radical CO-R.sup.5 or a sulfonyl radical SO.sub.2 R.sup.5, R.sup.5 being straight-chain or branched C.sub.1 -C.sub.

Abstract: A catalyst for the copolymerization of ethylene by the gas-phase fluidized-bed method is prepared by a process in which a titanium-containing and magnesium-containing active component, reacted with an alcohol as a complexing agent, is applied to a finely divided silica from homogeneous solution, in the presence of a polysiloxane, by evaporating the solvent, and the resulting homogeneous catalyst intermediate is then preactivated by treatment with the alkylaluminum compound and the Lewis base in an inert hydrocarbon solution, and the copolymers prepared using the above catalyst are employed for the production of films exhibiting little blocking.

Abstract: A yarn comprising polyester fibers having an improved balance of properties (tenacity and boiling water shrinkage) is produced within predetermined limits. The polyester yarn is prepared by cold drawing a partially oriented feeder yarn, partially annealing the drawn yarn, and subsequently annealing the partially annealed cold drawn yarn at controlled tensions.

Abstract: Cyclic N,N'-dimethylureas I ##STR1## where A is a 1,2- or 1,3-alkylene group of 2 to 10 carbon atoms, are prepared by reacting the corresponding non-methylated cyclic urea with formaldehyde and excess formic acid and then removing the formic acid still present in the reaction mixture, by a process in which the formic acid is subjected to a thermal decomposition reaction by means of a catalyst system consisting of a tertiary amine and a copper salt.

Abstract: An aqueous damping solution for the offset printing process contains a hydrolysis product of a compound of the general formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and are each hydrogen, alkyl of 1 to 9 carbon atoms or aryl of 6 to 12 carbon atoms, or a condensate of this hydrolysis product.

Abstract: Multilayer, photosensitive recording materials which can be developed with aqueous media contain one or more layers of a mixture which is crosslinkable by photopolymerization, soluble or dispersible in aqueous media and based on polymer containing hydroxyl and/or amide groups, as binders, compatible photopolymerizable monomers and photopolymerization initiators, which mixture contains from 0.1 to 10% by weight, based on its total amount, of an aldehyde of the general formula I ##STR1## where R is hydrogen, hydroxyl, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryloxy.

Abstract: Flameproofed thermoplastic molding materials contain(A) 40-99% by weight of a partly aromatic amide copolymer consisting essentially of(a.sub.1) 40-50% by weight of units derived from terephthalic acid and hexamethylenediamine,(a.sub.2) 0-50% by weight of units derived from .epsilon.-caprolactam and(a.sub.3) 0-60% by weight of units derived from adipic acid and hexamethylenediamine,components (a.sub.2) and/or (a.sub.3) accounting altogether for not less than 10% by weight of the total number of units,(B) 1-30% by weight of a flameproofing combination of(b.sub.1) 40-97% by weight of red phosphorus,(b.sub.2) 1-50% by weight of an inorganic compound of a divalent or tetravalent metal,(b.sub.3) 1-40% by weight of an organic mono- or dicarboxylic acid and(b.sub.

Abstract: .alpha.-Ketocarboxylic esters ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are identical to or different from one another and are each hydrogen or straight-chain or branched alkyl, alkenyl, hydroxyl, alkoxy cycloalkyl or halogen and R.sup.6 is unbranched lower alkyl, are prepared by reacting glycidic esters of the formula ##STR2## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each as defined above, in the presence of zeolites or phosphates and/or phosphoric acid or boric acid on a carrier material and/or acidic metal oxides as catalysts and are used for preparing phenylacetic esters.

Abstract: Vinyl chloride copolymers of (a) from 60 to 78 parts by weight of vinyl chloride, (b) from 1 to 20 parts by weight of glycidyl methacrylate and (c) from 12 to 40 parts by weight of compounds copolymerizable with (a) and (b) have viscosity values, measured in 20% strength by weight toluene solution at 23.degree. C., of from 10 to 100 mPa.s.

Abstract: Compounds of the formula ##STR1## where R.sup.1 to R.sup.7, m, n and p have the meanings stated in the description, and certain derivatives which are p-substituted in the left-hand phenyl ring, are useful for the treatment of disorders.

Abstract: Thermoplastic molding compositions based on thermoplastic polyesters (a.sub.1), graft polymers incorporating acrylate rubbers as grafting base (a.sub.2) and a two-shell graft sheath, copolymers of aromatic vinyl monomers and acrylonitrile or methacrylonitrile (a.sub.3) and glass fibers (B) have a balanced range of properties.

Abstract: Aqueous dispersions of binders may be used to make a slurry of a ceramic material. The slurry may then be shaped to a green part by conventional techniques such as tape casting. The slurry may be spray dried to give a free flowing powder which may be formed by dry pressing, roll compaction or other similar techniques. The tensile strength of the green part may be increased by subjecting the green part to an energy treatment such as heat or irradiation including ultraviolet (UV), X-rays and electron beams.

Abstract: Cyclohexylamines of the formula ##STR1## where X is a single bond or an alkylene chain, Y is hydrogen or an aryl, cyclohexyl, 4-cyclohexylcyclohexyl, perhydro-1- or 2-naphthyl or piperidyl radical, R.sup.1 and R.sup.2 are hydrogen, alkyl, alkenyl, alkynyl, hydroxyalkyl, cycloalkyl, cycloalkenyl or arylalkyl, or R.sup.1 and R.sup.2 together form an alkylene group and, together with the N atom, form a ring, and acid addition salts thereof, with the exception of compounds in which X is a single bond, Y is cyclohexyl, R.sup.1 and R.sup.2 are hydrogen or methyl, and the compounds in which X is C.sub.6 -, C.sub.7 - and C.sub.8 -alkyl, Y is hydrogen and R.sup.1 and R.sup.2 together with the N atom whose substituents they are form a 2,6-dimethylmorpholine radical, and fungicides containing such cyclohexylamines.

Abstract: Symmetric and asymmetric monoacetals of aromatic 1,2-diketones are prepared by a novel process, in a nonpolar solvent in the presence of a urea derivative as the catalyst.

Abstract: Polytetrahydrofuran vinyl ethers of the general formulaH.sub.2 C.dbd.HC--[)O--CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --].sub.n O--R Iwhere R is hydrogen or the CH.dbd.CH radical and n is from 2 to 150, are prepared by a process in which polytetrahydrofuran of the general formulaH--[O--CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --].sub.n OH IIis reacted with acetylene.

Abstract: Polysulfated heparins are used for the preparation of drugs for the prophylaxis and therapy of diseases caused by retroviruses.