Abstract: A rotating riffler for the purpose of withdrawing smaller laboratory-sized representative particulate samples from larger samples. This comprises a rotating disk having an interchangeable top plate of plastic foam having openings therein to accommodate sample containers. Where different size sample containers are employed, the plastic foam plate is changed to accommodate them. The rotating disk is mounted on a base containing a variable speed drive and is supported at the periphery by bearings rather than by the shaft. A slurry or dry volume of particles of which a smaller representative sample is required, is fed into a funnel-like device, then drops in a controlled flow into the sampling containers rotating below the funnel. "V"-shaped bridging devices having curved legs are attached between each pair of containers to prevent spilling.

Abstract: Manufacture of 4-substituted oxazolinone-(5) compounds, which are intermediates for substituted aminoacids, by alkylation of 2-substituted or 3,4-disubstituted oxazolinone-(5) compounds in an aprotic solvent in the presence of a tertiary amine.

Abstract: Anti-static polymeric films, fibers and textile yarn produced by process comprising admixing a branched chain, sulfur-containing polyester with a synthetic film- or fiber-forming polymer, extruding said film or textile fiber, and exposing said film or textile fiber to an aqueous solution containing a polyvalent metal ion reactive with the sulfate groups present in said sulfur-containing polyester. The sulfur-containing polyester is thereby fixed within the synthetic film or fiber and is resistant to extraction by water or commonly used dry cleaning solvents.

Abstract: Agents for regulating plant growth containing a triazolyl glycol ether of the formula ##STR1## where R denotes alkyl, cycloalkyl, alkenyl or alkynyl which are unsubstituted or substituted by from 1 to 3 halogen atoms, X denotes hydrogen, halogen or phenyl, and n denotes one of the integers 1, 2 and 3, or a salt thereof, a process for the manufacture of such agents, and their use.

Abstract: The present invention relates to acetanilides, processes for the manufacture of these acetanilides, herbicides containing these compounds, and processes for combating the growth of unwanted plants with these compounds.

Abstract: Curable coating agents, a process for the production of scratch-resistant coatings on plastics, and articles coated by this process.The coating agents are polycondensates ofa reaction product, containing two or more carbon-carbon double bonds and one or more hydroxyl or alkoxy groups per molecule, obtained from an olefinically unsaturated silane containing 2 or more hydroxyl or alkoxy groups, whose olefinically unsaturated organic radical is bonded via a C-Si bond, and a hydroxyl-containing .alpha., .beta.-olefinically unsaturated monomer,an olefinically unsaturated silane of the general formulaR.sup.1 --Si(OR.sup.2).sub.3where R.sup.1 is a vinyl radical or an alkyl acrylate or alkyl methacrylate radical bonded to the Si atom via a C--Si bond and R.sup.2 is hydrogen or a saturated hydrocarbon radical, anda saturated silane of the general formula ##STR1## where R.sup.3 and R.sup.

Abstract: 5,6-Dihydro-11-alkylene-morphanthridin-6-ones and processes for their preparation. The compounds are valuable intermediates for chemical syntheses, especially of drugs.

Abstract: An aqueous solution containing from 0.81 to 1.3 moles of piperazine per liter is used as a washing agent for removing impurities such as H.sub.2 S, CO.sub.2 and COS from gases. Piperazine can also be used, in amounts of up to 0.8 mole per liter, together with physical or chemical solvents, to accelerate the absorption of H.sub.2 S, CO.sub.2 and COS. The washing process is used for natural gases, coke-oven gases, gases from the gasification of coal and synthesis gases, of any origin.

Abstract: The invention relates to novel 1,4-cycloalkano-oxazepines of the general formula ##STR1## where R.sup.1 is hydrogen, hydroxyl or alkoxy or acyloxy of 1 to 4 carbon atoms, R.sup.2 is a hydrocarbon radical of 1 to 3 carbon atoms, n is 1, 2 or 3 and x is 0 or 1, and of its salts with physiologically acceptable acids; processes for their preparation, and their use in therapy.The novel substances are suitable for the pharmacotherapy of pains of various origins.

Abstract: Surface-coating binders based on a copolymer which contains carboxyl groups, blocked isocyanate groups, hydroxyl groups and ether groups, and which, due to partial or complete salification with ammonia or with an organic base, is water-soluble or water-dispersible.This copolymer contains, as copolymerized units, one or more .alpha.,.beta.-olefinically unsaturated carboxylic acids of 3 to 5 carbon atoms or one or more half-esters of an .alpha.,.beta.-olefinically unsaturated dicarboxylic acid of 3 to 5 carbon atoms, an N-(1-alkenyl) isocyanate blocked with a CH--, OH-- or NH-acidic blocking agent, an adduct of an epoxy resin, based on bisphenol A and epichlorohydrin and having a molecular weight of from 380 to 3,500, with an olefinically unsaturated alcohol of 3 to 20 carbon atoms, and one or more other copolymerizable olefinically unsaturated compounds, and has a mean molecular weight of from 1,000 to 20,000 and an acid number of from 35 to 150 mg of KOH/g.

Abstract: Methyl methacrylate is prepared by reacting methyl propionate and methanol at 200.degree.-550.degree. C. over a catalyst mixture which has a condensing action and is capable of dehydrogenating methanol to formaldehyde.

Abstract: The invention concerns polyadducts and their use.The polyadducts, possessing nitrogen-basic groups, have a mean molecular weight of from 500 to 10,000 and contain groups, attached to aromatic rings, of the general formula (I) ##STR1## where R.sup.1 and R.sup.2 are identical or different and each is hydrogen or methyl.In particular, these polyadducts are used, after protonizing with an acid, as binders for the cathodic electrocoating of metal articles.

Abstract: A process for the preparation of an electrically conductive polyene, wherein a polyene which contains one or more chain members of the formula where R is hydrogen or methyl, and which contains a total of not less than seven aliphatic double bonds, is treated, in the absence of moisture and of oxygen, with a strong Lewis acid having a pk.sub.a of from -10 to +4, or with an alkali metal.

Abstract: Storage-stable, pourable and pumpable silicate suspensions are prepared by wet milling of aluminosilicates, after the preparation of the latter, without intermediate drying.

Abstract: A process for the preparation of a mixture of linear three-block copolymers which contain from 70 to 80% by weight of styrene units and from 20 to 30% by weight of elastomeric polymer segments based on a conjugated diene, in a total of three stages, specific conditions in respect of the initiator and of the monomers to be polymerized being essential in the individual stages in order to ensure the polymodal structure of the three-block copolymers. After complete reaction of the monomers, the mixture of the living polymers is treated with proton-active compounds, and the mixture of the block copolymers is isolated by removing the solvent. The compositions obtained by the novel process are transparent and clear and have good mechanical properties. They are furthermore readily processable by the methods conventionally used for thermoplastics. The compositions are particularly suitable for the production of moldings and of packaging materials.

Abstract: A process for the preparation of 6-membered cyclic acetals of trans-4-chloro-3-methyl-but-2-en-1-al by reacting the corresponding acetals of 3-methyl-but-2-en-1-al (prenal), in a halohydrocarbon, with sulfuryl chloride and for their subsequent oxidation to trans-3-methyl-but-2-ene-1,4-dial-1-monoacetals (3-methyl-fumarodialdehyde-1-monoacetals). The trans-3-methyl-but-2-ene-1,4-dial-1-monoacetals are of great importance in terpene syntheses, since they make it possible to carry out successive Wittig reactions giving a very large number of compounds of biological and pharmacological importance.

Abstract: Novel carbamates derived from substituted cyclic .beta.-keto-alcohols, their preparation, and pharmaceutical formulations which contain these compounds and which may be used as hypnotics in the treatment of sleep disturbance and as sedatives.

Abstract: 4-.alpha.-Amino-arylmethyl-6-methyl-1,3-dihydro-furo[3,4-c]pyridin-7-ols of the formula ##STR1## where R.sup.1 and R.sup.2 together are alkylene which may be interrupted by a hetero-atom and may be substituted by C.sub.1-4 -alkyl, andR.sup.3 and R.sup.4 are hydrogen, hydroxyl, C.sub.1-3 -alkyl, C.sub.1-3 -alkoxy or halogen,processes for their preparation, and their use for the preparation of pyridinyl aminoalkyl ethers.

Abstract: A process for the manufacture of a resilient foam based on a melamine-formaldehyde condensate, wherein an aqueous or alcoholic solution or dispersion containing a melamine-formaldehyde precondensate, an emulsifier, a blowing agent and a hardener is foamed by ultra-high-frequency irradiation and the foam is hardened by crosslinking the precondensate. The foam may be employed for heat and sound insulation, and as a packaging material.

Abstract: Rigid, solid, non-cellular, urethane polymer compositions can be prepared which are the reaction product of at least one polyhydric alcohol with at least one organic polyisocyanate in the presence of a low molecular weight urethane modifier adduct which is the reaction product prepared, for instance, by reacting (1) at least one polyisocyanate and at least one monohydric alcohol or (2) at least one monofunctional isocyanate with at least one monohydric or polyhydric alcohol. Said adduct can also consist of mixtures of (1) and (2). Such polymers when prepared in the presence of any catalyst for urethane formation which is a liquid or solid at ambient temperature, set quickly to solid, rigid polymers having a density of at least one gram per cubic centimeter. They can be demolded after combining the materials, without the addition of heat from an external source, within a period of less than one minute to about 15 minutes.