Abstract: Magnetic recording media which have a thin backing coating and consist of a non-magnetic flexible base and a magnetic layer which is applied to one side of the base and comprises magnetic material finely dispersed in an organic binder are produced by applying a dispersion of finely divided non-magnetizable conductive and non-conductive solids and conventional additives in a solution of a polymeric binder in an organic solvent to that side of the base which is opposite the magnetic layer by means of a knife-coater, and then drying the layer, a high molecular weight organic compound which acts as a thickener being added to the backing coating dispersion.

Abstract: A pressurized composition in an aerosol container and adapted to form a spray upon release of pressure therefrom which composition is a liquid inside the container and forms a gel on contact with living tissue comprising water, propellant, volatile solvent and a polyoxyethylene-polyoxypropylene copolymer. The preferred composition may also advantageously include a skin treating agent, and conventional skin treatment additives.

Abstract: In batteries or electrochemical stores, in particular secondary cells, the active material of the cathode and/or the anode consists of one or more electrically conductive polymers which have an electrical conductivity greater than 10.sup.-2 Ohm.sup.-1 cm.sup.-1 and contain electrochemically oxidizable and/or reducible redox groups which have a defined structure and are capable of forming two or more stable oxidation states which preferably are reversibly interconvertible.

Abstract: An apparatus for the preparation of bonding fibers, especially for the production of nonwovens by a wet-lay process, wherein a polymer dispersion, containing an anionic or nonionic dispersant, and an aqueous solution, containing a dissolved cationic precipitant, are combined to cause fiber formation from precipitated polymer particles, which apparatus includes a feed funnel spaced above the bottom of a homogenization vessel with both a nozzle for introducing the polymer dispersion and a metering device for the precipitant, which are so arranged and aimed into the funnel that in co-operation with a stirrer a vortex is produced in a column of liquid in the feed funnel, and fibers are formed and broken up while passing through a turbulence chamber, located at the bottom of the funnel, and a gap into a homogenization chamber.

Abstract: Aqueous treating media are applied onto running webs via a restrictor gap in a hollow body extending over the whole width of the web. A springy strip of material, which regulates and homogenizes the throughput, is clamped, under the force from a spring, between the components defining the gap.

Abstract: Polyether-ester polyols are prepared by reacting a polyether polyol, tetrahydrophthalic anhydride and an alkylene oxide in the presence of a catalyst selected from the group consisting of calcium naphthenate and cobalt naphthenate. These polyols may be used in preparing polyurethane products.

Abstract: A pressurized composition in an aerosol container and adapted to form a spray upon release of pressure therefrom which composition is a liquid inside the container and forms a gel on contact with living tissue comprising water, propellant and a polyoxyethylene-polyoxypropylene copolymer. The preferred composition may advantageously include a skin treating agent, and conventional adjuvants.

Abstract: A process for consolidating the surface of a granular adsorbent, wherein thermoplastic crosslinkable bonding fibers are applied from aqueous suspension, the water taken up by the adsorbent is evaporated off and the bonding fibers adhering to the surface of the adsorbent are crosslinked by heating. The adsorbent thus treated has virtually the same adsorption and desorption properties as the untreated adsorbent, but exhibits substantially improved abrasion resistance.

Abstract: Electrophotographic recording materials which comprise an electrically conductive base, charge carrier-producing compounds (sensitizers), and charge carrier-transporting compounds, possess high photoconductivity and low conductivity in the dark, and contain, as charge carrier-transporting compounds, 2-substituted benzotriazoles of the formula ##STR1## are used for reprographic purposes and for the production of electrophotographic printing plates, in particular offset printing plates.

Abstract: Olefinically unsaturated compounds are continuously hydroformylated under from 2 to 30 bar and at from 80.degree. to 130.degree. C. using, as a catalyst, a rhodium complex which contains, as ligands, sparingly volatile compounds of the general formula I ##STR1## where A is phosphorus, arsenic, antimony or bismuth and R.sup.1, R.sup.2 and R.sup.3 are each organic radicals, by a method in which the hydroformylation mixture consisting of liquid and gaseous components is removed from the reactor and is subjected to relatively high temperatures and/or relatively low pressures for a short time in a devolatilization column, the mixture at the same time being separated into a gas phase and a liquid phase, the gas phase is separated into the product and the recycle gas in a separator, and the recycle gas and the liquid phase from the devolatilization column are recycled to the reactor.

Abstract: The subject invention relates to a vitamin C powder prepared by (a) spray drying an aqueous slurry of ascorbic acid and binder in the presence of an absorbent in amounts such that the resulting powder will contain at least 90 percent by weight of ascorbic acid, no more than 9 percent by weight of binder, from 0.2 to 2 percent by weight of absorbent; and blending from 0.2 to 5 percent by weight of a lubricant into the powder prepared by step (a). Preferably microcrystalline cellulose and mixtures of microcrystalline cellulose and hydroxypropylmethycellulose are used as the binder.The resulting sugar and starch free vitamin C powder prepared by this process will be free flowing, have an ascorbic acid content of at least 90 percent by weight, be color stable under use conditions, will contain a lubricant, and is directly compressible into tablets which have acceptable hardness, friability, color stability, and disintegration times.

Abstract: 3-Formyl-5,6-dihydro-2H-pyran is prepared by conversion of acrolein in the presence of water, acids and halohydrocarbons of 1 to 6 carbon atoms and 1 to 6 halogen atoms as solvents at from 60.degree. to 150.degree. C. The 3-formyl-5,6-dihydro-2H-pyran obtained by the novel process is a valuable starting material for the preparation of dyes and crop protection agents.

Abstract: Highly electrically conductive copolymers of pyrroles and alkynes and/or aromatics, which possess good mechanical properties coupled with a well-balanced spectrum of properties, are prepared by anodic polymerization of the pyrroles and alkynes and/or aromatics in a polar solvent in the presence of a suitable conductive salt.

Abstract: A process for the production of coatings based on reaction products of (A) polyhydroxy polyacrylate resins obtained from hydroxyalkyl esters of acrylic acid and/or methacrylic acid, alkyl acrylates and/or methacrylates, one or more polymerizable, olefinically unsaturated N-containing heterocyclic compounds and if appropriate vinyl-aromatics, acrylamides or methacrylamides and other monomers with (B) isocyanurate-containing polyisocyanates having a functionality of from 2.5 to 6 and predominantly containing cycloaliphatically bonded isocyanate groups is particularly useful for coating metal articles.

Abstract: 3-Cyanoaldehydes of the formula I ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.6 -alkyl and R.sup.3 is hydrogen or C.sub.1 -C.sub.3 -alkyl, are prepared by a process wherein an aldehyde of the formula II ##STR2## is reacted with anhydrous hydrocyanic acid in the presence of a basic catalyst, in a solvent.

Abstract: Physiologically unacceptable solvents are removed from polymers containing carboxyl or anhydride groups by a process in which the polymer is treated with aliphatic hydrocarbons at a temperature which is no lower than the lower limit of the softening range of the polymer.

Abstract: Vitamin A palmitate compositions stable against crystallization at low temperatures are prepared by blending therewith a monoterpene such as dl-limonene. Vitamin A active concentrates prepared utilizing low temperature stabilized vitamin A palmitate are prepared by blending therewith an acceptable feed or food grade emulsifier.

Abstract: .alpha.-Neopentyl-phenethyltriazoles of the formula I ##STR1## where R.sup.1, m and A have the meanings given in the description, processes for their preparation, and their use for controlling fungi.

Abstract: A tape cassette, particularly a magnetic tape cassette, has two or more windows which are separated from one another by a separator housing member and which are located on a common carrier which may consist, for example, of connecting webs between the windows. The window arrangement is useful in standardized cassettes, for example compact cassettes, as well as in all other film, sound, video and data cassettes.

Abstract: A process for the pyrolysis of mono-, di-, and polyurethanes to the corresponding mono-, di-, and polyisocyanates wherein the urethane to be cleaved is heated under pressure and sprayed through a nozzle into a pyrolysis chamber maintained at reduced pressure. The isocyanate and alcohol cleavage products are separated by fractional condensation.