Abstract: A container for tape cassettes is provided with one or more locking elements which comprise one or more ring segments which are roughly adapted to the drive orifice of the cassette. An advantageous embodiment is formed integrally with a web and, preferably, an ejector peg. Overlaps in the edge contour part of a joint and the height of the peg adapted to the internal dimension of the container provide greater stability to lateral compressive forces and forces acting during fall.

Abstract: A method of purifying ferment-produced riboflavin, wherein the impure riboflavin is suspended in water or dilute aqueous acid, and the suspension is heated at a temperature of from 75.degree. to 130.degree. C. for from 0.3 to 3 hours with stirring, during which time crystal transformation takes place, after which the mixture is cooled and the purified product is isolated in known manner.

Abstract: The invention relates to water-thinnable baking paints, the use thereof as filler material and intermediate stone chip resistant coat as well as a process for painting motor vehicle bodies.The water-thinnable baking paints comprise as binders a combination of(I) 20 to 70% by weight of a water-thinnable polyurethane resin with an acid value of 15 to 35,(II) 20 to 70% by weight of an epoxy resin-modified water-thinnable polyester which can be prepared by reacting a polyester (A) with a molecular weight (number average) below 2000, an acid value of 35-240 and a hydroxyl value of 56-320, with 0.3 to 1.

Abstract: The present invention relates to integral skin foams prepared without using halogenated hydrocarbons as blowing agents. The foams of the present invention are prepared using water and volatile silicone fluids as co-blowing agents. Useful silicone agents have boiling points at on below 100.degree. C.

Abstract: Double attachment reactive dyes have the formula ##STR1## where U.sup.1 is C.sub.1 -C.sub.4 -alkyl, phenyl, C.sub.2 -C.sub.10 -alkenyl or the radical ##STR2## where Q.sup.1 and Q.sup.2 are each independently of the other hydrogen or C.sub.1 -C.sub.4 -alkyl and Q.sup.3 is a group which is detachable under alkaline reaction conditions,Z is the radical ##STR3## where each Q.sup.4 is independently of the other hydrogen or C.sub.1 -C.sub.4 -alkyl which may be substituted by cyano, U.sup.2 is C.sub.1 -C.sub.4 -alkyl, phenyl, C.sub.2 -C.sub.10 -alkenyl or the radical ##STR4## where Q.sup.5 and Q.sup.6 are each independently of the other hydrogen or C.sub.1 -C.sub.4 -alkyl and Q.sup.7 is a group which is detachable under alkaline reaction conditions, and w is 0, 1 or 2,t is 0, 1 or 2,v is 1 or 2 and X and L are each as defined in the description, with the proviso that at least one of the two radicals U.sup.1 and U.sup.2 is not C.sub.1 -C.sub.

Abstract: The invention is directed to a process for preparing 3,7-dialkylxanthines of the formula I ##STR1## (R.sup.1 and R.sup.2 denote C.sub.1 -C.sub.4 -alkyl) by the reaction of 4-amino-imidazolecarboxamide-(5) of the formula II ##STR2## with an alkali cyanate in aqueous solution at a pH of from 3 to 5 followed by cyclization of the resulting urea derivative at a pH of from 8 to 14.

Abstract: Anthraquinone dyes I ##STR1## (Ar = aryl, A = anthraquinonyl) are prepared by reacting a aryldihalotriazine II ##STR2## (Hal = chlorine or bromine) with an aminoanthraquinone IIIA--NH.sub.2in an N--C.sub.1 --C.sub.4 -alkylpyrrolid-2-one or -piperid-2-one, N-di-C.sub.1 -C.sub.4 -alkylacetamide or -propionamide or urea derivatives of the formula IV ##STR3## (R = identical or different alkyl groups of from 1 to 4 carbon atoms which can also be linked together to form a 5- or 6-membered ring containing the urea group) as solvent.

Abstract: Abstract of the Disclosure: Magnetic recording media comprise a nonmagnetic substrate and a magnetizable layer arranged thereon and essentially consisting of a magnetic material from the group consisting of the cobalt-modified iron oxides and of the hexagonal ferrites and inorganic fillers finely dispersed in organic binders, the inorganic filler used being ferromagnetic chromium dioxide.

Abstract: A process for working up mother liquors resulting from the preparation of adipic acid by oxidation of cyclohexanol or cyclohexanone or mixtures thereof with nitric acid entails removal of nitric acid by azeotropic distillation with water, heating the resulting melt at from 130.degree. to 180.degree. C. and then dissolving it in water, treating the aqueous solution with cation exchangers, subsequently again evaporating off the water and heating the resulting dicarboxylic acid melt at from 200.degree. to 240.degree. C. and then obtaining a mixture of dicarboxylic acids by distillation.

Abstract: A process for preparing indolenines of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are independently of one another hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.2 -C.sub.20 -alkenyl, C.sub.3 -C.sub.8 -cycloalkyl, aryl, C.sub.7 -C.sub.20 -alkylphenyl, C.sub.7 -C.sub.20 -phenalkyl, or R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3 together are an unsubstituted or C.sub.1 -C.sub.12 -alkyl-substituted C.sub.3 -C.sub.8 -alkylene chain,X and Y are independently of one another hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, C.sub.2 -C.sub.8 -alkoxyalkyl, C.sub.2 -C.sub.8 -alkoxycarbonyl, C.sub.1 -C.sub.4 -alkylsulfonyl, halogen, nitro or cyano,by reacting a 4-methylene-1,3-dioxolan-2-one of the formula II ##STR2## where R.sup.1, R.sup.2 and R.sup.3 are each as defined above, with an aniline of the formula III ##STR3## where X and Y are each as defined above, in the presence of a Lewis acid and in the presence or absence of a halide of main group 1 or 2 of the Periodic Table at from 100.degree.

Abstract: Homopolymerization and copolymerization of ethene is carried out using a Ziegler catalyst system consisting of (1) a transition metal catalyst component, (2) an organoaluminum catalyst component and (3) an organohalogen catalyst component. The component (1) used is the solid-phase product (VI) which has been obtained by a method in which (1.1) first (1.1.1) an inorganic oxidic substance (I) as a carrier and (1.1.2) a solution (II) of (IIa) a certain oxahydrocarbon and (IIb) a mixture of (IIb1) a vanadium trichloride/alcohol complex and (IIb2) a titanium trihalide or titanium trihalide/alcohol complex and (IIc) a silicon or boron compound are combined with formation of a suspension (III) and the latter is evaporated to form a solid-phase intermediate (IV) and (1.2) then (1.2.1) the intermediate (IV) obtained in (1.1) and (1.2.

Abstract: Lower polyhydric alcohols are prepared by catalytic hydrogenolysis of sucrose in an aqueous solution by using a catalyst whose active material essentially consists offrom 0 to 100% by weight of cobalt,from 0 to 85% by weight of copper andfrom 0 to 80% by weight of manganese,the percentages being based on the content of the metals.

Abstract: Novel copolymers of ethylene with .omega.-alkyl-, -cycloalkyl- or -aryl-poly-(alkylene oxide)-.alpha.-yl (meth)acrylates and, if required, .alpha.,.beta.-ethylenically unsaturated carboxylic acids, carboxamides or carboxylic anhydrides and, if desired, further monomers which are copolymerizable with ethylene, selected from the classes consisting of the vinyl esters, vinyl ethers and/or (meth)acrylates.

Abstract: A process for preparing canthaxanthin (Ia) and astaxanthin (Ib) of the formula I ##STR1##where R is H (a) or OH (b), comprises reacting a tertiary alcohol of the formula II ##STR2##where R is H (a) or OH (b), with trifluoroacetic acid, reacting the resulting novel trifluoroacetate of the formula III ##STR3##with triphenylphosphine, and reacting the resulting novel triphenylphosphonium trifluoroacetate of the formula IV ##STR4##with 2,7-dimethyl-2,4,6-octatriene-1,8-dial under the conditions of a Wittig synthesis. The present invention also relates to the novel trifluoroacetates of the formula III and the corresponding triphenylphosphonium trifluoroacetates of the formula IV.

Abstract: In foams having a density of from 0.01 to 0.2 g/cm.sup.3 and a cell count of from 2 to 1,000 cells/mm.sup.2 and based on an impact copolymer, the impact copolymer consists ofa) from 1 to 55% by weight of a block copolymer ofa.sub.1) from 35 to 65% by weight of ethylene anda.sub.2) from 35 to 65% by weight of propylene andb) from 45 to 99% by weight of a random copolymer ofb.sub.1) from 0.5 to 6% by weight of ethylene and from 94 to 99.5% by weight of propylene, or ofb.sub.2) from 0.5 to 12% by weight of but-1-ene and 88 to 99.5% by weight of propylene.

Abstract: (2R)-1-(Aryloxy)-3-(butyryloxy)-2-propanols of the general formula (I), ##STR1## where Ar is a monocyclic or polycyclic aromatic or heteroaromatic radical, and a process for their preparation by the reaction of (2R)-glycidyl butyrate with an aromatic hydroxy compound Ar--OH in the presence of a quaternary ammonium halide.

Abstract: Water-soluble or water-dispersible grafts of proteins with monoethylenically unsaturated monomers are used as sizing agents for staple fiber and filament yarns.

Abstract: 1-Aryl- and 1-hetarylimidazolecarboxylic esters of the general formulae Ia and Ib ##STR1## where R.sup.1 is halogen or substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl;R.sup.2 is substituted or unsubstituted C.sub.1 -C.sub.6 -alkyl; C.sub.3 -C.sub.6 -alkenyl, C.sub.3 -C.sub.6 -alkynyl or C.sub.3 -C.sub.6 -cycloalkyl;R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkyl;R.sup.4 is substituted or unsubstituted phenyl or 5- or 6-membered heteroaromatic,processes for their manufacture, and agents containing them.

Abstract: A perfluorinated sulfonamide surfactant is provided which reduces polyurethane foam shrinkage upon demolding. The surfactant is particularly useful to reduce shrinkage of water-blown flexible polyurethane foams without the need for mechanical crushing.

Abstract: A multilobal synthetic polymeric filament has a single approximately axially extending central void. The total cross-sectional void area of the filament is between about 3 and about 10 percent void.