Abstract: Disk-shaped magnetic recording media essentially consisting of a flexible substrate, a thin ferromagnetic metal film applied to one or both sides and a protective or antifriction layer present on this metal film and essentially consisting of carbon, a process for the production of these recording media and information stores containing these recording media.

Abstract: Moldings, in particular foams and fibers, based on melamine/formaldehyde condensation products, in which from 0.1 to 70 mol% of the melamine have been replaced by melamine substituted by from 1 to 3 hydroxyoxaalkyl groups of the formula--(CH.sub.2 --CH.sub.2 --O).sub.n --CH.sub.2 --CH.sub.2 --OH (n=1-5)have increased elasticity.

Abstract: A positive-working, radiation-sensitive mixture and a process for the production of relief images.The radiation-sensitive mixture contains(a) a water-insoluble polymeric binder which is soluble or at least dispersible in aqueous alkaline solutions and(b) an organic compound whose solubility in an aqueous alkaline developer is increased by the action of an acid and which contains one or more acid-cleavable groups and in addition a further group which produces a strong acid on exposure to radiation, the polymeric binder (a) consisting a mixture of a phenolic polymer and a resin of the novolak type.The novel mixture is particularly suitable for the production of photoresists.

Abstract: A process for the preparation of bis(4-chlorophenyl) sulfone, wherein sulfur trioxide, dimethyl sulfate and chlorobenzene are reacted with each in a single reaction at a temperature of from 50.degree. to 100.degree. C.

Abstract: 2-Methyl- and 2-hydroxymethyl-serine-N,N-diacetic acid and derivatives thereof of the general formula I ##STR1## in which X denotes hydrogen, alkali metal or ammonium which may or may not be substituted by C.sub.1 -C.sub.4 -hydroxyalkyl groups and Z denotes hydrogen or hydroxyl.The compounds I serve as complexing agents for heavy metal ions or alkaline earth metal ions and as bleach stabilizers or builders in detergents and cleaning formulations.

Abstract: Silicon-containing polymers consist ofa) from 65 to 99.95 parts by weight of one or more acrylates and/or methacrylates of an aliphatic alcohol of 1 to 12 carbon atoms (monomers A),b) from 0 to 30 parts by weight of one or more ethylenically unsaturated monomers capable of undergoing free radical copolymerization (monomers B),c) from 0.05 to 10 parts by weight of one or more anhydrides of an .alpha.,.beta.-monoethylenically unsaturated dicarboxylic acid of 4 to 10 carbon atoms (monomers C) or from 0.1 to 10 parts by weight of one or more monomers containing one or more isocyanate groups and capable of undergoing free radical copolymerization (monomers D) andd) effective amounts of one or more silanes of the general formula INH.sub.2 --R.sup.1 --Si(R.sup.2).sub.3-m (R.sup.3).sub.m (I)where m is 0, 1 or 2, R.sup.1 is a hydrocarbon chain of not more than 10 carbon atoms which may be interrupted by oxygen or nitrogen, the radicals R.sup.2 are identical or different hydrolyzable groups and the radicals R.sup.

Abstract: Solid pigment formulations containing from 70 to 97% by weight, based on the total weight of the formulation, of one or more pigments and also from 3 to 30% by weight, based on the total weight of the formulation, of at least one surfactant which is an adduct of ethylene oxide and optionally propylene oxide with ethylenediamine, the proportion of ethylene oxide being from 46 to 100% by weight, based on the total weight of ethylene oxide and propylene oxide in the adduct, and the adduct having an average molecular weight of from 5000 to 40,000, are useful for pigmenting printing ink and gloss paint compositions.

Abstract: Magnetic recording media consist of a nonmagnetic substrate and at least one magnetizable layer which is firmly applied thereon and is based on a polyurethane binder which may be crosslinked with polyisocyanate, not less than 50% by weight of the binder consisting of a low molecular weight branched polyureaurethane having OH-containing urea groups at the chain ends, and the sliding properties of the said binder being improved and its coefficient of friction reduced by incorporation of siloxane groups.

Abstract: Cyclopropanecarboxamides of the general formula I ##STR1## wherein R.sup.1 is hydrogen, halogen or low-molecular-weight alkyl, R.sup.2 and R.sup.3 are hydrogen or low-molecular-weight alkyl, R.sup.4 to R.sup.8 are each hydrogen, halogen or low-molecular-weight alkyl, A is substituted or unsubstituted hetaryl with 1, 2 or 3 nitrogen atoms and six ring members, n is 0 or 1, methods for their manufacture, and their use for combating pests.

Abstract: A process for converting a continuous multifilamentary yarn into a staple-like yarn involves continuously conveying continuous multifilamentary yarn onto a rotatable wheel having a peripheral yarn receiving groove and at least one radially disposed needle within the wheel and in registry with the groove. The needles are in various stages of retraction and extension depending upon the relative rotational position of the wheel. By laterally contacting the multifilamentary yarn in the groove, the barbs of the needles catch and break a fraction of the filemants from the side of the yarn so that the yarn is not forced upward out of its grooved path.

Abstract: Magnetic recording media are produced by preparing a dispersion of anisotropic magnetic materials in solution in an organic binder using dispersants and further conventional additives, applying the dispersion in the form of a layer onto a nonmagnetic substrate and solidifying the applied magnetic layer, by a process in which a cylindrical grinding chamber is used which is provided with an anchor stirrer or helical stirrer and contains grinding media whose specific gravity is lower than that of the magnetic material.

Abstract: 1-Amino-2-bromo-4-hydroxy-anthraquinone (I) ##STR1## is prepared by brominating 1-amino-4-hydroxyanthraquinone (II) ##STR2## in an inert aprotic organic liquid.

Abstract: Stilbene compounds of the general formula Ia, Ib or IcR.sup.1 R.sup.2 R.sup.3 Ar.sup.1 --CH.dbd.CH--Ar.sup.3 R.sup.4 R.sup.5 R.sup.6 (Ia)R.sup.1 R.sup.2 R.sup.3 Ar.sup.1 --CH.dbd.CH--Ar.sup.2 R.sup.4 R.sup.5 R.sup.6 --CH.dbd.CH--Ar.sup.3 R.sup.7 R.sup.8 R.sup.9 (Ib)R.sup.1 R.sup.2 R.sup.3 Ar.sup.1 --CH.dbd.CH--Ar.sup.2 (CH.sub.2).sub.n Ar.sup.3 --CH.dbd.CH--Ar.sup.4 R.sup.4 R.sup.5 R.sup.6 (Ic)where Ar.sup.1 to Ar.sup.4 are identical or different aromatic or quasi-aromatic radicals and n is from 0 to 20 and where either at least one of the radicals R.sup.1 to R.sup.6 or R.sup.9 is hydrocarbon-solubilizing alkyl, alkoxy, dialkylamino or diarylamino of 4 or more carbon atoms in the alkyl moiety or, if formula Ic contains no radicals R.sup.1 to R.sup.6, n is not less than 4, are prepared by metalating a toluene/xylene analog R.sup.1 R.sup.2 R.sup.3 ArCH.sub.3 or H.sub.3 CR.sup.4 R.sup.5 R.sup.6 ArCH.sub.

Abstract: Muscone of the formula I ##STR1## is prepared by a process in which an open-chain 2,15-diketone of the general formula IICH.sub.3 --CO--X--CO--CH.sub.3 (II)where X is one of the radicals--(--CH.sub.2 --).sub.12 -- (a)--CH.dbd.CH--(--CH.sub.2 --).sub.8 --CH.dbd.CH-- (b)--CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.6 --CH.dbd.CH--CH.sub.2 --(c)--CH.sub.2 --CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.4 --CH.dbd.CH--CH.sub.2 --CH.sub.2 -- (d) or--CH.sub.2 --CH.sub.2 CH.sub.2 --CH.dbd.CH--(--CH.sub.2 --).sub.2 --CH.dbd.CH--CH.sub.2 --CH.sub.2 --CH.sub.2 -- (e)is brought into contact, at from 300.degree. to 400.degree. C. in the presence of from 5 to 15% by weight, based on the amount of catalyst, of water, in the gas phase, with a fixed-bed catalyst containing TiO.sub.2, CeO.sub.2 or the ThO.sub.2 as the catalytically active compound and the unsaturated cyclic ketone formed by intramolecular aldol condensation is subjected to catalytic hydrogenation.

Abstract: The preparation of 2,3-dialkoxypropanals of the general formula I ##STR1## in which R.sup.1 and R.sup.2 denote C.sub.1 -C.sub.8 -alkyl or C.sub.5 - or C.sub.6 -cycloalkyl which may or may not bear substituents which are inert under the conditions of the reaction, wherein a 1,2-dialkoxy ethene of the general formula IIR.sup.1 O--HC.dbd.CH--OR.sup.2 (II)is reacted with carbon monoxide and hydrogen in the presence of a rhodium-containing catalyst.

Abstract: 1-Bromo-3-chloro-1,2-diaryl-2-propanols of the general formula I ##STR1## where n and m are each 1, 2 or 3, and R.sup.1 and R.sup.2 are each hydrogen, haloalkyl, alkoxy, haloalkoxy, t-butyl or an aromatic radical which may be substituted, are prepared and converted into azolylmethyloxiranes.

Abstract: Pyridines of the formula ##STR1## where the individual radicals R.sup.1 may be identical or different and are each hydrogen or an aliphatic radical are prepared by reactinga) a 2-alkoxy-2,3-dihydro-4H-pyran of the formula ##STR2## or b) a glutaraldehyde of the formula ##STR3## where R.sup.1 has the abovementioned meansings and R.sup.2 is an aliphatic radical, with ammonia in the presence of an acidic, solid catalyst.

Abstract: Isoxazole(isothiazole)-5-carboxamides of the formula ##STR1## where X is oxygen or sulfur,R.sup.1 is hydrogen, substituted or unsubstituted alkyl, alkoxy, substituted or unsubstituted cycloalkyl, a 5- or 6-membered heterocyclic radical having one or two heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen, and which may be substituted, or substituted or unsubstituted phenyl, orR.sup.2 is formyl, 4,5-dihydrooxazol-2-yl or a radical of the formula COYR.sup.5 or CONR.sup.6 R.sup.7, whereY is oxygen or sulfur,R.sup.5 ishydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, haloalkenyl, substituted or unsubstituted alkynyl,cycloalkyl,cycloalkenyl,substituted or unsubstituted phenyl,a 5- or 6-membered heterocyclic radical having one or two heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen,cycloalkanimino, phthalimido, succinimido, or a radical ##STR2## R.sup.3 and R.sup.

Abstract: Ziegler-Natta-type catalyst systems contain as active constituentsa) atitanium-containing solid component which contains titanium, magnesium, halogen and a norbornadienedicarboxylate of the formula I ##STR1## as electron donor, where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.8 -alkyl or 5- to 7-membered cycloalkyl which in turn can carry C.sub.1 -C.sub.10 -alkyl groups,b) an aluminum component andc) another electron donor component,and are particularly suitable for preparing polypropylene and copolymers of propylene with minor amounts of other .alpha.-olefins with 2 to 8 carbon atoms.

Abstract: Aqueous synthetic resin dispersions are obtainable by combining an aqueous starting dispersion of a polymer A, which has a glass transition temperature of from -50.degree. to +60.degree. C. and is composed of monoethtylenically unsaturated monomers which, apart from carboxyl groups and their derivatives, carry no further groups which are polymerizable or condensable with one another, with or without butadiene, and an aqueous solution of a polymer B, which is essentially composed of N-hydroxycarboxymethylamides of acrylic and/or methacrylic acid and/or water-soluble salts of these N-hydroxycarboxymethylamides, at the beginning, in the course of, and/or after completion of, the preparation of the aqueous starting dispersion, with the proviso that the solids content of polymer B is from 0.5 to 10% by weight, based on the total amount of polymer A and polymer B.