Abstract: In a sheet-like, multilayer, magneto-optical recording material which has a base which is transparent to light, a thermally alterable recording layer of an amorphous lanthanide transition metal alloy and, on the base remote side of this recording layer, an anticorrosion layer containing carbides, nitrides and/or oxides, the anticorrosion layer(a) is from 30 to 250 nm thick and(b) consists of two or more components which(c) are present in four or more separate strata, each consisting of one of the components,(d) one or more of the components being selected from the group consisting of the elements boron, aluminum, silicon, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten and(e) one or more of the other components being selected from the group consisting of the carbides, nitrides and oxides of these elements (d) and(f) directly adjacent strata always consisting of components which differ from one another.

Abstract: Novel Oxo-ionol derivatives are described which have a but-1-en-3-ol carbonate side chain. These derivatives are stable tobacco enhancers which impart a slight hay-like flavor to tobacco smoke.

Abstract: O-acrylaminomethylbenzyl halides (I) ##STR1## in which X is Cl or Br and R.sup.1 is alkyl or aryl, are obtained by reacting an o-aminomethylbenzyl alkyl ether (II) ##STR2## with an acylating agent, and then reacting the resulting acid amide, preferably without intermediate isolation, with an aqueous hydrohalic acid.

Abstract: A process for the preparation of 2,4-dihydroxybenzophenone by reacting resorcinol with benzotrichloride in water, wherein the reaction mixture contains a surfactant or a dispersing or emulsifying agent in a concentration of from 0.05 to 5%, by weight of the water.The product is obtained in high yield and good purity.

Abstract: Hydroxycarboxylic esters of the general formula ##STR1## where n is an integer from 0 to 10, R.sup.1 and R.sup.2 are each hydrogen, hydroxyl, alkoxy or an aliphatic or olefinic, straight-chain, branched or cyclic hydrocarbon radical, and R.sup.1 and R.sup.2 together may furthermore form an alkylene radical, and the hydrocarbon radicals may furthermore be substituted by halogen, hydroxyl, epoxy or nitrile, and R.sup.3 is a low molecular weight alkyl radical, are prepared by electrochemical oxidation of a hydroxyaldehyde of the general formula ##STR2## in the presence of an alcohol of the formula R.sup.3 OH and of an ionic bromide or chloride in an undivided electrolysis cell.

Abstract: Cyclohexanol is removed from aqueous solutions containing it and aromatic sulfonic acids by extraction with one or more cyclohexyl ethers liquid under extraction conditions and having the formula ##STR1## where R is alkyl of from 1 to 16 catbon atoms, cycloalkyl of from 5 to 8 carbon atoms, aralkyl of from 7 to 10 carbon atoms or phenyl, which may additionally have substituents which are inert under reaction conditions.

Abstract: Thermoplastic molding materials containing, as essential components,(A) 5-95% by weight of a partially aromatic copolyamide essentially composed of(A.sub.1) 20-90% 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) 0-80% by weight of units derived from adipic acid and hexamethylenediamine,(B) 5-95% by weight of a polyphenylene ether,(C) 0-45% by weight of a vinylaromatic polymer and(D) 0-40% by weight of a rubber impact-modifier, are prepared.

Abstract: Styrene polymer foam particles of from 10 to 30 kg/m.sup.3 in density are obtained by foaming styrene polymers which, per kg, contain from 0.7 to 3 moles of blowing agent mixture composed of from 60 to 90 mol % of water and from 10 to 40 mol % of the C.sub.4 - or C.sub.5 -hydrocarbon with the aid of microwaves.

Abstract: Azulenesquaric acid dyes of the formula ##STR1## where L is substituted or unsubstituted C.sub.1 -C.sub.12 -alkylene,R.sup.1 is C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl or substituted or unsubstituted phenyl andR.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each independently of the others hydrogen or substituted or unsubstituted C.sub.1 -C.sub.12 -alkyl,with the proviso that when R.sup.5 is hydrogen the positions of the substituents CH.sub.2 --L--O--CO--NHR.sup.1 and R.sup.4 on an azulene ring may also be interchanged within a ring in either or both of the azulene rings, derived from azulene intermediates that contain urethane groups, are suitable for use in an optical recording medium.

Abstract: Phenylacetaldehydes of the general formula I ##STR1## where each of R.sup.1 to R.sup.5 is independently of the others hydrogen, halogen, unsubstituted or halogen-substituted alkyl, alkenyl, alkoxyl, alkylthio or cycloalkyl, are prepared by converting glycidic esters of the general formula II ##STR2## where each of R.sup.1 to R.sup.5 is as defined above and R.sup.6 is tertbutyl or i-propyl, in the presence of zeolites and/or phosphates and/or phosphoric or boric acid on a carrier material and/or acidic metal oxides as catalysts.

Abstract: Expandable styrene polymers formed from 50 to 83% by weight of polystyrene and from 17 to 50% by weight of styrene-soluble styreneacrylonitrile copolymer having a total acrylonitrile content of not less than 5% by weight, containing from 3 to 10% by weight of a C.sub.3 -C.sub.6 -hydrocarbon with or without customary additives, are notable for high oil resistance and can be prepared by suspension polymerization of a solution of the styrene-acrylonitrile copolymer in styrene.

Abstract: Cyclohexanol is removed from aqueous solutions containing it and aromatic sulfonic acid by extraction using as the extractant a mixture of(a) one or more liquid aliphatic, cyloaliphatic or aromatic hydrocarbons, halohydrocarbons or ethers which are inert under extraction conditions and(b) one or more phenols.

Abstract: R.sup.2 is halogen,R.sup.3 is hydrogen, halogen or a C.sub.1 -C.sub.4 -alkyl,R.sup.4, R.sup.5 are hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.2 -C.sub.4 -alkyl which carries a hydroxyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkylthio radical, C.sub.1 -C.sub.6 -alkoxy, C.sub.3 -C.sub.6 -alkenyl, C.sub.3 -C.sub.6 -alkynyl, C.sub.3 -C.sub.6 -alkenyloxy and/or C.sub.3 -C.sub.6 -alkynyloxy, or together with the nitorgen atom form a 5- or 6-membered aliphatic ring in which a methylene group may be replaced by an oxygen atom, andR.sup.6 is hydrogen, C.sub.1 -C.sub.6 -alkyl which is unsubstituted or substituted by one or two C.sub.1 -C.sub.4 -alkoxy groups, or is C.sub.3 -C.sub.6 -alkenyl, C.sub.3 -C.sub.6 -alkynyl or benzyl,processes for their manufacture, and their herbicidal use.

Abstract: Aromatic hydroxycarboxylic acids of the formula(HO--).sub.n A--COOHwhere n is 1 or 2 and A is a radical from the benzene, naphthalene, biphenyl, diphenyl ether, diphenyl sulfide or diphenyl sulfone series, are prepared by a process in which an acylated aromatic compound of the formula(R.sup.1 --CO--O--).sub.n A--CO--R.sup.2where R.sup.1 and R.sup.2 independently of one another are each unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl and n and A each have the abovementioned meanings, is oxidized with oxygen in the presence of a catalyst and of a solvent at from 20.degree. to 250.degree. C. to give a carboxylic acid of the formula(R.sup.1 --CO--O--).sub.n A--COOHwhere R.sup.1, n and A have the abovementioned meanings, and the acyl group or groups is or are then eliminated.

Abstract: Reactive dyes which possess three reactive groups and conform to the formula ##STR1## where R.sup.1 is hydrogen, methyl or ethyl,X is hydrogen or hydroxysulfonyl,Hal is fluorine or chlorine,D is phenylene, carboxyl- hydroxysulfonyl-monosubstituted or -disubstituted phenylene or hydroxysulfonylmonosubstituted or -disubstituted naphthylene, andA is a reactive group which reacts only substitutively with the hydroxyl groups of the cellulose, or A--D together are a benzo-fused reactive group which reacts only substitutively with the hydroxyl groups of the cellulose, are used for dyeing or printing hydroxyl- or nitrogen-containing substrates.

Abstract: The invention relates to a cathodically depositable aqueous electropaints which contain cationic amine-modified epoxy resins and are pigmented, with electroconductive carbon black and which, on deposition and crosslinking, provide electrophoroetically overcoatable coatings and contain as electroconductive carbon black a carbon black having an iodine absorption of 870-930 mg/g, a specific surface area (BET/N.sub.2) of 850-1,000 m.sup.2 /g, a pore volume (DBP) of 330-390 ml/100 g and an average particle size of 25-35 nm in an amount of 1.5 to 5.1% by weight--based on total solids.

Abstract: The invention relates to a soluble, cross-linkable acrylate copolymer which is obtainable by copolymerization of more than 3 to 30% by weight of monomers having at least two polymerizable, olefinically unsaturated double bonds, from 5 to 50% by weight of monomers having a cross-linkable group, with the exception of hydroxyl groups and carboxyl groups, and from 20 to 92% by weight of further monomers having a polymerizable, olefinically unsaturated double bond, the sum of the monomers being 100% by weight. The invention furthermore relates to processes for the preparation of acrylate copolymers and coating agents based on the acrylate copolymers according to the invention.

Abstract: Triazole compounds I ##STR1## where A is C.sub.7 -C.sub.20 -alkyl or unsubstituted or substituted phenyl, naphthyl or pyridyl, and R is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.6 -alkenyl or C.sub.3 -C.sub.6 -alkynyl or is --COR.sup.x or --SO.sub.2 R.sup.x, where R.sup.x is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.8 -alkyl or phenyl, and their environmentally compatible salts, and herbicides containing one or more triazole compounds I, IA or IB ##STR2## where R.sup.1 is hydrogen, cyclopropyl or unsubstituted or substituted C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.6 -alkenyl or C.sub.2 -C.sub.6 -alkynyl or is C.sub.1 -C.sub.4 -alkoxy, C.sub.2 -C.sub.4 -alkenyloxy or C.sub.2 -C.sub.4 -alkynyloxy, and R.sup.2 and R.sup.3 are each hydrogen, adamantyl or C.sub.1 -C.sub.3 -alkyl or, together with the carbon atom to which they are bonded, form unsubstituted or substituted C.sub.3 -C.sub.7 -cycloalkyl, C.sub.6 -C.sub.10 -bicycloalkyl, C.sub.6 -C.sub.

Abstract: Compounds of the general formula ##STR1## where 5 R is alkyl or substituted or unsubstituted aryl,X is C.dbd.O or CHOH and derivatives thereof,Y is hydrogen, alkyl, alkoxy, halogen, aryl or aryloxy, andn is 1 to 5,and fungicides containing these compounds.

Abstract: Homopolymers or block copolymers of vinylaromatics and/or dienes and hydrogenated derivatives thereof, which contain end groups of the general formula (I):NH--(A).sub.x --NR.sup.1 R.sup.2 .multidot.n H.sub.m S (I)where A is a substituted or unsubstituted bridge which, in addition to carbon, may contain nitrogen or oxygen, X is 0 or 1, S is an inorganic or organic acid radical, n is an integer from 1 to 12 and indicates the number of moles of acid used per chain end, R.sup.1 and R.sup.2 are each hydrogen, aliphatic or aromatic radicals or a bridge of 3 to 12 carbon members which may be substituted by aliphatic or aromatic radicals, and m is the number of hydrogen ions of the acid used, are prepared from polymers having amino end groups of the general formula (II):NH--(A).sub.x --NR.sup.2 R.sup.3 (II)where R.sup.1, R.sup.