Abstract: A tensioning device for hubs, comprising a winding shaft having rotatably and drivably mounted on it individual winding elements as hub holder for hubs with inner cylindrical bores, the tensioning device including measures for locking the hubs in the axial direction on each individual winding element, wherein the hub (1) includes along its inner circumference (3), alongside the inner bore (5) and uniformly distributed over the circumference, a multiplicity of resilient elements (2), which have the form of a bent-off arm which extends in the radial direction from the inner circumference (3) of the hub (1) and is bent off in the circumferential direction, the end (4) of each resilient arm being at a distance from the bending point of the next-following arm.

Abstract: Pigment formulations containing(a) at least one finely divided pigment,(b) at least one copolymer obtainable by free radical polymerization of(.alpha..sub.1) C.sub.8 -C.sub.40 -monoolefins or(.alpha..sub.2) C.sub.8 -C.sub.40 -alkyl vinyl ethers or(.alpha..sub.3) a mixture of C.sub.8 -C.sub.40 -alkyl vinyl ethers and up to 50 mol % of C.sub.8 -C.sub.40 -monoolefins with(.beta.) monoethylenically unsaturated C.sub.4 -C.sub.12 -dicarboxylic acids or C.sub.4 -C.sub.12 -dicarboxylic anhydridesand having a molecular weight of from 500 to 20,000 g/mol, some or all of whose carboxyl or anhydride groups may be reacted with ammnonia, amines, alcohols, amino- or hydroxycarboxylic acids or alkali metal or alkaline earth metal hydroxides, and(c) if required, further assistants conventionally used in pigment formulationsare used for the preparation of pastes, printing inks and coatings.

Abstract: Fuels for internal combustion engines or lubricants contain small amounts of compounds of the formulae Ia and/or Ib ##STR1## where R is an aliphatic hydrocarbon radical having a number average molecular weight of from 250 to 5,000 and X is ##STR2## where the radicals R.sup.1 may be identical or different and are each hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.8 -hydroxyalkyl or C.sub.1 -C.sub.8 -aminoalkyl, or where the two radicals R.sup.1 may form a nonaromatic ring.

Abstract: A polymer comprising essentially at least two different repeat units of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or methyl,n is 0 or an integer from 1 to 9, andR.sup.3+n are from two to ten mutually different groups selected from hydrogen, C.sub.1 -C.sub.22 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.4 -alkyl, which radicals, except the C.sub.1 -C.sub.22 -alkyl, may each be monosubstituted, disubstituted or trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen,is obtainable by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of (meth)acrylic acid with ammonia and from one to nine primary amines or a mixture of from two to ten primary amines of the general formula IIR.sup.3+n NH.sub.2 II.

Abstract: A synthetic resin contains, as essential components,A) a crosslinkable binder selected from the group consisting of the polymers, polyadducts or polycondensates having reactive centers in the form of hydroxyl, thio or primary or secondary amino groups andB) a crosslinking agent based on at least one polyoxyalkylene polyisocyanate andC) a crosslinking agent which differs from (B) and is based on.gamma..sub.1) a polyfunctional isocyanate which differs from (B) or.gamma..sub.2) an organic compound which reacts at elevated temperatures with free amino groups of component (A) with amide formation or.gamma..sub.3) an organic compound which reacts at elevated temperatures with hydroxyl groups of component (A) with transesterification or.gamma..sub.4) a phenolic Mannich base ora mixture of two or more crosslinking agents (.gamma..sub.1) to (.gamma..sub.4).

Abstract: A magnetic tape cassette is provided with a raised housing part. The conventional two-part housing of such a cassette is formed by essentially planar housing parts connected to one or more third separate housing parts which can be suitably connected to and/or can connect the planar housing parts. The position of the tape guide elements can be improved for all cassettes of this raised housing part type.

Abstract: Structured layers of heat-resistant polycondensates are prepared by a process wherein ethylenically unsaturated tetracarboxylates or adducts or salts of tetracarboxylates, which still contain at least one unesterified carboxylic acid group, with ethylenically unsaturated amines, amides or onium compounds mixed with compounds which contain amino, isocyanate or blocked isocyanate groups and can be subjected to polycondensation with the tetracarboxylates are applied as a layer to a substrate, this layer is exposed through a negative, the unexposed, soluble parts are then removed and the insoluble parts are converted into the final polycondensate form at elevated temperatures.

Abstract: Copolymers are composed ofa) from 0.01 to 40% by weight of a copolymerized ethylenically unsaturated compound having at least one isocyanate group blocked with an oxime,b) from 30 to 99.99% by weight of at least one C.sub.1 -C.sub.20 -alkyl (meth)acrylate, one vinyl ester of carboxylic acids of 1 to 20 carbon atoms, one vinylaromatic of up to 20 carbon atoms, one ethylenically unsaturated nitrile of 3 to 6 carbon atoms, one vinyl halide or one nonaromatic hydrocarbon of 4 to 8 carbon atoms having at least 2 conjugated double bonds,c) from 0 to 30% by weight of at least one comonomer having at least one keto or aldehyde group andd) from 0 to 50% by weight of at least one further monomer.

Abstract: An aqueous polymer dispersion with a final solids volume concentration of at least 50% by volume is obtainable by polymerizing at least one radical polymerizable monomer by the method of free radical aqueous emulsion polymerization with the addition of an aqueous dispersion of a starting polymer.

Abstract: A process for preparing 3-(2'-oxyethyl)dihydro-2(3H)furanones of the general formula I ##STR1## where R.sup.1 is hydrogen or acetyl, by reacting ethylene oxide with acetoacetic acid esters of the general formula II ##STR2## where R.sup.2 is C.sub.1 -C.sub.4 -alkyl, which comprises carrying out the reaction in alcoholic solutions in the presence of alkali metal alkoxides at from 20.degree. to 100.degree. C. and from 1 to 20 bar, is described.

Abstract: Disclosed are stable liquid products as consisting essentially ofat least one finely dispersed physiologically tolerated fat-soluble substance as disperse phase;glycerol or glycerol mixed with water as continuous phase; andesters of ascorbic acid with long-chain fatty acids as an emulsifier and stabilizer.

Abstract: Caprolactam is purified by oxidative treatment in which mixtures which essentially contain the caprolactam to be purified and unsaturated lactams are treated with oxygen or an oxygen-containing gas mixture in an alkaline medium.

Abstract: Optically active compounds of the formula I ##STR1## where R is C.sub.1 -C.sub.12 -alkyl or -perfluoroalkyl in which one or two non-adjacent CH.sub.2 or CF.sub.2 groups can also be replaced by --O-- and/or --CO-- and/or --CO--O-- and/or --CH.dbd.CH-- and/or --CH-halogen-- and/or --CHCN-- and/or --0--CO--CH-halogen-- and/or --O--CO--CHCN--, or is C.sub.1 -C.sub.12 -alkyl which can have a terminal chemically reactive group and in which a CH.sub.2 group can be replaced by --O--,A.sup.1 and A.sup.2 are each, independently of one another, 1,4-phenylene which is unsubstituted or substituted by one or two F and/or Cl and/or Br atoms and/or CH.sub.3 groups and/or CN groups and in which one or two CH groups can also be replaced by N, 1,4-cyclohexylene in which one or two non-adjacent CH.sub.2 groups can also be replaced by --O-- and/or --S--, 1,4-piperidinediyl, 1,4-bicyclo[2.2.2]octylene, 2,6-naphthalenediyl, decahydro-2,6-naphthalenediyl or 1,2,3,4-tetrahydro-2,6-naphthalenediyl,A.sup.

Abstract: A process for preparing dianthraquinone-N,N'-dihydroazine (I) ##STR1## and its chlorination products (Ia) ##STR2## where n is 1 or 2, by condensation of 1-aminoanthraquinone (II) in the presence of an alkaline condensing aid, an oxidizing agent and a cyclic urea derivative at from 80.degree. to 150.degree. C. and subsequent purification and/or chlorination comprises using N,N'-dimethylpropyleneurea as the urea derivative.

Abstract: A series of oligomeric adducts of diols and diepoxides are disclosed which are precursors of amine resins for use in electrodeposition coatings. The adducts are epoxide-alcohol addition products of a polyaromatic and/or a mono-aromatic diol and a polyaromatic bis-glycidyl ether, and/or a monoaromatic bis-glycidyl ether and/or an alkoxy arylene bis-glycidyl ether, thioether or amine. The coatings which include amine resin, cross linking agent, grind resin and pigment exhibit excellent corrosion resistance.

Abstract: Aqueous polymer dispersions contain, as a dispersant, a mixture of an ethylene oxide/propylene oxide copolymer, an ethoxylated alkylphenol and/or an ethoxylated fatty alcohol, an ethoxylated polysaccharide and, if required, as a further component, sulfuric acid half-esterified with an ethoxylated alkylphenol and/or an ethoxylated fatty alcohol.

Abstract: A process for the catalytic isomerization of secondary .alpha.-alkenols of formula I ##STR1## in which R.sup.1 is a C.sub.1 -C.sub.20 alkyl group or a C.sub.2 -C.sub.2 alkenyl group and in which R.sup.2 stands for hydrogen, a halogen atom, a C.sub.1 -C.sub.10 alkoxy group, a carbonyl group, or a C.sub.1 -C.sub.20 alkyl group and in which R.sup.1 and R.sup.2 can be joined together to complete a five-membered or six-membered carbocyclic ring, to primary .alpha.-alkenols of formula II ##STR2## or for the isomerization of primary .alpha.-alkenols of formula II to secondary .alpha.-alkenols of formula I, wherein the isomerization is carried out in the presence of organotrioxorhenium(VII) compounds of formula III ##STR3## in which R.sup.3 is a C.sub.1 -C.sub.10 alkyl group, a cyclopentadienyl group substituted by from one to five C.sub.1 -C.sub.4 alkyl groups, an unsubstituted cyclopentadienyl group, a C.sub.6 -C.sub.10 aryl group, or a C.sub.7 -C.sub.

Abstract: Carbamates having a long-chain N-alkyl radical, a process for the preparation of the carbamates in a conventional manner and fuels and lubricants which contain these carbamates as additives.

Abstract: The invention relates to foamed polylactide articles obtainable by foaming a mixture of amorphous polylactide granules which contain a blowing agent and of a finely divided polylactide which does not contain a blowing agent, and to a process for producing same.

Abstract: An aqueous composition cleans and sanitizes carpets and the like. The composition contains (in percents by weight) from about 3 to about 15 percent peroxide, up to about 5% of volatile ammoniated substance, up to about 30% volatile wetting agent, and the balance water. The solution is substantially completely volatile so that it does not leave a soil harboring residue.