Abstract: A center-pull fiber package is provided in which a fibrous material may be wound onto a core structure comprising a core element and an overwrap release paper. Upon removal of the center elements, an end of the fibrous material is exposed so that the package may be unwound by removing a predetermined length of the winding from the interior or center of the package.

Abstract: Wholly aromatic thermotropic polyesters are based on(A) from 25 to 60 mol % of a mixture of(A.sub.1) 4-hydroxybenzoic acid and(A.sub.2) 3-hydroxybenzoic acid, 4-aminobenzoic acid and/or 3-aminobenzoic acid or their chlorine, bromine, C.sub.1 -C.sub.8 -alkyl or C.sub.1 -C.sub.8 -alkoxy derivatives substituted in the nucleus,the molar ratio of A.sub.1 to A.sub.2 being from 5:1 to 41:1,(B) from 20 to 37.5 mol % of a mixture of(B.sub.1) terephthalic acid and(B.sub.2) isophthalic acid,the molar ratio of B.sub.1 to B.sub.2 being from 1.04:1 to 19:1, and(C) from 20 to 37.5 mol % of a mixture of(C.sub.1) hydroquinone and(C.sub.2) 4,4'-dihydroxydiphenyl,the molar ratio of C.sub.1 to C.sub.2 being from 0.1:1 to 2.67:1 and the molar ratio of B to C being from 0.9:1 to 1.1:1.

Abstract: Chlorocarboxylic acid chlorides of the formula ##STR1## where R is H or alkyl and n is an integer from 2 to 4, are prepared by reacting a lactone of the formula ##STR2## with phosgene at elevated temperatures and in the presence of a quaternary ammonium salt.

Abstract: Finely divided, spherical, two-layer solid particles having a diameter of from 5 to 100 nm and consisting of(A) from 60 to 70% by weight of a core of spherical, rhombohedral .alpha.-Fe.sub.2 O.sub.3 having a purity greater than 98% and(B) from 30 to 40% by weight of a shell of a basic metal hydroxide sulfate which has an alkali metal ion content of less than 500 ppm and is of the general formulaM.sub.v Mn.sub.w Zn.sub.x (OH).sub.y (SO.sub.4).sub.zwhere M is Mg, Co, Ni, Cd, divalent Fe and/or divalent Cu, v is from O to 0.8, w is from 0.1 to 0.9, x is from 0.1 to 0.9, y is from 1.01 to 1.99, z is from 0.005 to 0.505, v++x 1 and 0.5 y+z=1, and a process for the production of finely divided, magnetic, cubic or hexagonal ferrite particles.

Abstract: The invention relates to water-dilutable binders for cationic electrocoating finishes, the said binders containing latent primary amino groups. In order to prepare the binders, an epoxy resin is reacted with a polyamine, which in addition to a sterically hindered primary amino group also contains at least one primary amino group blocked by reaction with a ketone or aldehyde, and, if appropriate, further primary or secondary amines.

Abstract: The subject invention relates to compositions prepared by oxyalkylation of N-(2-hydroxyalkyl)-aniline as the initiator compound with one or more alkylene oxides at elevated temperatures and in the presence of an alkali metal hydroxide. The resulting compositions have an unsymmetric structure with two functional groups, a secondary amino nitrogen and a hydroxyl group. The initiator compound reacts completely and removal of any residual initiator from the polyol is not required. When the subject invention polyol composition is reacted with an isocyanate, both urea and urethane groups form. The subject polyols may be used in the preparation of polyurethane products as well as nonionic and ionic surfactants.

Abstract: Polymers which have been modified by a polymer-analogous reaction, in the acid form or in the form of their salts, consist of a copolymer of ethylene, (meth)acrylic acid and one or more compounds selected from the group consisting of vinyl esters, vinyl ethers, (meth)acrylates and (meth)acrylamides, and olefinically unsaturated side radicals which have been introduced into the said copolymer by a polymer-analogous reaction and are of the general formula I ##STR1## where X is hydroxyl, amino or mercapto, Y is an ester, amide, ether or C.sub.1 -C.sub.10 -alkylene group and R is hydrogen or methyl.

Abstract: Wholly aromatic polyester carbamides which form a liquid-crystalline fiber-forming melt below 300.degree. C. and are composed of(a) not less than 20 mol % of repeat units of the formula I ##STR1## (b) from 5 to 15 mol % of repeat units of the formula II ##STR2## (c) from 5 to 15 mol % of repeat units of the formula III ##STR3## (d) from 1 to 10 mol % of units of the formula IV ##STR4## (e) a molar amount corresponding to the total amount of components (b), (c) and (d) of repeat units of the formula V ##STR5## the molar proportions of components (a), (b), (c), (d) and (e) adding up to 100 mol % in each case, the preparation thereof and fibers, films moldings and coatings prepared therefrom.

Abstract: Saturated nitrogen-containing five-membered and six-membered heterocycles are aromatized by dehydrogenation in the gas phase in the presence of a supported palladium catalyst containing an alkaline earth metal halide, at from 150.degree. to 350.degree. C. and under from 0.1 to 10 bar.

Abstract: The molecular weight distribution of polytetrahydrofuran and of copolymers of tetrahydrofuran and alkylene oxides is narrowed by a process in which the polymers are mixed with a solvent mixture consisting of (a) an alkanol, (b) a hydrocarbon and (c) water, the content of the individual components a, b and c in the mixture being from 8 to 60% by weight, after which the three phases formed are separated from one another and the polymer having the narrower molecular weight distribution is isolated from the two lower phases.

Abstract: Wholly aromatic mesomorphic polyether ester imides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of(a) from 5 to 35 mol % of repeat units of the formula I ##STR1## (b) from 5 to 35 mol % of repeat units of the formula II ##STR2## where X is a chemical bond, --O--, --S--, --SO.sub.2 --, --CO--, --Ch.sub.2 -- or .dbd.C(CH.sub.3).sub.2, and n is 0 or 1,(c) from 15 to 30 mol % of repeat units of the formula III ##STR3## (d) a molar amount corresponding to the total amount of (b) plus (c) minus (a) of repeat units of the formulae IV and/or V ##STR4## (e) repeat units of the formula VI ##STR5## the mole percentages of components a, b, c, d and e adding up to a 100 mol % in each case,the preparation thereof and fibers, films and molding prepared therefrom.

Abstract: Thermoplastic molding materials contain a blend of a polyphenylene ether with a copolymer which consists of monovinyl-aromatic monomers, alkyl methacrylates where alkyl is of not more than 8 carbon atoms and, if required, an elastomer component having a glass transition temperature of .ltoreq.0.degree. C.

Abstract: High temperature resistant molding materials containing(A) 5-95 mol % of blocks having the structural unit I ##STR1## (B) 5-95 mol % of blocks having the structural unit II ##STR2## (C) 0-80 mol % of blocks having the structural unit III ##STR3## the molecular weight of the blocks being within the range 2000-20,000, where X is --O--, --S--, ##STR4## (only if a or b.noteq.0), ##STR5## (R.sup.7 =R.sup.8 =CH.sub.3 only if a or b.noteq.O) or a chemical bond, R.sup.7 and R.sup.8 are each alkoxy or alkyl of 1-6 carbon atoms, aryl or hydrogen, Q and W are each ##STR6## Z is --O-- or a chemical bond and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each alkyl or alkoxy of 1-6 carbon atoms, aryl, Cl or F and p, q and r are each 0 or 1 and a, b, c, d and e are each 0, 1, 2, 3 or 4.

Abstract: m-Anilido-urethanes of the formula ##STR1## where A and B independently of one another are oxygen or sulfur,R.sup.1 is alkyl, which is unsubstituted or substituted by halogen, alkoxy, alkoxycarbonyl or cyano, or is alkenyl which is unsubstituted or substituted by halogen, or is alkynyl which is unsubstituted or substituted by halogen or alkoxy, or is cycloalkyl which is unsubstituted or substituted by alkyl, or is aryl,R.sup.2 and R.sup.3 are each independently of one another hydrogen, alkyl, alkoxyalkyl or haloalkyl,R.sup.4 is alkylene of 1 to 6 carbon atoms which is unsubstituted or substituted by alkyl, alkoxyalkyl or haloalkyl,X is hydrogen, alkyl, haloalkyl, alkoxy, halogen, nitro or amino,Y is hydrogen, alkyl, haloalkyl, alkoxyalkyl, cycloalkyl, aralkyl, halogen, alkoxy, haloalkoxy, alkylthio, nitro, aryl, thiocyanato, cyano, ##STR2## where R.sup.5 and R.sup.6 are each, independently of one another, hydrogen or have the meanings given for R.sup.

Abstract: Hemin is isolated from acidic aqueous solution, and is purified, by crystallization in the presence of a cationic, nonionic or amphoteric surfactant as a crystallization catalyst.

Abstract: Cyclohexenol derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, X and A have the meanings stated in the description, are used for controlling undesirable plant growth.

Abstract: A filament bundle comprising a plurality of filaments is dyed level with a dye solution during continuous dyeing of the filament bundle by opening the filament bundle during dyeing in the horizontal and vertical direction by means of a driven roll having a sawtoothlike thread profile.

Abstract: Substituted 5-formyl-1,3-dioxepans of the general formula I ##STR1## where R.sup.1 is a straight-chain or branched alkyl radical of 1 to 10 carbon atoms which may furthermore contain oxygen in the form of an ether group, or a 5-membered to 8-membered ring which is unsubstituted or substituted by alkyl groups and/or an alkylene group, has up to 10 carbon atoms and may furthermore contain oxygen in the form of an ether group, R.sup.2 is hydrogen, or R.sup.1 and R.sup.2 together form an alkylene radical of 4 to 10 carbon atoms which is unsubstituted or substituted by alkyl or alkoxy and may furthermore contain oxygen in the form of an ether group, and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each hydrogen or methyl, and the total number of carbon atoms is not more than 25, their preparation and their use as scents.

Abstract: Cathodic electrodepositable resin compositions and aqueous electrodeposition coating baths comprising these resins are disclosed. The resin compositions comprise a cationic amine epoxy resin adducts and a cationic polyurethane resin adduct dispersion. The resin compositions when combined with a cross-linking agent and cathodically electrodeposited produce films which cure to durable, flexible, smooth corrosion-resistant, impact and chip-resistant films.

Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1, R.sup.2, A and X have the meanings given in the disclosure, a process for their manufacture, herbicidal and plant growth-regulating agents containing the novel active ingredients, and methods of combating unwanted plant growth and of regulating plant growth.