Abstract: The invention relates to dry-spun polyacrylonitrile filament yarns having a tensile strength of at least 47 cN/tex and an individual filament denier of at most 1.5 dtex and preferably an overall denier of 20 to 145 tex as well as to a process for the production thereof by spinning, hot drawing and relaxing, wherein the spun filaments are drawn during spinning to such an extent that, after subsequent hot drawing in a ratio of from 1:6 to 1:10 and relaxation, the individual filaments have a denier of at most 1.6 dtex.

Abstract: Cationic dyestuffs of the general formula ##STR1## IN WHICH THE SYMBOLS HAVE THE MEANING MENTIONED ABOVE INTERMEDIATES AND PROCESSES FOR THEIR PRODUCTION AND THEIR USE FOR DYEING AND PRINTING OF NATURAL AND SYNTHETIC MATERIALS.

Abstract: Dyestuffs of the formula ##STR1## WHEREIN R.sub.1 denotes halogen, alkyl, cycloalkyl, aralkyl, nitro, cyano, acyl, acylamino, amino, aminocarbonyl, aminosulphonyl, alkylsulphonyl, arylsulphonyl, alkoxy, aryloxy, aralkoxy, carboxyl, alkoxycarbonyl, aryloxycarbonyl or aralkoxycarbonyl or arylazo,R.sub.2 denotes alkyl, alkenyl, cycloalkyl, aryl or aralkyl,R.sub.3 and R.sub.4 denote alkyl, cycloalkyl or aralkyl,R.sub.5, r.sub.6, r.sub.7 and R.sub.8 denote hydrogen, alkyl, cycloalkyl, aralkyl or aryl,And whereinR.sub.6 and R.sub.7 can together form a fused cycloaliphatic ring,A denotes aryl or heteryl,N denotes 0, 1 or 2 andAn.sup.(-) denotes an anion,Process for their preparation and their use for dyeing and printing especially polyacrylonitrile and acid modified polyamides and polyesters.

Abstract: The invention relates to dry-spun acrylic fibers and filaments having deniers of from 20 to 80 dtex and a strength of at least 1.5 cN/dtex; as well as to a process for their production.

Abstract: The invention relates to a copolymer comprising at least 40% by weight of copolymerized acrylonitrile and from 0.5 to 10% by weight of at least one copolymerized unsaturated ester of acetoacetic acid corresponding to the general formula:CH.sub.3 --CO--CH.sub.2 --COO--R--CR'.dbd.CH.sub.2and, optionally, at least one other copolymerized comonomer.

Abstract: A method of inhibiting or reducing the irritation of skin resulting from allergic contact dermatitis, caused by contact with natural or synthetic allergenic agents, e.g. poison ivy, and dinitrochlorobenzene, respectively, is described. The method comprises applying to the skin an irritating reducing effective amount of a protective agent which is an organic compound having at least two polar groups, e.g. carboxyl groups, separated by a chain of at least 15 atoms the majority of which are carbon atoms and optionally containing a cyclic moiety of at least 5 atoms, prior to contact of the skin with the allergenic agent. The protective agent may be combined in a pharmacologically acceptable base for application to the skin.

Abstract: O-Alkyl OO-(t-octyl) monoperoxycarbonates of the formula [CH.sub.3 C(CH.sub.3).sub.2 CH.sub.2 C(CH.sub.3).sub.2 OOC(.dbd.O)O-].sub.n R where n is an integer from 1-4, such as OO-(1,1,3,3-tetramethylbutyl) O-methyl monoperoxycarbonate, and processes using such compounds as initiators for polymerizing ethylenically unsaturated monomers and as curing catalysts for curing unsaturated polyester resin compositions.

Abstract: A winding process for producing cheeses and cones for natural or synthetic drawn or undrawn filaments, wherein by controlling the traversing frequency DH of the traversing thread guide as a function of time or the radius of the cheese or the rotational speed of the cheese or equivalent parameters are at a constant ratio m'/k', where k' is the order of the ribbon winding and m' is the corresponding number of revolutions of the cheese, ribbon windings of the order k'>2 are exclusively produced.

Abstract: Polyurethane plastics are dyed with dyestuffs of the formula ##STR1## wherein R.sub.1 denotes hydrogen, halogen, optionally substituted C.sub.1 -C.sub.4 -alkyl, optionally substituted C.sub.1 -C.sub.4 -alkoxy and optionally substituted C.sub.1 -C.sub.4 -alkylcarbonylamino and R.sub.2 denotes hydrogen, optinally substituted C.sub.1 -C.sub.4 -alkyl and optionally substituted C.sub.1 -C.sub.4 -alkoxy, while A and B denote optionally branched alkylene chains which can be identical or different and preferably have 2 to 6 carbon atoms, with formation of covalent bonds, in that the dyestuffs are added before or during the polyaddition reaction to the reacton mixture of polyol and polyisocyanate or to one of the components.

Abstract: The invention relates to a process for the production of crosslinked fibres or filaments by spinning an acrylonitrile copolymer containing at least 20 mVal of carboxyl groups per kg of polymer together with a polyoxazoline in a polar organic solvent and thereafter crosslinking at temperatures of from 120 to 190.degree. C.The invention also relates to crosslinked acrylonitrile fibres and filaments obtainable by this process.

Abstract: Process for purifying N,N'-disubstituted p-phenylenediamine antiozonants and oil stabilizers utilizes a steam-distillation step to remove Schiff's base derivatives of p-phenylenediamine and N-monosubstituted p-phenylenediamine as well as aldehyde and ketone contaminants and corresponding alcohols thereof.

Abstract: This invention relates to a process for the production of a high molecular weight polyester by reacting a dicarboxylic acid or a derivative thereof with a diol in the presence of a catalyst comprising a combination of compounds of manganese, magnesium and titanium.

Abstract: Phosphonic acid esters of the formula ##STR1## in which R.sub.1 and R.sub.2 represent optionally halogen-substituted alkyl or together with --O--P--O-- form a five-membered to seven-membered heterocyclic structure,X represents oxygen or ##STR2## wherein R.sub.4 represents hydrogen or alkyl,R represents alkylene with 1 - 4 carbon atoms andA represents alkylene or 1,2-phenylene, which is optionally substituted by halogen, alkyl or halogenoalkyl and is required to complete a five-membered to seven-membered ring system,Are suitable as flameproofing agents for textiles, plastics and paper.

Abstract: The invention relates to a process for the production of a high molecular weight polyester, which comprises reacting a dicarboxylic acid or derivative thereof with a diol in the presence of a combination of compounds of manganese, magnesium, titanium and antimony as a catalyst.

Abstract: The invention relates to gloss-stable modacrylic fibres and filaments comprising 50 to 84% of acrylonitrile, 15 to 48% of vinylidene chloride and 2 to 5% of an olefinically unsaturated sulphonic acid or salt thereof, all percentages being by weight, having a shrinkage in boiling water of at most 0.3%, a reduction in density on treatment with boiling water of no more than 0.015 g/cc and a scattered light component after boiling of at most 35 units compared with a BaSO.sub.4 standard of 1000 units, the increase brought about by treatment with boiling water amounting to no more than 30 units as well as to a process for their production.

Abstract: Azo reactive dyestuffs which in the acid form correspond to the formula ##STR1## wherein R denotes hydrogen or lower alkyl, W denotes a direct bond or a bridge member, Z denotes a reactive group and A denotes the radical of a coupling component, and their use for the dyeing and printing of materials containing hydroxyl groups or amide groups as well as for the wash-fast dyeing and printing of natural or regenerated cellulose.

Abstract: Process for the preparation of tetrachloropyrimidine, characterized in that compounds of the formula ##STR1## wherein R = a radical which can be split off under the reaction conditions andR' = optionally substituted lower allyl radical, are reacted with chlorine or agents which release chlorine, preferably at temperatures from 0.degree. to 150.degree. C and using more than 7.5 mols of chlorine, preferably 8 to 9 mols of chlorine.

Abstract: Process for the preparation of basic oxazine dyestuffs by nitrosation of aminophenol ethers ##STR1## wherein R.sub.1 denotes hydrogen or optionally substituted alkyl or alkenyl,R.sub.2 denotes optionally substituted alkyl, alkenyl, aryl or aralkyl,R.sub.3 denotes hydrogen, alkyl or alkoxy,R.sub.9 denotes hydrogen or alkyl andn denotes 1, 2 or 2,And condensation with phenols ##STR2## wherein R.sub.4 denotes hydrogen or the group ##STR3## R.sub.5 denotes hydrogen, alkyl or alkoxy, R.sub.6 denotes hydrogen or, conjointly with R.sub.5, denotes an aromatic radical,R.sub.7 denotes hydrogen or optionally substituted alkyl or alkenyl, andR.sub.8 denotes hydrogen or optionally substituted alkyl, alkenyl, aryl or aralkyl.

Abstract: Process for the preparation of tetrachloropyrimidine, characterized in that compounds of the formula ##STR1## wherein R = a radical which can be split off under the reaction conditions,Are reacted with chlorine or agents which release chlorine, preferably at temperatures from 0.degree.-150.degree. C and using more than 7 mols of chlorine, in particular using 11-13 mols of chlorine.

Abstract: Cationic dyestuffs and processes for their manufacture and their use for dyeing, printing and bulk dyeing of natural and synthetic materials, particularly of polyacrylonitrile and copolymers of acrylonitrile with other vinyl compounds, acid modified aromatic polyesters and acid modified polyamides.