Abstract: The invention relates to a process for the production of bifilar fibres and filaments consisting of only one acrylonitrile polymer. The polymer is dissolved in a usual solvent and the resulting solution is divided up into two solution streams. After these solution streams have been brought to different temperatures they are spun by a conventional bifilar spinning technique.

Abstract: The invention relates to a process for continuously removing residual solvent from filaments of dry-spun acrylonitrile polymers to values of below 2% by weight of solvent by a multi-stage hot-wash with low quantities of water.

Abstract: The invention relates to a method of keeping nozzle bodies or breaker plates clean during extrusion of polymer which can be shaped from the melt which comprises preventing the formation of deposits near the nozzle orifices by gassing these orifices at the point of extrusion of the melt, said gas consisting entirely or partly of vapors of substances which have a depolymerizing action on the deposits formed from the melt at the edge of the nozzle orifice.

Abstract: Dyestuffs of the formula ##STR1## wherein D represents the radical of an aromatic carbocyclic or heterocyclic diazo component,K represents the radical of a carbocyclic or heterocyclic coupling component,A and B represent a direct bond or a bridge member,R.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl, optionally substituted phenyl or naphthyl, carbo-C.sub.1 -C.sub.4 -alkoxy, cyano or optionally substituted carboxamide,R.sub.2 represents C.sub.1 -C.sub.4 -alkyl or optionally substituted phenyl or naphthyl andm and n represent 0, 1 or 2, and the sum of m and n denotes 1 or 2,Are suitable for the dyeing of natural and synthetic fibre materials, particularly polyamide materials in level, violet to blue-green shades in good color yield and with good fastness properties.

Abstract: The invention is directed to dyestuffs of the formula ##STR1## wherein THE PHENYL NUCLEI A, B, D and E can each be substitutedm is 2 or 3 andn is 1-3.The dyestuffs are outstanding for dyeing polyesterfibres in yellow shades. They are distinguished by their high stability in boiling dyebathes at pH 7 to 10.

Abstract: Reactive dyestuffs of the formula: ##STR1## wherein R is H, alkyl or aryl,A is a reactive groupm is 2 or 3X is hydrogen, halogen, nitro or triazolyl which are useful for dyeing or printing of cellulose and NH containing materials.

Abstract: In a process for dyeing synthetic polyamide fibre materials with metal-free acid dyestuffs a dye liquor is used which contains compounds of the formula ##STR1## wherein R.sub.1 represents an alkyl and/or alkenyl radical with 12-22 carbon atoms,R.sub.2 represents hydrogen and/or methyl,m represents 0 or 1,n represents 2 or 3 andThe sum of x + y + z represents a number from 10-30, and compounds of the formulaR.sub.3 -- B -- XwhereinR.sub.3 represents an alkyl radical with 12-22 carbon atoms and/or a phenyl or/and naphthyl radical which contains a total of 12-22 carbon atoms and is substituted by one or more alkyl radicals,B represents --O--SO.sub.2 -- and/or --SO.sub.3 andX represents hydrogen or an ammonium, alkali metal, alkaline earth metal, mono-, di- or tri-alkyl-ammonium or hydroxyalkylammonium ion with, in each case, 1-4 carbon atoms in the alkyl radical, or represents a cyclohexyl-ammonium ion.

Abstract: A fly trap has a bait jar surmounted by an entry chamber which has a number of scent dispersal holes and a number of insect entry holes. The entry chamber communicates with and is surmounted by a tunnel the far end of which is partly closed so as to allow insects to pass from the entry chamber and out of the tunnel into a fly collection chamber which is surrounded by a translucent disposable container.

Abstract: Bis-benzoxazolyl compounds of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another denote hydrogen, halogen, optionally substituted C.sub.1 -C.sub.8 -alkyl, optionally substituted C.sub.1 -C.sub.4 -alkoxy, aralkyl, aryl, carboxyl, cyano, C.sub.1 -C.sub.4 -alkoxycarbonyl, carboxamide which is optionally substituted by C.sub.1 -C.sub.4 -alkyl, aryl or aralkyl, or C.sub.1 -C.sub.4 -alkylsulphonyl, or 2 adjacent radicals R.sub.1 -R.sub.4 represent a fused, optionally substituted aromatic or hydroaromatic ring, are suitable for the brightening of plastics and of polyester fibres.

Abstract: Dyestuffs, which in the form of the free acid of the formula ##STR1## wherein R.sub.1 denotes hydrogen, nitro, cyano, SO.sub.2 --R.sub.7, CONR.sub.8 R.sub.9, SO.sub.2 NR.sub.8 R.sub.9, SO.sub.2 OR.sub.10, COOR.sub.10, SO.sub.2 --NHSO.sub.2 --R.sub.11, sulpho or alkyl,R.sub.2 denotes hydrogen, nitro, halogen or optionally substituted alkyl, alkoxy or aryl,R.sub.3 denotes hydrogen, halogen, SO.sub.2 --R.sub.7, SO.sub.2 --NR.sub.8 R.sub.9 or optionally subsituted alkyl, alkoxy or aryl,R.sub.4 denotes hydrogen, halogen or optionally substituted alkyl, alkoxy or aryl,R.sub.5 denotes hydrogen or optionally substituted alkyl,R.sub.6 denotes alkylene,R.sub.7 denotes optionally substituted alkyl, aryl or aralkyl,R.sub.8 and R.sub.9 denote hydrogen, optionally substituted alkyl, cycloalkyl, aryl or aralkyl or the radical of a heterocyclic compound or, together with the N-atom, denote a heterocyclic structure,R.sub.10 denotes hydrogen or optionally substituted alkyl, aryl or aralkyl,R.sub.

Abstract: The invention relates to a process for the production of chemically uniform acrylonitrile-vinyl chloride copolymers with improved whiteness and improved thermal stability comprising from 25 to 60% by weight of acrylonitrile and from 40 to 75% by weight of vinyl chloride and, optionally, up to 15% by weight of other copolymerized ethylenically unsaturated compounds by emulsion polymerization using a redox catalyst of persulphate and compounds of sulphurous acid, wherein the ratio by weight of reducing component to oxidizing component is at least 4 : 1 and wherein polymerization is carried out at a pH-value in the range of from 2.5 to 4.

Abstract: Dyestuff dispersions and dyestuff solutions free from salt or at least having a low salt content are obtained in that the diazotization is carried out with addition of free dispersing agent acid to which, after the synthesis, either no basic agents are added or basic agents are added only up to a pH value of 3. The disclosed process gives dyestuff compositions of low salt content and results in readily dispersible dyestuffs when water insoluble dyestuffs are prepared and stable solutions when water soluble dyestuffs are prepared. The process is widely applicable and chemical constitution of the dyestuffs is conventional.

Abstract: Reactive dyestuffs of the formula ##STR1## in which Q and P are hydrogen or sulfonic acid but cannot simultaneously have the same meaning; andD is a radical of an aromatic-carbocyclic or aromatic-heterocyclic diazo component which contains a reactive group; are disclosed. These are useful for the dyeing and printing of materials containing hydroxyl groups or amide groups, such as textile fibres, filaments and fabrics of wool, silk and synthetic polyamide and polyurethane fibres, and for the wash-fast dyeing and printing of natural or regenerated cellulose, the treatment of cellulose materials being appropriately carried out in the presence of acid-binding agents and if appropriate by the action of heat, in accordance with the known processes for reactive dyestuffs.

Abstract: The production of copper phthalocyanine in accordance with German Offenlegungsschrift No. 2,432,564 is improved by the process which is characterized in that the reaction product formed at 130.degree.-300.degree. C from optionally substituted phthalic anhydride, reaction products of optionally substituted phthalic anhydride with ammonia, or the dehydration products thereof, urea and, optionally, a catalyst is reacted with a copper salt and, optionally, a catalyst at temperatures of 150.degree.-350.degree. C and preferably 170.degree.-300.degree. C with the proviso that the catalyst is added either during the preparation of the starting material or during the reaction with the copper salt.

Abstract: The invention relates to a copolymer comprising at least 40% by weight of copolymerized acrylonitrile, from 0.5 to 40% by weight of at least one copolymerized aceto acetate of a mono (meth) acrylate of an aliphatic diol containing from 2 to 8 carbon atoms and, optionally, at least one other copolymerized comonomer.

Abstract: The invention relates to a synthetic polymer composition stabilized against light, heat and atmospheric influences comprising a polymer and from 0.01 to 10% by weight based on the quantity of the synthetic polymer, of a mixture of .alpha.,.alpha.'-bis-(2-hydroxy-3,5-dialkylphenyl)-m-diisopropyl benzene and .alpha.,.alpha.'-bis-(2-hydroxy-3,5-dialkylphenyl)-p-diisopropyl benzene, the mixture containing at least 20% by weight of the m-compound. The stabilized synthetic polymer compositions are used in various forms, e.g. in the form of fibres, filaments, yarns, sheetings, films, foils, latex, foam or coatings.

Abstract: Use of the dyestuffs of the formula ##STR1## wherein R, Y and X have the meaning given in the description, for the dyeing of synthetic textiles, especially those of aromatic polyesters, by the transfer printing process.Prints obtained are distinguished by good fastness in use properties.

Abstract: Anionic dyestuffs which contain, as the cation an ammonium ion of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another denote hydrogen, C.sub.1 -C.sub.6 -alkyl which is optionally substituted by hydroxyl, cyclopentyl, cyclohexyl or phenyl, naphthyl or benzyl which are optionally substituted by halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, or one of the radicals --(CH.sub.2 --X--O).sub.n --H, [-alkylene-N (R.sub.3 --].sub.P --R.sub.3 or -arylene-N (R.sub.3)--(CH.sub.2 --X--O).sub.n --H or denotes, together with the nitrogen atom, a 5-membered to 7-membered heterocyclic radical,R.sub.3 denotes hydrogen, C.sub.1 -C.sub.6 -alkyl which is optionally substituted by OH, cyclopentyl, cyclohexyl or phenyl, naphthyl or benzyl which are optionally substituted by halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, or the radical --(CH.sub.2 --X--O).sub.

Abstract: Reactive dyestuffs are disclosed having the formula ##STR1## in which D is the radical of an organic nonanthraquinoid dyestuff; R is hydrogen or a lower alkyl; R.sub.1 is amino or substrated amino with substituents attached by a single bond, optionally etherified hydroxy, optionally etherified mercapto or an optionally substituted hydrocarbon radical; Q is an alkylene, aralkylene, arylene, --CO-- or --SO-- which is directly linked to a carbon atom of the ring of the dyestuff D; n is the number 0 or 1 and F is a fluoro substituent. The group --N(R) is directly linked to a carbon atom of the triazine ring and on the other side, the group --N(R) is linked to a carbon atom of the ring of the dyestuff D either directly (if n = 0) or (if n = 1) via one of the bridge members mentioned above. These dyestuffs are primarily suitable for dyeing of textile materials containing hydroxyl or nitrogen such as natural and regenerated cellulose, wood silk, polyamide and polyurethane.

Abstract: Triaryl-methane dyestuffs which are free from sulfonic acid and carboxylic acid groups and are selected from the group consisting of dyestuffs having one of the following four formulae: ##STR1## wherein R is alkyl, aralkyl, cycloalkyl or aryl; R.sub.1 is hydrogen, alkyl, aralkyl or cycloalkyl; R.sub.2 is alkyl, aralkyl, cycloalkyl or aryl; R.sub.1 and R.sub.2 additionally including divalent alkylene when joined together with the nitrogen or with a carbon atom in the o-position in the ring A to form a heterocyclic ring; R.sub.3 is hydrogen, alkyl, aralkyl, aryl, aralkoxy, aryloxy, halogen, carboxylic acid ester radical, carbonamido, sulfonamido, cyano, nitro, alkylsulfonyl, aryalkylsulfonyl, arylsulfonyl or acyl; and X is the radical of an anion; ##STR2## wherein R is alkyl or cycloalkyl; R.sub.1 is hydrogen, alkyl, aralkyl, cycloalkyl or aryl; R.sub.2 is alkyl, cycloalkyl, aralkyl or aryl, halogen or cyano; R.sub.1 and R.sub.