Abstract: Pyranthrone pigments of the formula ##STR1## WHEREIN N IS 0 OR 1, WHEREIN WHEN N IS 0, EACH A is hydrogen or chlorine, and when n is 1, each A is chlorine are prepared by crystallizing a finely divided crude pyranthrone pigment in an organic polar solvent, in the presence of from 0.5 to 10% by weight, based on the crude pigment, of an anthraquinone compound of the formula ##STR2## WHEREIN X is chlorine, Y is alkyl of 1 to 4 carbon atoms, hydroxyl, carboxyl, carbo-alkoxy, wherein said alkoxy group has 1 to 4 carbon atoms, or carbophenoxy, p is 0, 1 or 2 and m is 0, 1 or 2.

Abstract: There are disclosed processes for preparing a textile treated with a water-insoluble polyester wherein a linear or branched chain water-soluble sulfonate or phosphate group containing polyester is coated or impregnated onto a textile substrate in combination with a crosslinking agent and subsequent to heating to co-react the crosslinking agent with the polyester, the treated textile substrate is exposed to an aqueous solution of a polyvalent metal ion reactive with said sulfonate or phosphate groups in said polyester.Alternatively, there are disclosed processes for preparing a water-insoluble polyester on a textile substrate wherein a branched chain polyester having sulfonate or phosphate groups is coated or impregnated onto a textile substrate, the substrate is dried and subsequently exposed to an aqueous solution of a polyvalent metal ion reactive with said sulfonate or phosphate groups in said polyester.

Abstract: Concentrated dithionite solutions are produced by cathodic reduction of an aqueous solution, containing sulfite and/or bisulfite, which is circulated by pumping. The cathode and anode chambers are separated from one another by a permselective cation exchanger membrane. The catholyte must be circulated at least 10 times per hour and the selective catholyte volume outside the cell, defined asa = V.sub.total -V.sub.C /V.sub.total,Should be less than 0.9.

Abstract: In an apparatus for centering and joining cylindrical wound sections, which are not dimensionally stable, of fiber-reinforced plastics, a plurality of struts which join a central tube to a profile ring are provided. The apparatus further comprises, arranged as an extension of the struts, levers which are detachably fastened to the profile ring by means of swivel joints, and guide rails. By replacing these levers, rapid refitting to deal with larger or smaller diameters of wound sections is achieved.

Abstract: Unsymmetrical monoketals of aromatic 1,2-diketones ##STR1## wherein R.sup.1 and R.sup.2 are different radicals, are manufactured by reacting the corresponding aromatic 1,2-diketones, in an organic solvent, with an acid ester (R.sup.1).sub.n X as alkylating agent and an alcoholate (R.sup.2 O).sub.m Me, where n and m are integers from 1 to 3, X is an acid radical and Me is a metal of main groups 1 to 3 of the periodic table of the elements. The resulting diketone monoacetals are particularly suitable for use as photoinitiators in photopolymerizable compositions.

Abstract: Thermoplastic molding compositions, based on polymers of a monovinyl-aromatic compound which have been modified with rubber to increase their impact strength, which also exhibit increased stress crack resistance.The increased stress crack resistance is achieved if the proportion of the soft component in the polymer which has been modified to increase its impact strength, and the particle size and swelling index of the soft component phase, conform to particular values, and the tensile strength and yield stress of the thermoplastic molding compositions bear a particular ratio to one another.The molding compositions may in particular be used for the manufacture of internal liners of refrigerators and foodstuff packaging containers.

Abstract: Herbicides containing compositions of glycolic acid amides and other active ingredients.

Abstract: Photopolymerizable compositions for the manufacture of relief printing plates, especially relief plates for making mats, comprising an alcohol-soluble linear polyamide, a photoinitiator and a mixture of (a) a diether or triether obtained from 1 mole of an aliphatic diol or triol and from 2 to 3 moles of N-hydroxymethylacrylamide or N-hydroxymethylmethacrylamide and (b) an unsaturated ester-urethane obtained from 1 mole of toluylene diisocyanate and 2 moles of a hydroxyalkyl acrylate or methacrylate, (a) and (b) being mixed in specific ratios.

Abstract: An industrially advantageous process for the manufacture of vitamin B6 (pyridoxin) from 2-methyl-3-hydroxy-4,5-bis-(halomethyl)-pyridine, wherein the starting compound is first converted in the conventional manner to the corresponding pure acetoxy compound which is reacted with an alkali metal acetate, alkaline earth metal acetate or tertiary ammonium acetate to give pyridoxin triacetate, from which pyridoxin can be liberated by hydrolysis or trans-esterification.

Abstract: Crosslinked water-soluble reaction products for the papermaking industry obtained by reacting(a) 1 part by weight of a polyamidoamine obtained by condensation of 1 mole of a dicarboxylic acid with from 0.8 to 1.4 moles of a polyalkylenepolyamine such as diethylenetriamine, up to 8 ethyleneimine units per basic nitrogen atom being optionally grafted onto the condensation product, with(b) from 0.3 to 2 parts by weight of a reaction product of a polyalkylene oxide having from 8 to 100 alkylene oxide units with epichlorohydrin,In aqueous solution at a temperature of from 20.degree. to 100.degree. C., the solution having a solids content of from 5 to 50% by weight. The viscosity of an aqueous solution containing 20% of the reaction product is from 300 to 2,500 centipoises at 20.degree.C.

Abstract: The present invention relates generally to a transducer positioning and adjusting apparatus and, more particularly, to an improved system for accurately and reproducibly positioning a transducer head in vertical relationship to a series of parallel horizontal tracks on a recording medium such as magnetic video tape. The apparatus comprises a frame upon which the elements of the system are mounted and with respect to which they are vertically aligned. A cam having a plurality of horizontally planar steps formed about its upper surface is rotatably mounted upon said frame and a vertically moveable bearing post, which is secured at one end to the transducer head, is held in continuous contact with the stepping surfaces formed on the cam. A ball bearing which contacts the underside of the cam substantially beneath the stepping surface upon which the bearing post is held in contact is utilized to support the cam on the mounting frame and maintain said stepping surface in precise vertical alignment therewith.

Abstract: Aluminum salts of N-nitroso-N-alkylhydroxylamines are produced by the reaction of an aluminum salt with an alkali metal salt, alkaline earth metal salt and/or ammonium salt of an N-nitroso-N-alkylhydroxyl-amine and/or the aftertreatment of an appropriate aluminum salt in the presence of water and an organic solvent. The products have fungicidal properties and are starting materials for the production of fungicides for wood preservatives, colored surface coatings, synthetic resins and dye formulations.

Abstract: Polyether-ester polyols are prepared in the presence of from 0.005 percent to 0.01 percent by weight (50-100 ppm) of a trialkylamine. The resulting polyols have improved color and are obtained in markedly reduced reaction times.

Abstract: New polycyclic Diels-Alder adducts which are formed on reaction of 8-vinyl-tricyclo-[5,2,1,0.sup.2,6 ]-dec-8-ene or 8-hydroxy-8-vinyl-tricyclo-[5,2,1,0.sup.2,6 ]-decane with alkenes or alkynes having one or two activating substituents, e.g., --COOH, --COOCH.sub.3, --COOC.sub.2 H.sub.5, --CHO, --COCH.sub.3, --COC.sub.2 H.sub.5 or --CN. They have green, fresh, fruity and in some cases woody odors with long-lasting tenacity and/or fixing properties. They can be used as constituents of perfumes and of compositions for perfuming body care products, detergents and other consumer products.

Abstract: Styrene polymers or copolymers containing bromine are manufactured by cationic polymerization of the monomer, or of the monomer plus a copolymerizable monomer of the isobutylene or nuclear-alkylated styrene type, in an organic solvent in the presence of a Lewis acid catalyst. Bromine is then added to the solution without first working up the latter. The catalyst used for the bromination is the same as that used for the polymerization. If necessary, fresh catalyst may be added before the bromination. After completion of the bromination the reaction solution is extracted with water until it is bromide-free, and the solvent, generally a halohydrocarbon, is then stripped off. Products containing up to about 80% by weight of bromine may be obtained. They have a pale yellowish color and exhibit no significant decomposition up to 340.degree. C. They may be used as flame-proofing agents for thermoplastics.

Abstract: A process for the manufacture of .beta.-haloacetals or .beta.-haloketals by reaction of substituted or unsubstituted phenols with vinyl ethers in the presence of chlorine-liberating compounds and an inert diluent or solvent at a temperature of from -70 to +40.degree. C.

Abstract: High current efficiency can be obtained in an electrolytic cell by inducing turbulence in the catholyte preferably by utilizing a gas-directing cathode and cation-permselective membrane combination. There is disclosed a process for electrolysis, particularly, the electrolysis of an alkali metal chloride such as sodium chloride to produce chlorine and sodium hydroxide. Said cell has a cathode and an anode divided into catholyte and anolyte compartments by a cation-permselective membrane. Turbulence inducing means such as a gas-directing cathode provides turbulence in said catholyte at the surface of said membrane by directing gas evolving on said cathode toward or away from said membrane. Multicell arrangements are also disclosed wherein said cells are connected in series.

Abstract: A pigment which is stable in nitrocellulose and comprises at least one trisaminotriarylmethane dye and heteropolyacids based on phosphoric acid, molybdic acid or tungstic acid, the pigment containing from 0.1 to 10% by weight (based on the pigment formulation) of a compound which possesses at least one --N(CH.sub.2 --COOH).sub.2 group. The pigment may be used for the stable coloration of nitrocellulose-containing printing inks and finishes or of nitrocellulose chips.

Abstract: 3-Halosulfonylthiophene-carboxylic acid compounds are manufactured by reacting 3-ketothiophane-carboxylic acid compounds with sulfonic acid compounds, reacting the end product from the 1st reaction stage with alkali metal polysulfides, reacting the end product from the 2nd stage with a dehydrogenating agent and finally reacting the end product from the 3rd stage with halogen and water. The products are starting compounds for the manufacture of drugs, dyes and crop protection agents and have an anti-inflammatory, analgesic and anti-rheumatic action. In particular, the end products I are starting materials for the manufacture of sweeteners which are non-toxic and free from an after-taste, flavor-improving agents, diabetic aids and feedstuffs, and provide the means of a simple and economical synthesis of thiophene-saccharins.

Abstract: A fungicidal composition for wood preservation containing derivatives of heavy metal salts of N-nitroso-N-cyclohexylhydroxylamine, and a process for combatting fungi with these derivatives.