Abstract: Centrifuge for separation of a mixture of solid particles, a specifically heavier liquid, and a specifically lighter liquid into the three component parts, having a conveyor helix 3 for moving the solid particles to one end of the drum 1, and, at the other end of the drum, a paring system, i.e. a centripetal pump 18, for removing one of the liquids under pressure and a catchment 24 for the removal of the other liquid without pressure. In order to permit removal of either the heavier phase (FIG. 1) or the lighter phase (FIG. 2) by the paring system a separating disk 6, 7 is disposed adjacent each end of the drum. The separator disks project radially outwardly from the helix and extend through the lighter liquid and partially through the heavier liquid. Each disk is provided with a closable opening at the level of the zone of separation. A weir for the overflow of liquid to go to the catchment 24 is provided by a conduit 21 having an open end disposed adjacent the solids discharge end of the drum.

Abstract: A cold-stable catalytically active solution of diisopropoxy-bis (2,4-pentanedionato)-titanium(IV) in isopropanol, said solution containing 0.05 to 0.15 mol of water per mol of said titanium compound.

Abstract: A novel assistant mixture containing at least (A) an acid ester, or a salt thereof, of a polyadduct of propylene oxide with a polyfunctional aliphatic amino or hydroxy compound which contains 2 to 9, and preferably 2 to 6, carbon atoms and has at least one amino or hydroxyl group capable of entering into an addition reaction; (B) an acid ester, or a salt thereof, of a polyadduct of an alkylene oxide with a phenol containing at least one alkyl, benzyl or phenyl group and (C) an aliphatic ester, containing at least 6 carbon atoms, of a mono- or di-carboxylic acid and which can be used in the fluorescent or optically brightening or preferably in the dyeing of polyester fibre materials in order to increase the rate of migration of fluorescent or optical brighteners or of disperse dyes.

Abstract: The invention relates to N-acyl-o-phenylenediamines of the formula ##STR1## wherein A is a colorless carbocyclic or heterocyclic aromatic radical and each of R.sub.1 and R.sub.2 independently is an alkyl, alkenyl or phenyl radical which is unsubstituted or substituted by non-chromophoric groups, but only one of R.sub.1 and R.sub.2 can be phenyl, and the ring B can also be substituted by non-chromophoric groups. The invention also relates to processes for the manufacture of these compounds, their use for whitening man-made organic material, their conversion into benzimidazolium compounds as well as stable, concentrated aqueous solutions of such compounds, processes for their manufacture and their use for whitening man-made organic material.

Abstract: The invention relates to a process for the production of .epsilon.-caprolactone having a purity of 99.9% and increased color and storage stability which comprises feeding .epsilon.-caprolactone, which has been made by reacting cyclohexanone with a solution of a percarboxylic acid, into a first distillation unit, operating at 0.1 to 500 mbars and drawing off as the top product a mixture consisting of .epsilon.-caprolactone and lower-boiling impurities, feeding the bottom product of said first distillation unit into a second distillation unit, operating at 0.1 to 500 mbars and then drawing off the pure .epsilon.-caprolactone as the top product. The .epsilon.-caprolactone is useful as an intermediate for the production of known useful compounds such as polyesterols which are subsequently converted to polyurethanes.

Abstract: A method for the separate discharge of the individual phase streams of a multiple component flow comprising a high viscosity slow flowing liquid or suspension and a gas flowing at at least 100 times faster with the volumetric ratio of the gas to the liquid being greater than 1:1. The multicomponent flow is transversely fed through an inlet and directly into a rotating helical channel for conveying liquid in one direction. The channel has a liquid outlet spaced from the inlet in the one direction and a gas outlet spaced from the inlet in the opposite direction. A gas shut-off is formed between the inlet and the liquid outlet so as to effect the discharge of gas through the gas outlet in the opposite direction during the conveying of the liquid by the helical channel to the liquid outlet in the one direction.

Abstract: The invention relates to sesomycin derivatives of Formula I, infra as well as processes for preparing said sisomycin derivatives. Also included in the invention are compositions containing said sisomycin derivatives and methods for the use of said compounds and compositions. The sisomycon derivatives are useful as antibacterial agents of broad activity and reduced side effects.

Abstract: The invention relates to a process for the preparation of N-substituted acrylamides of the general formula ##STR1## wherein Y denotes a bivalent straight - or branched chain radical with 2 to 30, preferably 2 to 18, and particularly 2 to 6 carbon atom-, preferably a group of the formula (Y.sub.1).sub.m -(Y.sub.2).sub.n -(Y.sub.3).sub.t, in whichY.sub.1, Y.sub.2 and Y.sub.3 each stands for an alkylene group or the radical of a cyclic organic ring system with 5 or 6 carbon atoms, and the sum of m, n, and t is 2 or 3, and R.sub.1 denotes hydrogen or the radical of an amine of the formula N(R.sub.2) (R.sub.3),whereinR.sub.2 and R.sub.3 stand for alkyl radicals with 1 to 4 carbon atoms, which method is characterized in that dihydracrylic acid amide of the general formula ##STR2## is transmitted with amines of the general formulaH.sub.2 N--(Y)--R.sub.1 (III)with elimination of ammonia and the resulting N-substituted .beta.

Abstract: Diagnostic agent for the detection of component materials, in liquids and method of production. The diagnostic agent includes a water resistant film composed of a film-former and contains a film opener in the form of fine, insoluble inorganic or organic particles.

Abstract: Imidazolyl-enol ethers of the formula ##STR1## in which Ar is an optionally substituted aryl radical,R is an alkyl group, andX is an oxygen atom or a methylene radial,or acid or metal salt addition products thereof which possess fungicidal properties.

Abstract: Novel herbicidal composition comprising(1) a herbicidally active acetanilide and(2) as an antidote against damage to crop plants, N,N-diallyl-dichloroacetamide of the formula ##STR1##

Abstract: The invention relates to 1-alka-2,4-dienyl-2-hydroxymethyl-3,4,5-trihydroxypiperidine compounds which are, inter alia, potent inhibitors for .alpha.- glucoside hydrolases and effect lipid absorption. Also included in the invention are methods for the manufacture of the said compounds, compositions containing said compounds and methods for the use of said compounds and compositions.

Abstract: Dimeric ketene of 1,2,4-triazole-3-carboxylic acid, of the formula ##STR1## and a process for its preparation by contacting 1,2,4-triazole-3-carboxylic acid with at least an equal molar amount of an acid halide in the presence of the small amount of N,N-disubstituted carboxylic acid amide.

Abstract: A catalyst comprising (A) a solid catalyst component obtained by reacting a titanium compound having a hydrocarbyloxy group with an organoaluminum compound in the presence of an ether to give a liquid material or to give a solid titanium component (a) which is solubilized by addition of a tetravalent titanium halide with or without an ether without separation or after separation from the reaction mixture, and heat treating the liquid material at a temperature of 70.degree. to 180.degree. C. with or without addition of a tetravalent titanium halide, and (B) an organoaluminum compound is effective for polymerization or copolymerization of olefins with high stereoregularity and has high polymerization activity.

Abstract: Residual materials which become available in metallurgy and contain oxides and volatilizable non-ferrous metals or compounds thereof are treated in a rotary kiln with solid carbonaceous reducing agents and are thus directly reduced in a high proportion to sponge iron whereas a substantial part of their non-ferrous metal content is volatilized. The solids discharged from the rotary kiln are sieved with a parting size of about 3 to 10 mm, depending on the feed grading of the residual materials and their disintegration characteristics, so that a major part of the unmagnetic material is included in the fine fraction. The coarse fraction is subjected to an electro-slag resistance process. The fine fraction is subjected to an electro-magnetic separation. The magnetic fraction is subjected to the resistance slag-refining process. The unmagnetic fraction is incorporated in and bonded to the feed mixture for the rotary kiln by a tumbling or pelletizing operation.

Abstract: For the radioimmunological determination of procollagen (type III) and procollagen peptide (type III) a certain amount of radioactively tagged procollagen (type III) or procollagen peptide (type III) and a highly specific anti-procollagen (type III) serum or anti-procollagen peptide (type III) serum are brought to reaction together with a sample of an unknown content of procollagen (type III) or procollagen peptide (type III), the formed antigen-antibody complex is separated, desirably by the addition of a second antibody against the highly specific antiserum, and the radioactivity of the complex or of the supernatant liquid is measured. Highly purified procollagen peptide (type III) suitable for this purpose is obtained by the degradation of tissue or body fluids with collagenase and purification by immune adsorption and chromatography.

Abstract: An electrochemical process for the production of benzanthrone by reaction of anthraquinone as, starting material, with glycerol, which process comprises reducing anthraquinone, which may additionally contain electronegative substituents, at the cathode in an electrolytic cell in acid medium, and simultaneously cyclizing the reduced semiquinone form with glycerol to produce the corresponding benzanthrone. The novel process affords numerous advantages compared with chemical reduction methods.

Abstract: A process for the preparation of di-n-propyl-acetic acid, comprising the steps of:A. catalytically reacting n-butyric acid with cleavage of carbon dioxide and water to form heptanone-4;B. hydrogenating heptanone-4 in teh presence of a catalyst to form heptanol-4;C. dehydrating heptanol-4 in the presence of an Al.sub.2 O.sub.3 catalyst to form heptene-3;D. hydroformylating heptene-3 in the presence of a rhodium complex compound as catalyst to form a mixture of 2-propyl pentanal and 2-ethyl hexanal;E. oxidizing the 2-propyl pentanal/2-ethyl hexanal mixture to form a mixture of di-n-propyl acetic acid and 2-ethyl hexanoic acid, andF. separating the mixture of di-n-propyl acetic acid and 2-ethyl hexanoic acid to recover pure di-n-propyl acetic acid.If desired, step B can be carried out without purification of the product of step A. Moreover, the dehydration of step C can be carried out without previous purification of the product of step B.

Abstract: Direct-positive photographic material which has at least one layer which contains a silver halide emulsion surface-fogged by chemical means or by exposure and, as a sensitizer, a trinuclear tetramethinecyanine dye in which all or some of the methine hydrogen atoms have been replaced by fluorine, chlorine, bromine or iodine atoms. The novel trinuclear tetramethinecyanine dyes impart an excellent blue-sensitivity to the photographic materials. Furthermore, high maximum densities and very low minimum densities are achieved.

Abstract: A basic copolymer whose main chain is cross-linked which comprises about 6 to about 98% by weight of recurring units of Formula (A) or (B), ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, each represents a hydrogen atom or a hydrocarbon group selected from the group consisting of C.sub.1-20 alkyl groups, C.sub.3-10 cycloalkyl groups, C.sub.3-8 alkenyl groups, C.sub.6-15 aryl groups, C.sub.7-12 arylalkyl groups and C.sub.1-15 aminoalkyl groups; and X is an acid radical, and about 2 to about 94% by weight of cross-linked units based on the total weight of the recurring units of Formula (A) or (B) and the cross-linked units and, if desired, up to about 92% by weight of units of a monoethylenically unsaturated monomer or a conjugated monomer based on the total weight of the recurring units of Formula (A) or (B), the cross-linked units and the units of the monoethylenically unsaturated monomer or the conjugated monomer.