Abstract: Novel ethers of organic compounds containing chiral atoms of the formula ##STR1## wherein A is a hydrocarbonated chain of 1 to 10 groups, the said chain containing one or more heteroatoms, one or more unsaturations, the assembly of the groups constituting the chain may represent a mono- or polycyclic system, including a system of the spiro or endo type, the chain A can contain one or more chiral atoms or the lactone moiety can present a chirality due to the dissymetric spatial configuration of the whole of the molecule and Z is selected from the group consisting of primary, secondary or tertiary alcohol moiety containing at least an asymetric carbon atom, a phenol moiety substituted comprising at least one asymetric carbon atom and an substituted alcohol or phenol moiety with a chirality due to the dissymetric spatial configuration of the whole of the molecule, with the proviso Z is not (R) or (S) .alpha.

Abstract: In the process for the preparation of high concentration, low-viscosity liquid pigment pastes comprising mixing pigments, a substantially non-volatile liquid organic media, a suspension assistant, and, optionally, fillers, the improvement consisting of using acidic reaction products of the reaction of:(A) unsaturated dicarboxylic acid compounds, and(B) an unsaturated ester of a dicarboxylic acid, which reaction product is produced by heating said component A and said component B in a weight ratio of 1:7 to 1:35 for from 1 to 25 hours at a temperature in the range of 200.degree. to 250.degree., as said suspension assistant;as well as the high concentration, low-viscosity pigment pastes and solutions of said acidic reaction products in organic liquid media.

Abstract: An asbestos-free friction material useful for brake linings, clutches, etc. comprising 5 to 25% by weight of a hardenable binder or binder mixture, 1 to 70% by weight of a reinforcing fibrous material and conventional additives, the said reinforcing material consisting essentially of 2.5 to 12% by weight of aramide fibers, 6 to 25% by weight of mineral fibers and 16 to 36% by weight of steel fibers and optionally 5 to 20% by weight of powdered mica.

Abstract: A horizontal diaphragmless bipolar electrolyzer comprising a horizontal housing made of electrically insulated material, an anodic or (cathodic) plate at one end of the housing provided with a plurality of blade shaped electrodes vertically arranged along the housing axis, a cathodic (or anodic) plate at the opposite end of the housing provided with a plurality of blade shaped electrodes vertically arranged along the housing axis, at least one bipolar electrode element with blade shaped anodes and cathodes vertically arranged on opposite sides thereof on the housing axis to interleaf with the electrodes of the next unit, means for introducing fresh electrolyte at one end of the housing, means for removing treated electrolyte at the opposite end, a space above the electrode assembly for gas disengagement and removal, a space below the electrode assembly for solid particles collection and means for impressing an electrolysis current thereon.

Abstract: Glycidyl ethers of monohydric or polyhydric phenols of high purity are obtained if hydrogen halide is eliminated from halohydrin ethers of the phenols in aqueous alkalis in the presence of one or more onium compounds selected from quaternary ammonium compounds having at least one aliphatic C.sub.4-22 hydrocarbon radical, quaternary phosphonium compounds and tertiary sulphonium compounds as catalyst, or in the presence of those compounds which form in the reaction medium in situ, before the addition of the alkali, such onium compounds from the halohydrin ethers together with tertiary amines, tertiary phosphines or thioethers. In comparison with the known processes, the rate of dehydrohalogenation can thereby be significantly increased as a result of which an increase in production is achieved. Moreover, significantly purer reaction products are obtained by the avoidance of side reactions.

Abstract: The invention is directed to a perfumery composition consisting essentially of at least one substituted 2-(1-methylbutyl)-1,3-dioxane and customary constituents and to the use of such a perfumery composition to impart a pleasant odor to a product.

Abstract: A recirculating ball bearing for longitudinally moveable mounting of shafts comprising an outer race sleeve and a concentrically disposed guide sleeve with a plurality of ball races distributed over its circumference, each of the said ball races consisting of two straight race sections extending essentially parallel to the bearing axis and two semi-circular race sections connecting the two straight race sections and a plurality of balls guided in the races under load in only one straight race section and under no load in the remainder of the race section, the improvement comprising providing at least one elastically yielding area in the said remainder of the race section.

Abstract: Process for the manufacture of hardenable copolymers by the polymerization of unsaturated esters with unsaturated polymerizable monomers containing no free COOH groups, wherein an olefinically unsaturated diester containing OH groups is used as the unsaturated ester, said diester being obtained by reacting olefinically unsaturated dicarboxylic acids or the anhydrides thereof with a polyhydric alcohol and a monoepoxide compound in one or more steps, characterized in that the copolymerization of the diesters with monomers which contain no free COOH groups is carried out in the presence of copolymerizable monomers containing free COOH groups, and the use of the copolymers as hardenable binders for lacquers and/or coating compositions.

Abstract: This invention relates to a process for preparing bleach activator granulates comprising from about 90 to 98 percent by weight of bleach activator and from about 10 to 2 percent by weight of granulating adjuvant, based on the weight of the anhydrous components, which comprises the steps of:(a) mixing powdered bleach activator which has a mean particle size of from about 0.01 to 0.8 mm with from about 50 to 100 percent by weight of the total granulating adjuvant to be used, which granulating adjuvant comprises a water-soluble cellulose ether, starch, or starch ether in the form of a free-flowing powder having a mean particle size of from about 0.01 to 0.8 mm;(b) moistening the mixture from step (a) with water or an aqueous solution containing the remainder of the granulating adjuvant in a solution of from about 0.

Abstract: In a process for the production of an aqueous alkaline suspension of low-grit, crystallized zeolitic sodium aluminosilicate of the smallest particle size having the composition0.9 to 1.1 Na.sub.2 O. 1 Al.sub.2 O.sub.3 . 1.8 to 2.5 SiO.sub.2with a water content depending on the degree of drying, which contains at least 99.8% by weight of a particle size of less than 25 .mu.m and has a high cation exchange capability, comprising crystallization of an aqueous alkaline suspension of an x-ray-amorphous sodium aluminosilicate, said suspension having a composition corresponding of the molar ratios of 1.5 to 5 Na.sub.2 O:1 Al.sub.2 O.sub.3 :1 to 4 SiO.sub.2 :40 to 400 H.sub.

Abstract: This invention is directed to bis-(2,4-diaminophenoxy)-alkanols and salts thereof and to compositions of the developer-coupler type for the dyeing of hair, consisting essentially of bis-(2,4-diaminophenoxy)-alkanols or salts thereof as coupling components and, as developer components, the conventional components used in oxidation dyes.

Abstract: A process for the partial reduction of C21-steroid carboxylic acids and their esters to C21-steroid alcohols and new C21-steroid alcohols.DELTA.4,17(20)-C21-steroid carboxylic acids optionally containing further double bonds in the 1- and/or 9(11)-position and their esters corresponding to general formula I below ##STR1## in which R represents hydrogen or a hydrocarbon radical and A represents hydrogen, hydroxyl or, together with the C-atom substituted by A, a carbonyl group and in which, finally, the substituent A may even be replaced by an additional olefinic double bond in the 9(11)-position, are reacted with diisobutyl aluminium hydride without the A-ring in the steroid skeleton being blocked in such quantities that all the oxygen-containing functional groups are reduced to the hydroxyl group. The aluminium-containing intermediate reaction product is then subjected to the selective Oppenauer oxidation to form the 3-keto compound. The 3-oxo-C21-steroid alcohols may be obtained in high yields in this way.

Abstract: The invention is directed to cephalosporins of the formula ##STR1## and the tautomers thereof, and, when E is a hydrogen atom, the pharmacologically acceptable salts thereof with inorganic or organic bases.

Abstract: The decapeptide of the formulaH-Ser-Asp-Leu-Pro-Gln-Thr-His-Ser-Leu-Gly-OHand the use thereof as hapten, tracer or antibody.

Abstract: Poly-.alpha.-olefins, particularly polyethylene, having a broad molecular weight distribution, can be prepared discontinuously or continuously in the gaseous phase or in hydrocarbons as dispersants, at a pressure of from 2 to 40 bar and at a temperature of from 60.degree. C. to 100.degree. C., optionally with the use of hydrogen as a molecular weight regulator in the presence of a catalyst solid which is manufactured in two reaction steps, from a primary solid containing magnesium and chlorine which has been reacted, in a reaction stage A, with peroxy compound(s) and with halogen-containing metal compounds of elements of IV and/or V sub-group(s) of the Mendeleev Periodic Table and, in reaction stage B, with halogen-containing metal compounds of elements of IV and/or V subgroup(s) of the Mendeleev Periodic Table, and/or metal organyl compounds of metals of the II and/or III main group(s) of the Mendeleev Periodic Table.

Abstract: This invention relates to a composition for the sustained release of dipyridamole which comprises (i) spheroid particles comprised of dipyridamole or crystallized salts thereof and pharmacologically acceptable acid or acid substance, and (ii) a coating surrounding said spheroid particles, said coating being comprised of from about 50 to 100 percent by weight of acid-insoluble lacquers soluble in intestinal juices and from about 0 to 50 percent by weight of lacquers insoluble in gastric and intestinal juices and said coating being present in an amount of from about 3 to 30 percent by weight, based on the weight of the spheroid particles, and to the preparation of such a composition.

Abstract: This invention relates to the preparation of sodium metasilicate. More particularly, this invention relates to a process for the preparation of solid, crystalline, substantially anhydrous sodium metasilicate which comprises the steps of:(a) reacting an SiO.sub.2 -containing material with a concentrated aqueous solution of sodium hydroxide in an SiO.sub.2 to Na.sub.2 O molar ratio of from about 1.2:1 to 1:1.2 under elevated pressure and at an elevated temperature, to form a sodium metasilicate suspension;(b) filtering the suspension from step (a) to obtain a filter cake and filtrate;(c) crushing the filter cake from step (b) at elevated temperature;(d) removing water from the crushed filter cake to recover substantially anhydrous sodium metasilicate;(e) concentrating the filtrate from step (b); and(f) returning the concentrated filtrate from step (e) to the reaction mixture of step (a).

Abstract: In the process for reducing the residual vinyl chloride monomer in an aqueous polyvinylchloride dispersion comprising the steps of depressurizing an aqueous polyvinylchloride dispersion containing emulsifiers and/or protective colloids as obtained from pressure polymerization in a polymerization zone, subjecting the same to a vacuum with heating, passing the gasses and foam of liquid constituents resulting from said depressurizing step and said vacuum treating step to a confined space wherein said gasses are separated from liquid constituents, and recovering an aqueous polyvinylchloride dispersion having a reduced residual vinyl chloride monomer content, the improvement consisting in passing said gasses and foam of liquid constituents to a confined space having a volume of not more than 331/3% of the volume of said polyvinylchloride dispersion and returning said foam of liquid constituents to said polyvinylchloride dispersion in said polymerization zone through an elongated zone of small cross-section below s

Abstract: Poly-.alpha.-olefins, particularly polyethylene, having a broad molecular-weight distribution, can be prepared in the presence of a catalyst solid which is manufactured in two reaction steps, from a primary solid containing magnesium and chlorine which has been reacted, in a reaction stage A, with secondary and/or tertiary alcohols and with halogen-containing metal compounds of elements of IV and/or V sub-group(s) of the Mendeleev Periodic Table, and, in a reaction stage B, with halogen-containing metal compounds of elements of IV and/or V sub-group(s) of the Mendeleev Periodic Table and metal organyl compounds of metals of the II and/or III main group(s) of the Mendeleev Periodic Table. The sequence of the reaction stages A and B is not critical for the success of the process according to the invention.

Abstract: Storage rack for assemblages of nuclear fuel elements of polygonal or circular cross-section comprised of a plurality of storage chambers in the form of a hollow stem having a cross-section adapted to that of the assemblages to be stored, said storage chambers being side by side in a regular disposition and each separated from the other by a regular spacing, each chamber being comprised of one or more rectangular metal plates formed by bending or melted metal sealing into a hollow stem having walls disposed to form a prismatic or cylindrical surface and adapted to contain said assemblages and being supplied at the bottom with a base capable of supporting said assemblage, wherein the metal plates forming said chamber protrude outwardly from said prismatic or cylindrical surface on at least two locations of the chamber contour, forming at these locations projections on which adjacent chambers are applied and attached, the assembly of chambers being without cross-pieces or coupling or packing pieces, and forming