Abstract: The invention relates to a process for the preparation of finely divided microcrystalline-to-amorphous metal and/or alloy powders and of metals and/or alloys in the form of colloidal solutions in organic solvents, which is process is characterized in that in inert organic solvents metal salts individually or in admixture are reacted with alkaline metal or alkaline earth metal hydrides which are maintained in solution by means of organoboron or organogallium complexing agents, or with tetraalkylammonium triorgano-borohydrate, respectively.

Abstract: Organic-solvent soluble magnesium hydrides or formulas ##STR1## are prepared by catalytically hydrogenating finely powdered magnesium, optionally in the presence of a magnesium halide, in an organic solvent in the presence of their MgH.sub.2 -free counterparts in whichQ is an alkyl, alkenyl, alkoxy, dialkylamino, aralkyl, aryl or diarylamino group, each with up to 18 carbon atoms,R is an alkenyl, aralkyl or aryl group, each with up to 18 carbon atoms,X is chlorine, bromine, or iodine, ##STR2## is a chelating ligand, E is --CH.sub.2, --N(R)-- or --O--,is an alkylene radical of the formula --(CH.sub.2).sub.p,D is a dialkylamino, diarylamino or alkoxy group, each with up to 18 carbon atoms,M is aluminum or boron,m is 1, 2, or 3, and1<n.ltoreq.50.

Abstract: Microporous membranes for the separation of gas and liquid mixtures. The new membranes show a temperature stability up to 500.degree. C. and a gas separation with separation factors better than the Knudsen limit. Continuous microporous inorganic membranes of any desirable thickness can be prepared by e-beam evaporation of metal oxides on a support membrane, which has substantially larger pores than the metal oxide membrane. It is advantageous when the support membrane consists of the same material as the microporous membrane. The membranes are of porous structure with a narrow pore size distribution of pores, where the majority of the pores have diameters smaller than 1 nm. The membranes can be used in all areas of gas and liquid separation, where the selective separation of smaller molecules from mixtures is desired (f.e.

Abstract: Disclosed is a process for preparing acicular non-sintered iron metal pigments for magnetic signal recording, having a high storage density, high saturation magnetization and remanence, the coercive field strength of which at a given crystallite size of the starting material is low and is increased as desired by subsequent annealing. The preparation of said iron metal pigments is effected by reduction of iron oxide compounds with metal hydrides of metals of the Groups I or II of the Periodic Table of Elements in organic solvents, with the metal hydrides being solvatized with a carrier in the form of a carrier complex.

Abstract: Organic-solvent soluble magnesium hydrides of the formulas(MgH.sub.2).sub.n. MgQ.sub.2 (II)(MgH.sub.2).sub.n. RMgX (III) ##STR1## are prepared by catalytically hydrogenating finely powdered magnesium, optionally in the presence of a magnesium halide, in an organic solvent in the presence of their MgH.sub.2 -free counterparts in whichQ is an alkyl, alkenyl, alkoxy, dialkylamino, aralkyl, aryl or diarylamino group, each with up to 18 carbon atoms,R is an alkenyl, aralkyl or aryl group, each with up to 18 carbon atoms,X is chlorine, bromine, or iodine,--E D.fwdarw. is a chelating ligand,E is --CH.sub.2, --N(R)-- or --O--,is an alkylene radical of the formula --(CH.sub.2).sub.p,D is a dialkylamino, diarylamino or alkoxy group, each with up to 19 carbon atoms,M is aluminum or boron,m is 1, 2, or 3, and1<n.ltoreq.50.

Abstract: Polyacrylamide gel filled silica capillaries of improved performance in electrophoresis are produced bya) leaching the capillary with a solution of a basic reagent;b) binding a substituted, double bond-containing silane to the silica surface of the capillary;c) binding an acrylamide to the treated surface and polymerizing the acrylamide to a linear polyacrylamide, eliminating electroosmotic flow and avoiding chemical bonding of the gel during its subsequent formation; andd) contacting the capillary with a solution of acrylamide/bisacrylamide and effecting crosslinking polymerization in the presence of a radical polymerization starter to form a gel.

Abstract: Disclosed are new 1,3-dioxenones having the formulae ##STR1## in an optically pure state, a process for preparing same and the use thereof.

Abstract: Intermetallic compounds and hydrides thereof, characterized in that they have been prepared by reacting hydrides of the elements of the main groups I, II, III and IV of the Periodic Table, magnesium hydridehalides or magnesium dialkyls having the general formula MgR.sub.2 (R=alkyl) in a solvent with bisallyl metal compounds of the metals of the subgroup VIII of the Periodic Table or of zinc or with the homologues of the bisallyl compounds of said metals, and processes for preparing said compounds.

Abstract: The .gamma.-radiation initiated formation of a polyacrylamide gel for the simplified production of gel filled fused silica capillaries for capiliary gel electrophoresis. The performance and stability of such gel filled capillaries are as good as of those obtained by methods known in the art.

Abstract: The invention relates to polymers and oligomers characterized in that they have been prepared from .alpha.-olefin monomers or mixtures thereof and the distances between the methyl branching paints are controllable by the selection of the .alpha.-olefins and to a process for preparing said novel polymers and oligomers.

Abstract: Organic-solvent soluble magnesium hydrides of the formulas ##STR1## are prepared by catalytically hydrogenating finely powdered magnesium, optionally in the presence of a magnesium halide, in an organic solvent in the presence of their MgH.sub.2 -free counterparts in whichQ is an alkyl, alkenyl, alkoxy, dialkylamide, aralkyl, aryl or diarylamide group, each with up to 18 carbon atoms,R is an alkenyl, aralkyl or aryl group, each with up to 18 carbon atoms,X is chlorine, bromine, or iodine,--E D.fwdarw. is a chelating ligand,E is --CH.sub.2, --N(R)-- or --O--,is an alkylene radical of the formula --(CH.sub.2).sub.p,D is a dialkylamide, diarylamide or alkoxy group, each with up to 18 carbon atoms,M is aluminum or boron,m is 1, 2, or 3, and1<n.ltoreq.50.

Abstract: The invention relates to organoaluminum electrotyles for the electrolytic deposition of aluminum which are characterized in that they consist of KF . 2 AlEt.sub.3 (A), KF . 2 AlMe.sub.3 (B) and MF . 2 Al(iBu).sub.3 (C), wherein M=sodium or potassium or a mixture of both, in a molar ratio of A:B:C of from 2:1:1 to 7:1:1. The organoaluminum electrolytes are dissolved in from 2 to 4.5 moles, based on the amount of MF employed, of an aromatic hydrocarbon which is liquid at 0.degree. C. The invention further relates to a process for the electrolytic deposition of aluminum on electrically conductive materials by using said electrolytes.

Abstract: The reversible preparation of active magnesium hydride MgH.sub.2 by reaction of magnesium with molecular hydrogen at a pressure of from 1 to 2 bar and at a temperature of from 150.degree. C. to 250.degree. C. The improvement comprises producing the magnesium by thermally decomposing a magnesium-containing compound at a pressure from 10.sup.-6 to 1 bar and in the absence or presence of an organic aprotic solvent, the magnesium obtained by the decomposition being isolated as a highly reactive powder.

Abstract: Disclosed is a process for preparing acicular non-sintered iron metal pigments for magnetic signal recording, having a high storage density, high saturation magnetization and remanence, the coercive field strength of which at a given crystallite size of the starting material is low and is increased as desired by subsequent annealing. The preparation of said iron metal pigments is effected by reduction of iron oxide compounds with metal hydrides of metals of the Groups I or II of the Periodic Table of Elements in organic solvents, with the metal hydrides being solvatized with a carrier in the form of a carrier complex.

Abstract: Disclosed are new 1,3-dioxenones having the formulae ##STR1## in an optically pure state, a process for preparing same and the use thereof.

Abstract: The invention relates to organoaluminum electrolytes for the electrolytic deposition of high-purity aluminum, which are characterized in that they contain mixtures of organoaluminum complex compounds of the type MF.2 AlR.sub.3 (A), wherein M represents potassium or mixtures of K with a maximum of about 15% by mole of sodium, as well as trialkylaluminum AlR.sub.3 (B) which has not been complexed to an alkali metal fluoride in a molar ratio of A:B of from 4:0.6 to 4:2, as well as a polyfunctional Lewis base of the type R'-OCH.sub.2 CH.sub.2 -OR" (C) in a molar ratio of B:C of from 1:0.5 to 1:1. The organyl radicals R in A are ethyl groups (Et), methyl groups (Me) and iso-butyl groups (iBu) in a molar ratio of Et:Me:iBu as 3:m:n, wherein m and n are numerical values of between 1.1 and 0 and the sum (m+n) is from 0.75 to 1.4. As the solvent for said electrolytes there are used from 3 to 4.5 moles, relative to the amount of alkali metal fluoride employed, of an aromatic hydrocarbon which is liquid at 0.degree. C.

Abstract: A process for the preparation of polyolefins, polydienes and copolymers thereof by polymerization in solvents, liquid monomers or in the gaseous phase at a temperature between -20.degree. C. and 150.degree. C. using magnesium hydride, a halogen-containing transition metal compound of Group IV and an aluminium alkyl compound, characterized in that the polymerization is carried out in the presence of a catalyst system consists of(a) a magnesium compound having the general formulaMgH.sub.xwherein x is a number between 1 and 2, and more specifically 2; (b) a compound of a transition metal of Group IV having the general formulaMeHal.sub.4wherein Me is a transition metal, more specifically titanium, and Hal is a halogen, more specifically chlorine; and (c) an aluminium alkyl compound having the general formulaAlR.sub.n Hal.sub.(3-n)wherein R is a C.sub.1 -C.sub.6 alkyl residue, more specifically ethyl, Hal is a halogen, more specifically chlorine, and n is a number of from 1 to 3, and preferably 3.

Abstract: An apparatus for conducting split sampling gas chromatography of a liquid sample comprisinga vaporization chamber to receive a needle of a syringe,a first tube to receive the needle,a second tube directly adjacent the first tube and running substantially along the entire length of the first tube, the second tube accommodating a downward flow of cooling gas,a third tube surrounding the first tube and the second tube, thereby creating a annular space between the third tube and the first tube, the annular space accommodating an upward flow of gas exiting the third tube.

Abstract: A process for the production of hydrides of magnesium, comprising reacting magnesium with hydrogen in the presence of magnesium.

Abstract: Disclosed are electrolytes and processes for the metal-plating of metallic materials, and more specifically low-alloy high-strength steels, which processes are characterized in that adhesion-bonding layers of iron, iron and nickel, nickel, cobalt, copper or alloys of said metals or Sn-Ni alloys are electrodeposited on said metallic materials from non-aqueous electrolytes, and then aluminum is electrodeposited thereon in a per se known manner.