Abstract: Stable liquid hydrocarbon-soluble novel magnesium dialkoxide compositions useful as or in the preparation of polymerization catalysts and initiators for the polymerization of alpha-olefins and diolefins are prepared, for instance, by reacting certain organomagnesium compounds in liquid hydrocarbon solvents with (a) aliphatic, cycloaliphatic or acyclic beta- and gamma-alkyl-substituted C.sub.5 -C.sub.18 monohydric secondary and tertiary alcohols; or (b) mixtures of (a) with beta- and/or gamma-alkyl-unsubstituted C.sub.3 -C.sub.18 aliphatic secondary or tertiary alcohols; or (c) mixtures of (a) with C.sub.1 -C.sub.18 aliphatic primary linear alcohols. Such dialkoxides, and complexes thereof, soluble in hydrocarbon or chlorinated hydrocarbon solvents, can be reacted with triorganoaluminum compounds such as, for instance, TIBAL, organolithium, or organopotassium compounds, e.g., alkyllithiums, or alkali metal alkoxides.

Abstract: Stable liquid hydrocarbon-soluble novel magnesium dialkoxide compositions, and complexes thereof with, for example, n-alkyllithiums, organomagnesiums, and the like, useful as or in the preparation of polymerization catalysts and initiators for the polymerization of alpha-olefins and diolefins, which are prepared, for instance, by reacting certain organomagnesium compounds in liquid hydrocarbon solvents with (a) aliphatic 2-alkyl-substituted C.sub.4 -C.sub.12 monohydric primary alcohols, or (b) mixtures of (a) with 2-alkyl-substituted C.sub.3 -C.sub.12 aliphatic secondary or tertiary alcohols, or (c) mixtures of (a) with C.sub.1 -C.sub.12 aliphatic primary linear alcohols. Such dialkoxides and complexes thereof are commonly advantageously prepared in the presence of minor amounts of organoaluminum, organolithium or organopotassium compounds, e.g., trialkylaluminums, alkyllithiums or potassium dialkoxides. An illustrative example of the novel magnesium dialkoxides is 2-methyl-1-pentyloxide.

Abstract: A process for the manufacture of esters of formula ##STR1## in which R.sup.1 signifies methyl or ethyl and R.sup.2 and R.sup.3, independently from one another, signify hydrogen or C.sub.1-4 -alkyl,is described. The process comprises treating a diketo ester of the formula ##STR2## in which R.sup.1 to R.sup.3 have the above significances, with the combination ofCuX.sub.2 and MeX.sub.n IIIin which Me signifies an alkali metal or alkaline earth metal ion, X signifies halogen and n corresponds to the valency of the metal ion.Compounds I are known odorants.The reaction involved is thus an aromatization of the starting material.

Abstract: Improved 1-step process for the preparation of thixotropic overbased calcium sulfonate complex greases or thickened compositions containing calcium sulfonate as a dispersing agent and containing calcium carbonate in the form of calcite crystals in extremely finely divided form colloidally dispersed in said greases or thickened compositions.

Abstract: High performance modified high metal ratio overbased calcium complex greases which contain colloidally dispersed therein calcium carbonate in the form of crystalline calcite, and which greases include minor proportions, by weight, of (a) a calcium borate and (b) a calcium soap of a soap-forming aliphatic monocarboxylic acid containing at least 12 carbon atoms, exemplified by 12-hydroxystearic acid, said (a) and (b) ingredients being essentially homogeneously distributed through said calcium complex grease.

Abstract: Stable, hydrocarbon-soluble organobarium-, organocalcium-, and organostrontium-containing polymerization initiators are prepared by reacting certain calcium, barium or strontium alkoxides with organolithium, diorganomagnesium or triorganoaluminum compounds and combinations thereof. By way of illustration, the barium alkoxides soluble in hydrocarbon or chlorinated hydrocarbon solvents are prepared by reacting a suspension of barium amide in a hydrocarbon or a chlorinated hydrocarbon solvent with stoichiometric quantities of certain alcohols, alone or in the presence of chelating tertiary di- or polyamines. Alcohols suitable for the preparation of hydrocarbon- or chlorinated hydrocarbon-soluble barium alkoxides are C.sub.4 -C.sub.12 aliphatic and cycloaliphatic alcohols possessing alkyl branches at the one or two-positions, or mixtures of such alcohols. Other suitable alcohols are 2-alkoxy-1-alkanols and .gamma.-alkoxy-poly(ethyleneoxy)-1-ethanols.

Abstract: A chain link, comprising a rod of substantially circular cross-section formed into a generally Omega shape. The link includes a transverse bight portion, a pair of side portions offset below the bight portion, a pair of curved leg portions, and a pair of foot portions splaying transversely outward from the ends of the leg portions.

Abstract: A method of contraception comprising placing in the uterine cavity a contraceptively effective amount of chitosan, advantageously in a carrier, and retaining the chitosan in the uterine cavity for a prolonged period of time to kill or inactivate mammalian spermatazoa.

Abstract: Hydrocarbon, especially aliphatic and/or cycloaliphatic hydrocarbon, solvent solutions of complexes of sec-butyllithium and ethyllithium, exemplified by (a) equimolar solutions of sec-butyllithium and ethyllithium in n-hexane or cyclohexane, (b) 35 mole % sec-butyllithium and 65 molar % ethyllithium in n-hexane or cyclohexane, and (c) 1 mole % sec-butyllithium and 3 mole % ethyllithium in n-hexane or cyclohexane. The thermal stability of the complexes of sec-butyllithium and ethyllithium in the solutions thereof in hydrocarbon solvents has been found to be outstanding. The hydrocarbon solvent solutions, especially where said solvents are aliphatic or cycloaliphatic, have marked advantages over conventionally used hydrocarbon solvent solutions of sec-butyllithium as catalysts or initiators in polymerization reactions, telomerization reactions, metalation reactions, halogen-metal interchange reactions, and in the preparation of magnesium alkyls and other organometallics.

Abstract: A vaporizing apparatus includes a vaporizing chamber for producing vapors from a hydrocarbon fuel which are drawn into a mixing chamber by pressurized air, and the mixture is delivered to a manifold where a portion is return to the vaporizing chamber and ignited for heating and vaporization, a safety control system sensing the presence of a flame and the temperature of the vaporization chamber and interrupts flow of vapors when the flame is absent or the temperature is outside prescribed limits. A starter burner which uses the hydrocarbon fuel as a combustible material for preheating the vaporizing chamber is also automatically shut off by the control system when the vaporization chamber reaches the operating temperature. The starter burner includes a mixing valve and a combustion chamber with mixing chamber therebetween for drawing ambient air into the mixture of pressurized air and combustible material.

Abstract: Hydrocarbon, especially aliphatic and/or cycloaliphatic hydrocarbon, solvent solutions of complexes of n-butyllithium and ethyllithium, exemplified by (a) equimolar solutions of n-butyllithium and ethyllithium in n-hexane or cyclohexane, (b) 36 molar % n-butyllithium and 64 mole % ethyllithium in n-hexane or cyclohexane, and (c) 25 mole % n-butyllithium and 75 mole % ethyllithium in n-hexane or cyclohexane. The thermal stability of the complexes of n-butyllithium and ethyllithium in the solutions thereof in hydrocarbon solvents has been found to be outstanding. The hydrocarbon solvent solutions of said complexes, especially where said solvents are aliphatic or cycloaliphatic, have marked advantages over conventionally used hydrocarbon solvent solutions of n-butyllithium as catalysts or initiators in polymerization reactions, telomerization reactions, metalation reactions, halogen-metal interchange reactions, and in the preparation of magnesium alkyls and other organometallics.