Patents Assigned to Lithium Corporation of America
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Patent number: 4206191Abstract: A low temperature method of preparing finely divided lithium amide. A mixture is first formed of bulk pieces of lithium metal with a catalyst such as active metallic cobalt in an inert liquid aromatic hydrocarbon, such as toluene, at about 0.degree. C. to about -60.degree. C. Anhydrous liquid ammonia is then added, aided by stirring, the lithium metal dissolving, two immiscible phases forming, one a so-called lithium-ammonia bronze solution being the top phase, and the toluene being the bottom phase. The formation of the lithium amide is then effected by raising the temperature under conditions of stirring, hydrogen and excess ammonia being liberated and the lithium amide, generally light grey in color, is formed which separates out in a very finely divided solid state, as a slurry in the toluene, and is recovered.Type: GrantFiled: December 18, 1978Date of Patent: June 3, 1980Assignee: Lithium Corporation of AmericaInventors: Robert C. Morrison, Ricardo O. Bach
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Patent number: 4069267Abstract: Stable diorganomagnesiums are prepared which are soluble in acyclic liquid hydrocarbons and represent novel and highly useful compositions. They are prepared, for instance, by forming a mixture of magnesium metal powder in an acyclic liquid hydrocarbon to which are added a C.sub.1 -C.sub.4 n-alkyl halide, such as n-butyl chloride, and a n-alkyl halide containing at least 6 carbon atoms, such as n-octyl chloride, and effecting reaction to convert them to their corresponding dialkylmagnesiums. Then, a secondary or tertiary organolithium compound, such as sec- or tert-butyllithium, is added, in the form of a solution in an acyclic liquid hydrocarbon, and the byproduct halide salts which were formed and are present in the reaction mixture are separated from the resulting stable solution of the diorganomagnesium complex by filtration or by equivalent separation procedures.Type: GrantFiled: October 27, 1976Date of Patent: January 17, 1978Assignee: Lithium Corporation of AmericaInventors: Conrad W. Kamienski, Bobby Joe McElroy, Ricardo O. Bach
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Patent number: 4049732Abstract: Continuous process and apparatus for the preparation of normally liquid telomers derived from the reaction of a liquid telogen, such as toluene, with a polymerizable monomeric taxogen in gaseous form, such as 1,3-butadiene monomer, in the presence of an organometal telomerization initiator, such as a mixture or complex of n-butyllithium and potassium t-butoxide, wherein a controlled stream of the gaseous taxogen is continuously passed through fine apertures, as in a screen, into the liquid telogen containing said initiator disposed in a reaction zone in a reaction chamber, whereby to produce the normally liquid telomer, and, thereafter said telomer is continuously passed through a conduit into an additional reaction zone or zones and reacted in similar manner with additional gaseous taxogen until the desired concentration of liquid telomer is produced.Type: GrantFiled: September 22, 1976Date of Patent: September 20, 1977Assignee: Lithium Corporation of AmericaInventors: Ricardo O. Bach, Robert C. Morrison
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Patent number: 4041088Abstract: Recirculation process and apparatus for the preparation of normally liquid telomers derived from the reaction of a gaseous taxogen with a solution in a liquid telogen, such as toluene, of an organometal telomerization initiator, such as a mixture or complex of n-butyllithium and potassium t-butoxide, in a container, wherein a controlled stream of the gaseous taxogen is continuously passed through fine apertures, as in a screen, into the liquid telogen solution of said initiator while said telogen solution is passed from said container through a reaction zone in a reaction chamber, whereby to produce the normally liquid telomer, and, thereafter, said liquid telomer is continuously returned to commingle with the solution in the container of said telogen and initiator, and continuously recirculating the contents of said container into said reaction zone for further reaction with said gaseous taxogen until the desired concentration of liquid telomer is produced.Type: GrantFiled: November 8, 1976Date of Patent: August 9, 1977Assignee: Lithium Corporation of AmericaInventors: Ricardo O. Bach, Robert C. Morrison
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Patent number: 4039593Abstract: Preparation of hydroxy-terminated conjugated diene polymers, particularly polybutadienes, by capping of organodilithium- and organopolylithium- terminated conjugated diene polymers or polybutadienes with lower alkylene oxide or epoxide capping agents in the presence of certain potentiating agents or catalysts exemplified particularly by small proportions of N,N,N.sup.1, N.sup.1 -tetramethylenediamine (TMEDA).Type: GrantFiled: September 30, 1976Date of Patent: August 2, 1977Assignee: Lithium Corporation of AmericaInventors: Conrad W. Kamienski, Robert C. Morrison
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Patent number: 4006095Abstract: Preparation of stable solutions of aluminum hydride in liquid hydrocarbons such as benzene or toluene by a one-step reaction between, for instance, 1 mole of aluminum chloride with 3 moles of lithium hydride in said liquid hydrocarbon medium and in the presence of a weak ether base such as dimethyl ether, an aliphatic tertiary amine such as trimethylamine being added.Type: GrantFiled: March 31, 1972Date of Patent: February 1, 1977Assignee: Lithium Corporation of AmericaInventors: Doyt K. Hoffman, Ricardo O. Bach, Conrad W. Kamienski
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Patent number: 4006187Abstract: Process of metalating benzene containing alkyl, alkoxy or dialkylamino substituents, such as toluene, anisole and N,N-dimethyl-aniline, with an organolithium compound such as sec-butyllithium adducts with styrene, in the presence of a tertiary alkyl amine (containing no methyl groups) such as triethylamine, the ratio of lithium in said organolithium compound to the tertiary alkyl amine being 1 gram atom of the lithium to from about 0.25 to about 4 gram moles of the tertiary alkyl amine.Type: GrantFiled: October 6, 1971Date of Patent: February 1, 1977Assignee: Lithium Corporation of AmericaInventors: Conrad W. Kamienski, Robert C. Morrison, Kenneth R. Martin
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Patent number: 3994741Abstract: Production of building bricks utilizing as an ingredient thereof, advantageously in substantial or in major proportion of brick-forming compositions or mixtures of ingredients, ore residues obtained from the extraction of lithium values from beta-spodumene. The said residues so utilized result from a process in which beta-spodumene is subjected to a sulfuric acid roast, the lithium values are then extracted from the acid-roast product by an aqueous extraction liquid, followed by neutralization with lime or limestone, and separation of the formed lithium sulfate by filtration, leaving the ore residues which are then utilized in admixture with other ingredients to produce bricks possessing excellent strength and other desirable properties.Type: GrantFiled: March 26, 1975Date of Patent: November 30, 1976Assignee: Lithium Corporation of AmericaInventors: Gilbert C. Robinson, Arthur S. Gillespie, Jr., Ricardo O. Bach
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Patent number: 3954894Abstract: Preparation of novel organotrilithium initiators, which are soluble in hydrocarbon media, from disubstituted vinylaromatic compounds and mono- and dilithium organic compounds, said initiators being useful in the polymerization of conjugated dienes and copolymerization of these with vinylaromatic compounds.Type: GrantFiled: May 18, 1973Date of Patent: May 4, 1976Assignee: Lithium Corporation of AmericaInventors: Conrad W. Kamienski, Robert C. Morrison