Fmc Corporation

Lithium Corporation of America

Fmc Corporation, Lithium Division

Conrad W Kamienski

James Anthony Schwindeman

Robert C Morrison

John F Engel

B Troy Dover

Randy W Hall

Eric J Granger

Roderic Paul Quirk

Robert James Letchford

Vijay C Mehta

Terry L Rathman

Robert S Wedinger

R Thomas Currin, Jr

Ricardo O Bach

Bobby Joe McElroy

George Robert Sandor

Sharon Bergmann Smith

Kent N Smith

Doyt K Hoffman

Kenneth R Martin

A Revonda Porch

Hetero-telechelic polymers and processes for making same

Protected, functionalized heterotelechelic polymers, hydrogenated and/or deprotected analogues thereof, and processes to prepare these polymers. Monomers are polymerized using a protected functionalized initiator to form a living polymer, and the living polymer is reacted with an electrophile to form heterotelechelic polymers.

Protected functionalized heterotelechelic polymers and processes for preparing the same

Methacrylate and acrylate polymers and processes for making same

Functionalized chain extended initiators for anionic polymerization

A process for quickly preparing easily separable solutions of lithium tertiary-alkoxides. Comprising the steps of reacting lithium metal in bulk solid form, containing less than 0.1% by weight of sodium, with a tertiary alcohol in mole ratios of metal to alcohol ranging from 2 to 1 to 10 to 1 in a solvent selected from ethereal or hydrocarbon solvents under an inert atmosphere at elevated temperature for 1 to 10 hours, cooling the product and separating the product solution from the unreacted lithium metal in the reactor, and optionally adding solvent and sufficient lithium metal and alcohol to said unreacted metal in said reactor to maintain said mole ratio of lithium metal to alcohol, and continuing the reaction, thereby to form further lithium tert-alkoxide, and repeating said steps a number of times.

Lithium tertiary alkoxides

A process for removing a protecting group from a polymer. Protected functional groups of a polymer may be deprotected by treating the polymer in the presence of an acid catalyst, including organic acids, mineral acids, heterogeneous acid systems, Lewis acids, and fluoride ion sources.

Selected deprotection of protected functional polymers

Hetero-telechelic polymers having the formula:

Organometallic amide compositions and processes for preparing the same, for example, by: reacting an alkali metal, alkali metal hydride, or alkali metal amide with a substituted amine in the absence of an electron carrier; reacting an alkali metal with a substituted amine in the presence of an electron carrier in a hydrocarbon solvent; distilling a composition which includes an alkali metal amide and a reduced electron carrier to recover the alkali metal amide; reacting an alkali metal with a substituted amine in the presence of an alkyl halide; and reacting a substituted amine capable of reacting with an alkali metal to form a hydrocarbon insoluble alkali metal amide with an alkali metal in the presence of a substituted amine capable of reacting with an alkali metal to form a hydrocarbon soluble alkali metal amide.

Contaminant free organometallic amide compositions and processes for

A process for producing dispersions of atmospherically stable, coated alkali metal particles and atmospherically stable, coated alkali metal powders by agitating a mixture of molten alkali metal in a hydrocarbon oil at dispersion speeds, optionally in the presence of a dispersing agent, contacting the molten alkali metal-hydrocarbon oil dispersion, above or below the surface of the dispersion, with up to 3 weight percent anhydrous carbon dioxide while agitating the dispersion for at least 1 minute. The dispersion in oil can be used directly in chemical reactions. The bulk of the oil can be removed from the dispersions to produce oil wet particles, the oil wet particles car be washed with a low boiling hydrocarbon to produce hydrocarbon wet particles which can be dried to produce atmospherically stable powders of coated metal particles. The dispersed particles in oil, the oil wet particles, the hydrocarbon wet particles and the atmospherically stable powders can each be used in chemical reactions. After washing and drying, the process produces lithium powders having a surface coating composition containing 0.1-0.3 atom percent lithium, 0.3-0.4 atom percent carbon, and 0.3-0.5 atom percent oxygen. The products of the invention may be used to synthesize organometallic compounds, esp. n-butyl lithium and sec-butyl lithium, having low color and low soluble inorganic chloride levels.

Organoalkali compounds and their preparation

Deprotection of protected functional polymers

A process for producing nornally liquid hydrocarbon solutions of lithium dialkylamides and lithium alkylenecycloimides, essentially free of ethers and by-product gaseous alkanes derived from C1-C4 alkyllithium compounds, comprising reacting lithium metal with a C.sub.5 to C.sub.12 secondary amine and an electron carrier compound containing at least five carbon atoms in a normally liquid hydrocarbon solvent.

Lithium dialkylamide and lithium alkylenecycloimide formulations and

Protected functional initiators have been demonstrated to polymerize dienes and alkenyl substituted aromatics. The resultant living anions were linked with a coupling agent, such as divinylbenzene or tin tetrachloride, to afford a protected functionalized star polymer. Subsequent deprotection afforded a star polymer, with functional groups on the end of each arm of the star. The star polymer could be hydrogenated before or after removal of the protecting groups. The newly liberated functional groups can participate in further polymerization chemistry.

Functional telechelic star polymers

Polar polymers having the following formula:

Processes for making methacrylate and acrylate polymers

A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure:

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Gastonia, NC, United States of America

Conrad W Kamienski