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AssigneeFMC Corporation
InventorsRoderic Paul Quirk, Young Joon Lee, James Anthony Schwindeman, Robert James Letchford
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Compositions including one or more anionic polymerization initiators and one or more additives for improving functionalizing efficiency of living polymer anions are disclosed. The present invention also provides compositions including one or more electrophiles and one or more additives for improving functionalizing efficiency of living polymer anions. Novel electrophiles and processes for improving polymer anion functionalization efficiencies are also disclosed. The additives are generally alkali metal halides or alkoxides, and the initiators are generally organs alkali metal compounds, particularly alkyl lithium compounds.
A composition comprising one or more anionic polymerization initiators and one or more salt additives selected from the group consisting of sodium chloride, sodium iodide, potassium chloride, potassium t-butoxide, and mixtures thereof, for increasing the efficiency of reactions between living polymer anions and electrophiles, wherein the one or more additives are present in an amount between about 0.27 and about 1.5 molar equivalents of the one or more initiators.
A composition comprising one or more anionic polymerization initiators and one or more salt additives selected from the group consisting of sodium chloride, sodium iodide, potassium chloride, potassium t-butoxide, lithium chloride, lithium bromide, lithium iodide, and mixtures thereof, wherein the one or more additives are present in an amount greater than 1 molar equivalent of the one or more initiators.
A composition comprising one or more anionic polymerization alkyllithium initiators of the formula R′—Li, wherein R′ is an aliphatic, cycloaliphatic, or arylsubstituted aliphatic radical, and dilithium initiators and one or more salt additives selected from the group consisting of sodium chloride, sodium iodide, potassium chloride, potassium t-butoxide, lithium chloride, lithium bromide, lithium iodide, and mixtures thereof, wherein the one or more additives are present in an amount greater than 1 molar equivalent of the one or more alkyllithium initiators.
Dependencies are inferred from the claim text.