Tertiaryaminoalkyllithium initiators and the preparation...

Details Tertiaryaminoalkyllithium initiators and the preparation... Tertiaryaminoalkyllithium initiators and the preparation...

C - Chemistry, Metallurgy

07

F

C07F 1/02 (2006.01) C08F 4/48 (2006.01) C08F 36/04 (2006.01)

Patent

CA 2224341

Relatively pure tertiaryaminoalkyllithium initiators suitable for anionic polymerization reactions are prepared at low temperatures in an organic ether by reacting an equivalent excess of lithium metal with a tertiaryaminoalkylhalide. The lithium initiators are very stable at moderate temperatures when the ether is replaced by an aliphatic, a cycloaliphatic, or an aromatic solvent. Yields of the initiator in excess of 98% are readily achieved.

Initiateurs relativement purs de tert-aminoalkyllithium convenant aux réactions de polymérisation anioniques, qui sont préparés à basse température dans un éther organique par la réaction d'un excès équivalent de lithium métal avec un halogénure de tert-aminoalkyle. Les initiateurs au lithium sont très stables aux températures modérées lorsque que l'éther est remplacé par un solvant aliphatique, cycloaliphatique ou aromatique. On obtient facilement des rendements d'initiateur supérieur à 98 %.

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