Tertiaryaminoalkyllithium initiators and the preparation thereof
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United States of America Patent
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Dec 22, 1998
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app pub date -
Dec 31, 1996
filing date -
Dec 31, 1996
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Abstract
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.
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