LITHIUM AMINO MAGNESIATE POLYMERIZATION INITIATORS AND ELASTOMERS HAVING REDUCED HYSTERESIS

摘要

The present invention provides anionic polymerization initiators, comprising lithium amino magnesiate complexes, resulting in diene polymer and copolymer elastomers. The invention initiators have stable living ends at high polymerization temperatures and produce polymers containing a high level of tertiary amine functionality. Such polymers exhibit an increased efficiency in coupling termination reactions, and elastomers and products prepared from such polymers exhibit reduced hysteresis properties. Methods are also provided for preparing the initiators, the polymers and the elastomers.