Soluble multifunctional lithium containing initiator
AssigneeThe Dow Chemical Company
InventorsLu H. Tung, Grace Y. Lo, Douglas E. Beyer
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Abstract
Highly desirable organic liquid soluble multifunctional lithium containing initiators are prepared by reacting on organo lithium compound with an organic compound containing at least one group of the configuration 1,3-bis(1-phenylethenyl)benzene. Such initiators can be prepared in the absence of polar solvents and are very desirable for the polymerization of dienes such as butadiene to a desirable 1,4 configuration.
Claims10
A method for the polymerization of vinyl compounds containing at least one vinyl group and particularly vinyl hydrocarbon compounds which are polymerizable in the presence of a lithium containing catalyst, the steps of the method comprising providing a solution of the reaction product of a compound of the Formula:
- ##STR16## wherein R.sub.1 and R.sub.3 are individually selected from the group consisting of hydrogen, alkyl hydrocarbon radicals and alkoxy radicals, with the further limitation that R.sub.1 and R.sub.3 contain from 0 to 16 carbon atoms, and a lithium containing compound of the Formula:
- R.sub.2 Li
- R.sub.2 is a hydrocarbyl radical to provide a multifunctional lithium compound having the Formula:
- ##STR17## and subsequently contacting the resultant solution with at least one organolithium polymerizable monomer to cause the polymerization of the monomer to a corresponding polymer.
Dependencies are inferred from the claim text.