Soluble multifunctional lithium containing initiator
AssigneeThe Dow Chemical Company
InventorsLu H. Tung, Grace Y-S. Lo, Douglas E. Beyer
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Abstract
Highly desirable organic liquid soluble multifunctional lithium containing initiators are prepared by reacting an 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.
Claims15
A multifunctional, lithium containing, polymerization initiating compound of the Formula:
- ##STR15## 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, R.sub.2 is a hydrocarbyl radical.
A solution particularly suited for the initiation of polymerization of a vinyl group containing compound which are polymerizable in the presence of a lithium containing initiator, particularly vinyl hydrocarbon compounds, the solution comprising a major portion of a solvent selected from the group consisting of liquid aliphatic, cycloaliphatic and aromatic hydrocarbons and mixtures thereof and a minor proportion of a multifunctional lithium containing polymerization initiating 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 R.sub.2 is a hydrocarbyl radical.
Dependencies are inferred from the claim text.