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AssigneeShell Oil Company
InventorsCraig A. Stevens, Carma J. Gibler, Linda R. Chamberlain, Thomas F. Brownscombe
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This is an improvement upon a process which comprises anionically polymerizing monomers with an anionic polymerization initiator in a suitable solvent thereby creating a living polymer. The improvement comprises terminating the polymerization by the addition of a terminating agent selected from the group consisting of hydrocarbons containing a C-H group where the carbon is connected directly to a triply-bound carbon, hydrocarbons containing a C-H group where the carbon is connected directly to two doubly-bound carbons and hydrocarbons containing a C-H group where the carbon is connected directly to at least 2 aromatic rings, whereing none of said hydrocarbons contain additional aliphatic unsaturation.
In a process for anionically polymerizing monomers with an anionic polymerization initiator in a suitable solvent thereby creating a living polymer, the improvement which comprises terminating the polymerization by the addition of a terminating agent selected from the group consisting of hydrocarbons containing a C--H group where the carbon is connected directly to a triply-bound carbon, hydrocarbons containing a C--H group where the carbon is connected directly to two doubly-bound carbons and hydrocarbons containing a C--H group where the carbon is connected directly to at least 2 aromatic rings, wherein none of said hydrocarbons contain additional aliphatic unsaturation.
The process of claim wherein the monomers to be polymerized are conjugated diolefins and alkenyl aromatic compounds.
Dependencies are inferred from the claim text.