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US 11,512,161 B2Granted
Functional initiator for anionic polymerization
AssigneeBridgestone Corporation
InventorsYuan-Yong Yan, David M. Roggeman
Life of this patent
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Abstract
An ethylenically unsaturated polymer includes at a terminus the radical of an allylic compound that includes a functional group free of active hydrogen atoms that is bonded to the allylic C atom through a S, P, Si or Sn atom and a vinyl aromatic compound. The polymer can be used as a component of a variety of elastomeric compounds used in the production of vulcanizates.
Claims19
A process for providing a polymer that comprises ethylenic unsaturation, comprising:
- a) providing an initiating compound having the general formula
- where M is a Group 1 metal and Q is a R2R12Si group where each R1 independently is a hydrocarbyl group and R2 is R1 or a substituted hydrocarbyl group that is free of ethylenic unsaturation and active hydrogen atoms;
- b) introducing said initiating compound to a reaction vessel that comprises one or more organic liquids and one or more ethylenically unsaturated compounds which comprise at least one polyene;
- and
- c) allowing said one or more ethylenically unsaturated compounds to polymerize, thereby providing said polymer.
2 more elements
Dependencies are inferred from the claim text.