Functional initiator for anionic polymerization
AssigneeBridgestone Corporation
InventorsYuan-Yong Yan, David M. Roggeman
Life of this patent
Estimating the term…
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.
Claims27
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 functional group that is free of active hydrogen atoms and that is bonded to the allylic C atom of the allyl anion through a atom;
- 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;
- c) allowing said one or more ethylenically unsaturated compounds to polymerize, thereby providing said polymer;
- and
- d) optionally, while said polymer is in carbanionic form, allowing it to react with a terminating compound, coupling agent or linking agent so as to provide terminal functionality to said polymer.
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 functional group that is free of active hydrogen atoms and that is bonded to the allylic C atom of the allyl anion through a P atom;
- 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;
- c) allowing said one or more ethylenically unsaturated compounds to polymerize, thereby providing said polymer;
- and
- d) optionally, while said polymer is in carbanionic form, allowing it to react with a terminating compound, coupling agent or linking agent so as to provide terminal functionality to said polymer.
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 functional group that is free of active hydrogen atoms and that is bonded to the allylic C atom of the allyl anion through a Sn atom;
- 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;
- c) allowing said one or more ethylenically unsaturated compounds to polymerize, thereby providing said polymer;
- and
- d) optionally, while said polymer is in carbanionic form, allowing it to react with a terminating compound, coupling agent or linking agent so as to provide terminal functionality to said polymer.
Dependencies are inferred from the claim text.