Processes for improving stability of living polymer chain ends
AssigneeFMC Corporation
InventorsThorsten Werner Brockmann, Vijay C. Mehta
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Abstract
Processes for improving the thermal stability of living polymer anions are provided. The invention further improves the efficiency of subsequent functionalization and linking reactions of such living polymer anions.
Claims48
A process for improved functionalization of living polymer anions, comprising anionically polymerizing one or more monomers in the presence of one or more functionalized alkyllithium initiators to form one or more living polymer anions, in the presence at least one organometallic compound capable of forming an ate complex with a lithiated species in an amount less than about 10 mol %, based on the amount of lithiated species present, so as to impart thermal stability to said living polymer anions without significantly inhibiting the reactivity of the lithiated species.
A polymer composition comprising one or more anionically polymerized functionalized living polymers and at least one organometallic compound capable of forming an ate complex with an alkyllithium species in an amount less than about 10 mol %, based on the amount of lithiated species present, so as to thermally stabilize said living polymer anions without significantly inhibiting the reactivity of the lithiated species.
Dependencies are inferred from the claim text.