| abstract |
The present invention relates to a process for the preparation of functionalized cis-1,4-polydienes having a combination of high cis-1,4-binding content and high functionality, resulting polymers and vulcanized products containing said polymers. . The functionalized cis-1,4-polydiene of the present invention comprises (a) a lanthanide compound in the presence of (1) less than about 20% by weight of an organic solvent based on the total weight of monomers, organic solvent and polymer produced. preparing a reactive polymer by polymerizing a conjugated diene monomer with a lanthanum catalyst which is a combination or reaction product of (b) aluminoxane, (c) an organoaluminum compound except aluminoxane, and (d) a halogen-containing compound; And (2) contacting the reactive polymer with a functionalizing agent.n n n Cis-1,4-bond content, functional, cis-1,4-polydiene |