Method for producing branched functionalized diene (co)polymers

摘要

The method consists of a polymerization process or a copolymerization process which is carried out in two parallel reactors, and each of dienes are polymerized or copolymerized with each other and/or with arylvinyl compounds, wherein an organolithium initiator, an electron donor additive and a branching agent are fed into the first reactor, and an organo lithium initiator, an electron donor additive and a functionalizing agent are fed into the second reactor, and the resultant polymerized mixtures are subsequently mixed with each other. This method allows for producing branched functionalized (co)polymers of dienes that are characterized by a statistical distribution of monomer units, a high content of vinyl units (1,2-butadiene units and/or 3,4-isoprene units (more than 60%)), a narrow molecular weight distribution and a controllable content of branched and functionalized parts in the (co)polymer.

主权项

1. A method for producing branched functionalized diene (co)polymers by polymerization or copolymerization of dienes with each other and/or with arylvinyl compounds in a hydrocarbon solvent in the presence of an organolithium initiator, an electron donor additive, a functionalizing agent, and a branching agent, characterized in that the method is carried out in two reactors connected in parallel, wherein the polymerization or the copolymerization of the dienes with each other and/or with the arylvinyl compounds is carried out in each of the reactors, wherein the organolithium initiator, the electron donor additive, and the branching agent are fed to the first reactor without the functionalizing agent, and the organolithium initiator, the electron donor additive, and the functionalizing agent are fed to the second reactor without the branching agent, and resultant polymerizing mixtures are subsequently mixed with each other.