Polymerization process using an ester ramifying agent and polymers therefrom
Abstract
Abstract STAR-SHAPED HOMOPOLYMERS AND COPOLYMERS OF CONJUGATED DIENE MONOMER AND STAR-SHAPED COPOLYMERS OF CONHYGATED DIENE MONOMER WITH VINYLAROMATIC MONOMER, HAVING THREE OR FOUR BRANCHES AND HAVING SATISFACTORY WORKING AND LOW COLD FLOW PROPERTIES, AS WELL AS VULCANIZATES THEREOF, HAVING LOW HUSTERETIC LOSS, CAN BE PREPARED BY THE SOLUTION POLYMERIZATION OFTHE MONOMERS WITH A MONOALKALINE ANIONIC INITIATOR OR CATALYST AND TREATMENT OF THE ACTIVATED POLYMERS AND COPOLYMERS WITH A SOLUTION OF AN ESTER RAMIFYING OR BRANCHING AGENT HAVING THEREIN EITHER A GROUP -O-CO-O- SUCH AS ETHYLENE GLYCOL CARBONATE, OR A GROUP -OOC-R-COO- WHERE R IS A DIVALENT SATURATED OR UNSATURATED ALIPHATIC OR AROMATIC HYDROCARBON RADICAL, SUCH AS DIMETHYL TEREPHTHALATE.
Inventors
- 👤 J Dillenschneider
Bibliographic Details
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