Process for continuous synthesis of a diene elastomer
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United States of America Patent
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Nov 7, 2017
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Jul 1, 2013
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Jul 2, 2012
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Abstract
A process for the continuous synthesis of diene elastomers with a high degree of conversion is provided. The process includes simultaneously:
- a) introducing continuously into a polymerization reactor containing a gas phase and equipped with at least one stirring rotor and a discharge device, at least i. one or more monomers, including at least one conjugated diene monomer, and ii. from 0% to 70% by mass of an organic solvent, calculated relative to the total mass of monomers and of solventb) continuously polymerizing the monomer(s),c) stirring the polymerization medium via the continuous movement of at least one stirring rotor about a rotary axle,d) continuously discharging the elastomer paste,e) continuously conveying the discharged elastomer paste to a chopping device and chopping it into particles,f) removing solvent from the particles of the elastomer paste, andg) recovering diene elastomer.
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