Multi reactor process

Details Multi reactor process Multi reactor process

C - Chemistry, Metallurgy

08

F

C08F 2/01 (2006.01) C08F 10/02 (2006.01)

Patent

CA 2688217

This invention relates to the polymerization of ethylene polymers using a continuously stirred tank reactor (CSTR) that is connected in series to a tubular reactor. The tubular reactor receives a polymer solution from the CSTR. Further polymerization in the tubular reactor improves production efficiencies, particularly with respect to lowering the amount of energy required to recover the polymer and residual comonomer from the solution. The use of tempered i.e. (heated) ethylene in the tubular reactor has been discovered to mitigate gel problems and lower/reduce levels of hexane extractables.

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