Monomer recovery in polymerization process
Abstract
Abstract IN ACCORDANCE WITH CERTAIN OF ITS ASPECTS, THE NOVEL METHOD OF THIS INVENTION FOR RECOVERING UNREACTED HIGHER ALPHA-OLEFIN FROM A LIQUID EFFUENT EXITING A POLYMERIZATION REACTION CONTAINING CATALYST, UNREACTED ETHYLENE, UNREACTED HIGHER ALPHA-OLEFIN, AND A CEMENT OF ETHYLENEHIGHER ALPHA-OLEFIN COPOLYMER IN A LIQUID DILUENT-SOLVENT WHEREIN SAID HIGHER ALPHA-OLEFIN HAS A BOILING POINT AT LEAST 50*C. BELOW THE BOILING POINT OF SAID DILUENT-SOLVENT MAY COMPRISE: (A) WITHDRAWING SAID LIQUID EFFUENT FROM SAID POLYMERIZATION REACTION; (B) DIRECTLY FLASHING SAID LIQUID EFFUENT THEREBY SEPARATING, AS OVERHEAD, DILUENT-SOLVENT AND UNREACTED ETHYLENE AND UNREACTED HIGHER ALPHA-OLEFIN AND, AS BOTTOMS, A CONCENTRATED POLYMER CEMENT CONTAINING A MINOR PORTION OF UNREACTED HIGHER ALPHA-OLEFIN; (C) RECOVERING SAID UNREACTED HIGHER ALPHA-OLEFIN; AND (D) RECOVERING SAID CONCENTRATED POLYMER CEMENT.
Inventors
- 👤 B Tegge
- 👤 B Rosenbaum
- 👤 M Plains
Bibliographic Details
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