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.
申请公布号
CA2688217(C)
申请公布日期
2016.07.12
申请号
CA20092688217
申请日期
2009.12.11
申请人
NOVA CHEMICALS CORPORATION
发明人
VAN ASSELDONK, LAUWRENCE MARTIN JOZEF;BROWN, STEPHEN JOHN