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    • 56. 发明申请
    • POLOYMERIZATION PROCESS
    • 聚合过程
    • WO2005081851A2
    • 2005-09-09
    • PCT/US2005/005122
    • 2005-02-18
    • FINA TECHNOLOGY, INC.BLACKMON, Kenneth, PaulMALBARI, Shabbir Ahmedbhai
    • BLACKMON, Kenneth, PaulMALBARI, Shabbir Ahmedbhai
    • C08F10/00C08F110/06
    • C08F10/00C08F110/06C08F4/654C08F4/651C08F2/00C08F2500/12C08F2500/15
    • A monomer stream containing propylene is supplied to a polymerization reactor which is operated under temperature and pressure conditions effective for the production of a stereoregular propylene polymer fluff. A titanium-based supported Ziegler-Natta catalyst having a titanium content of at least 1.7% wt.% and incorporating an internal electron donor is incorporated into the monomer stream. A trialkylaluminum co-catalyst is supplied to the monomer stream in an amount to provide an aluminum/titanium molar ratio within the range of 50-500. A silicon-based external electron donor is also supplied to the monomer stream in an amount to provide an aluminium/silicon molar ratio within the range of 10-500. Polymer fluff recovered from the polymerization reactor has melt flow rate of at least 200 grams/10 minutes, and a xyleme soluble content of no more than 4 wt.%.
    • 将含有丙烯的单体流供给到聚合反应器中,聚合反应器在有效制备立体规则丙烯聚合物绒毛的温度和压力条件下运行。 将具有至少1.7重量%的钛含量的钛基负载的齐格勒 - 纳塔催化剂并入内部电子给体中,并入该单体流中。 将三烷基铝助催化剂以提供铝/钛摩尔比在50-500的范围内的量供给到单体流中。 硅基外电子给体也以提供铝/硅摩尔比在10-500范围内的量提供给单体流。 从聚合反应器回收的聚合物绒毛具有至少200克/ 10分钟的熔体流动速率,不超过4重量%的木质部溶解含量。