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    • 8. 发明授权
    • Process for the in situ blending of polymers
    • 聚合物原位共混方法
    • US5126398A
    • 1992-06-30
    • US724804
    • 1991-07-02
    • Kiu H. LeeFrederick J. KarolSari B. Samuels
    • Kiu H. LeeFrederick J. KarolSari B. Samuels
    • C08F210/16C08F297/08
    • C08F297/08C08F210/16
    • A process for the in situ blending of polymers comprising continuously contacting, under polymerization conditions, a mixture of ethylene and at least one alpha-olefin having at least 3 carbon atoms with a catalyst in at least two fluidized bed reactors connected in series, said catalyst comprising:(i) a complex consisting essentially of magnesium titanium, a halogen, and an electron donor;(ii) at least one activator compound; and(iii) a hydrocarbyl aluminum cocatalyst, the polymerization conditions being such that ethylene copolymer having a high melt index in the range of about 0.1 to about 1000 grams per 10 minutes is formed in at least one reactor and ethylene copolymer having a low melt index in the range of about 0.001 to about 1.0 gram per 10 minutes is formed in at least one other reactor, each copolymer having a density of about 0.860 to about 0.965 gram per cubic centimeter and a melt flow ratio in the range of about 22 to about 70, and being admixed with active catalyst.
    • 一种用于原位共混聚合物的方法,包括在聚合条件下将至少一种具有至少3个碳原子的至少一种α-烯烃的混合物与至少两个串联连接的流化床反应器中的催化剂连续接触,所述催化剂 包括:(i)基本上由镁钛,卤素和电子给体组成的络合物; (ii)至少一种活化剂化合物; 和(iii)烃基铝助催化剂,聚合条件使得在至少一个反应器中形成熔体指数在约0.1至约1000克/ 10分钟范围内的乙烯共聚物,其熔体指数低 在至少一个其它反应器中形成约0.001至约1.0克/ 10分钟的范围,每个共聚物的密度为约0.860至约0.965克/立方厘米,熔体流动比在约22至约 70,并与活性催化剂混合。
    • 10. 发明授权
    • Process for the in situ blending of polymers
    • 聚合物原位共混方法
    • US5149738A
    • 1992-09-22
    • US724805
    • 1991-07-02
    • Kiu H. LeeFrederick J. KarolSari B. Samuels
    • Kiu H. LeeFrederick J. KarolSari B. Samuels
    • C08F210/16C08F297/08
    • C08F297/08C08F210/16
    • A process for the in situ blending of polymers comprising continuously contacting, under polymerization conditions, a mixture of ethylene and at least one alpha-olefin having at least 3 carbon atoms with a catalyst in at least two fluidized bed reactors connected in series, said catalyst comprising:(i) a complex consisting essentially of magnesium titanium, a halogen, and an electron donor;(ii) at least one activator compound for the complex having the formula AlR".sub.e X'.sub.f H.sub.g wherein X' is Cl or OR'"; R" and R'" are saturated aliphatic hydrocarbon radicals having 1 to 14 carbon atoms and are alike or different; f is 0 to 1.5; g is 0 or 1; and e+f+g=3; and(iii) a hydrocarbyl aluminum cocatalyst, the polmerization conditions being such that ethylene copolymer having a high melt index in the range of about 0.1 to about 1000 grams per 10 minutes is formed in at least one reactor and ethylene copolymer having a low melt index in the range of about 0.001 to about 1.0 gram per 10 minutes is formed in at least one other reactor, each copolymer having a density of about 0.860 to about 0.965 gram per cubic centimeter and a melt flow ratio in the range of about 22 to about 70, and being admixed with active catalyst.
    • 一种用于原位共混聚合物的方法,包括在聚合条件下将至少一种具有至少3个碳原子的至少一种α-烯烃的混合物与至少两个串联连接的流化床反应器中的催化剂连续接触,所述催化剂 包括:(i)基本上由镁钛,卤素和电子给体组成的络合物; (ii)具有式AlR''EX'fHg的络合物的至少一种活化剂化合物,其中X'为Cl或OR“'; R“和R”'是具有1至14个碳原子的饱和脂族烃基,并且是相同或不同的; f为0〜1.5; g为0或1; 和e + f + g = 3; 和(iii)烃基铝助催化剂,所述聚合条件使得在至少一个反应器和具有低熔体指数的乙烯共聚物中形成具有约0.1-约1000克/ 10分钟范围内的高熔体指数的乙烯共聚物 在至少一个其它反应器中形成约0.001至约1.0克/ 10分钟的范围,每个共聚物的密度为约0.860至约0.965克/立方厘米,熔体流动比在约22至约 70,并与活性催化剂混合。