A catalyst composition for the polymerization or copolymerization of olefins composed of
(A) a titanium component (a-1) or (a-2),
(a-1) a highly active titanium component containing titanium, magnesium and halogen as essential ingredients, or
(a-2) a highly active titanium catalyst component obtained by treating component (a-1) with an organic compound containing active hydrogen bonded to oxygen, and
(B) an organoaluminum compound component, characterised in that
(i) when component (A) is the component (a-1), component (B) is an organoaluminum compound component obtained by treating a halogen-containing organoaluminum compound having a halogen/Al atomic ratio of at least 1/1 but less than 2/1 with a compound selected from water and organic compounds having active hydrogen bonded to oxygen, and
(ii) when component (A) is the component (a-2), the component (B) is a halogen-containing organoaluminum compound having a halogen/Al atomic ratio of at least 1/1 but less than 2/1, and the ratio of the amount (x) of the organic compound having active hydrogen atom bonded to oxygen and/or oxygen-containing group derived from said organic compound to the amount (y) of titanium x:y, is 4-100:1.
一种用于烯烃聚合或共聚的催化剂组合物,其组成包括
(A)
钛成分 (a-1) 或 (a-2)、
(a-1) 以
钛、
镁和卤素为主要成分的高活性
钛组分,或
(a-2) 将组分(a-1)与含有与氧结合的活性氢的有机化合物处理后得到的高活性
钛催化剂组分,以及
(B)
有机铝化合物组分,其特征在于
(i) 当组分(A)为组分(a-1)时,组分(B)为
有机铝化合物组分,该组分是通过将卤素/铝原子比至少为 1/1 但小于 2/1 的含卤素
有机铝化合物与选自
水和具有与氧结合的活性氢的有机化合物的化合物处理而得,和
(ii) 当组分(A)为组分(a-2)时,组分(B)为含卤素的
有机铝化合物,其卤素/铝原子比至少为 1/1,但小于 2/1,且具有与氧键合的活泼氢原子的有机化合物和/或从所述有机化合物衍生的含氧基团的量(x)与
钛的量(y)x:y之比为 4-100:1。