The invention has an object to provide a catalyst for polymerizing or copolymerizing an α-olefin, catalyst constituent thereof, and method of polymerizing α-olefins with the catalyst, for production of α-olefin polymers or copolymers with high hydrogen response, high polymarization reaction rate, high stereoregularity and excellent melt fluidity. The invention discloses a catalyst constituent of the catalyst for polymerizing or copolymerizing an α-olefin, represented by Formula 37 or 38:
Si(OR1)3(NR2R3)Formula 37
(where in Formula 37, R1 is a hydrocarbon group with 1 to 6 carbon atoms; R2 is a hydrocarbon group with 1 to 12 carbon atoms or hydrogen; and R3 is a hydrocarbon group with 1 to 12 carbon atoms)
RNSi(OR1)3Formula 38
(where in Formula 38, R1 is a hydrocarbon group with 1 to 6 carbon atoms; and RN is a cyclicl amino group).
本发明旨在提供一种催化剂、其组成部分以及用该催化剂聚合或共聚α-烯烃的方法,以生产具有高氢响应性、高聚合反应速率、高立构物规则性和优异熔融流动性的α-烯烃聚合物或共聚物。本发明揭示了用于聚合或共聚α-烯烃的催化剂的催化剂组成部分,由式37或38表示:Si(OR1)3(NR2R3)式37(其中,在式37中,R1是具有1至6个碳原子的碳氢基团;R2是具有1至12个碳原子或氢原子的碳氢基团;R3是具有1至12个碳原子的碳氢基团)RNSi(OR1)3式38(其中,在式38中,R1是具有1至6个碳原子的碳氢基团;RN是环状
氨基基团)。