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(OR
1
)
3
(NR
2
R
3
) Formula 37
(where in Formula 37, R
1
is a hydrocarbon group with 1 to 6 carbon atoms; R
2
is a hydrocarbon group with 1 to 12 carbon atoms or hydrogen; and R
3
is a hydrocarbon group with 1 to 12 carbon atoms)
RNSi(OR
1
)
3
Formula 38
(where in Formula 38, R
1
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用于聚合或共聚α-烯烃的催化剂、其催化剂成分和α-烯烃聚合的方法,用于生产具有高氢响应、高聚合反应速率、高立体规整度和优异熔融流动性的α-烯烃聚合物或共聚物。该发明公开了用于聚合或共聚α-烯烃的催化剂成分,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个碳原子的烃基;R2是具有1至12个碳原子或氢原子的烃基;R3是具有1至12个碳原子的烃基)RNSi(OR1)3 式38(其中,在式38中,R1是具有1至6个碳原子的烃基;RN是环状
氨基基团)。