| 摘要 |
A catalyst for the polymerisation of 1-olefins is disclosed, which comprises(1) a compound of Formula B wherein M is FeÍI!, FeÍII!, CoÍ!, CoÍI!, CoÍII!, MnÍ!, MnÍI!, MnÍII!, MnÍV!, RuÍI!, RuÍII! or RuÍV!; X represents an atom or group covalently or ionically bonded to the transition metal M; T is the oxidation state of the transition metal M and b is the valency of the atom or group X; R1, R2, R3, R4, R5, R6 and R7 are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl; and when any two or more of R1-R7 are hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, said two or more can be linked to form one or more cyclic substituents; and (2) a further catalyst. Copolymers made using the catalyst having specific physical properties are also disclosed. |
