| 摘要 |
FIELD: chemistry.SUBSTANCE: catalyst contains an organic compound of formula 1, an organometallic compound of formula 2, an organic transition metal compound of formula 3 and aluminoxane. Formula 1: R-H or R-Q-R, where Ris a cyclic hydrocarbyl group containing 5-30 carbon atoms and at least 2 conjugated double bonds, and can be unsubstituted or can contain 1-6 substitutes which are selected from alkyl groups containing 1-20 carbon atoms; Q is a divalent group for bridging groups R, which is a (CR?)group, where the substitute Ris a hydrogen atom, b is an integer from 1 to 4. Formula 2: MR?R?R?R?, where Mis an element selected from a group consisting of group 1 and 2 elements, R, R, Rand Rindependently denote a hydrocarbyl group containing 1-24 carbon atoms, m, n, p and q are independently equal to 0 or 1, and the sum m+n+p+q is equal to the valence of M. Formula 3: MR?X, where Mis titanium (Ti), zirconium (Zr) or hafnium (Hf), Ris as defined for R, X is a halogen atom, r is equal to 0 or 1, s is equal to 3 or 4, and the sum r+s is equal to the valence of metal M. A method for polymerising olefin is also provided.EFFECT: invention enables to obtain a catalyst having various catalytic properties in accordance with the combination of its components, and which can easily adjust molecular weight, molecular-weight distribution and composition of the obtained olefin polymer or copolymer.8 cl, 10 ex |
