Substantially random ethylene and/or &agr;-olefin copolymers containing units derived from vicinally disubstituted olefin monomers are described. The vicinally disubstituted olefin monomers may be represented by the generic formula (R
1
)CH═CH(R
2
), where R
1
and R
2
independently comprise hydrocarbyl or silyl-hydrocarbyl groups containing 1 or more carbon atoms, or may be linear, branched or cyclic substituted or unsubstituted hydrocarbyl groups having from 1-100 carbon atoms, or they may contain 30 or less carbon atoms,. The copolymers may be prepared by coordination polymerization by means of contacting at least one vicinally disubstituted olefin monomer and ethylene and/or &agr;-olefin, optionally with one or more other coordination polymerizable monomers, with a catalyst system comprising a monocyclopentadienyl heteroatom-containing Group 4 transition metal catalyst component.
本发明描述了含有由邻位二取代烯烃单体衍生单元的基本无规
乙烯和/或&agr;-烯烃共聚物。邻位二取代烯烃单体可由通式(R
1
)CH═CH(R
2
其中 R
1
和 R
2
独立地包括含有 1 个或 1 个以上碳原子的烃基或
硅烷基-烃基,也可以是含有 1-100 个碳原子的线性、支链或环状取代或未取代的烃基,也可以是含有 30 个或更少的碳原子的烃基。共聚物可通过配位聚合法制备,其方法是将至少一种邻位二取代烯烃单体和
乙烯和/或 &agr;-烯烃(可选择与一种或多种其他可配位聚合的单体)与包含含单
环戊二烯杂原子的第 4 族过渡
金属催化剂组分的催化剂体系接触。