FIELD: chemistry.
SUBSTANCE: invention relates to a metallocene bridge compound of formula 
(II), in which: M denotes a transition metal atom selected from group 4 metals; X, identical or different, denote a halogen atom; L denotes a Si(R11)2 group, where R11 denotes a C1-C40-alkyl radical; R1 denotes a linear C1-C10-alkyl radical; R4 denotes a hydrogen atom; R11 and R12 denote a hydrogen atom or C1-C10-alkyl radicals; R7 denotes a branched C1-C40-allkyl radical, in which the carbon atom in the alpha-position is a tertiary carbon atom; and R6, R8, R9 and R10 denote hydrogen atoms. The invention also discloses an olefin polymerisation catalyst system, a method of producing an alpha-olefin polymer and a multi-step polymerisation method.
EFFECT: metallocene compounds can polymerise olefin with high output and obtain polymers with high molecular weight.
10 cl, 25 ex, 5 tbl
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| METHOD OF OLEFIN POLYMERISATION | 2006 |
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|
RU2362779C2 |
| 1-BUTENE POLYMER COMPOSITION | 2005 |
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RU2371459C2 |
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| ETHYLENE-OLEFIN MONOMER COPOLYMER, METHOD OF PREPARING THEREOF, AND CATALYST | 1993 |
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| ELASTOMERIC ETHYLENE POLYMERS AND METHOD OF PREPARING THEREOF | 1994 |
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RU2143441C1 |
| CATALYSIS FOR POLYMERIZATION OF ALPHA-OLEFINS, METHOD OF HOMO-AND COPOLYMERIZATION OF ALPHA-OLEFINS AND METHOD OF PREPARING ELASTOMERIC ETHYLENE COPOLYMERS | 1996 |
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| CATALYSIS AND METHODS OF POLYMERIZATION OF OLEFINS | 1995 |
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| METHOD OR (CO)POLYMERIZATION OF OLEFINS | 1995 |
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RU2171265C2 |
