19-09-2013 дата публикации
Номер: US20130245210A1
The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index. 120-. (canceled)22. The process of claim 21 , wherein the process is conducted in a batch reactor claim 21 , slurry reactor claim 21 , gas-phase reactor claim 21 , solution reactor claim 21 , high pressure reactor claim 21 , tubular reactor claim 21 , autoclave reactor claim 21 , or a combination thereof.23. The process of claim 21 , wherein:the melt index of the olefin polymer produced by the process is in a range from about 0.1 to about 5 g/10 min; and{'sup': '3', 'a density of the olefin polymer produced by the process is in a range from about 0.89 to about 0.94 g/cm.'}24. The process of claim 21 , wherein catalyst component I comprises a compound having formula (C) claim 21 , and wherein:{'sup': 4', '5, 'Xand Xare independently F, Cl, Br, I, benzyl, phenyl, or methyl;'}{'sup': '3', 'claim-text': a cyclopentyl or cyclohexyl group,', {'sup': 3A', '7A', '8A', '3A', '7A', '8A, 'a bridging group having the formula >ERR, wherein Eis C or Si, and Rand Rare independently H, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, ethenyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, phenyl, tolyl, or benzyl,'}, {'sup': 7B', '8B', '7C', '8C', '7B', '8B', '7C', '8C, 'a bridging group having the formula —CRR—CRR—, wherein R, R, R, and Rare independently H or methyl, or'}, {'sup': 7D', '8D', '7E', '8E', '7D', '8D', '7E', '8E, 'a bridging group having the formula —SiRR—SiRR—, wherein R, R, R, and Rare independently H or methyl; and'}], 'Eis a bridging group selected from{'sup': 9', '10, 'Rand Rare independently H or t-butyl.'}25. The process of claim 21 , wherein catalyst component I comprises a compound having formula (D) claim ...
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