CAS: 158515-16-3; Rac-(Dimethylsilylene) Bis (2-Methyl-4-Phenylindenyl) Zirconium Dichloride

专利信息

专利号:US-10730970-B2
优先权日:2015-12-17
标题:Process for determining one or more operating conditions of an olefin polymerization reactor
发明人：FERNANDEZ ALVARO
权利人:TOTAL RES & TECHNOLOGY FELUY
摘要:The present invention relates to a process for determining a set of one or more operating conditions of an olefin polymerization reactor for the synthesis of a polyolefin in slurry condition, comprising the steps of:n a1) introducing a polyolefin into a volume of at least one diluent, said diluent being agitated by a powered agitator at a first temperature T1; b1) monitoring the power consumed by the agitator as a function of the concentration, for at least three concentrations C1, C2, and Cn, which are different from each other; c1) repeating steps a1) and b1) at two or more subsequent temperatures T2 and Tn, which are different from each other and from T1; d1) determining from the power consumed by the agitator as a function of concentration, said set of one or more stable operating conditions for the synthesis of the polyolefin in the olefin polymerization reactor.

专利号:US-6184402-B1
优先权日:1998-08-03
标 题 :Processes for the preparation of metallocene complexes
发明人：YAMAZAKI HIROSHI; NAKANO MASATO; MITANI SEIKI; SAITO JUN; HARADA MASATO; KOYAMA MINA
权利人:CHISSO CORP
摘要:Disclosed is a process for the preparation of metallocone complexes wherein stereoisomers of metallocene complexes formed at the time of synthesis can easily be separated. The gist of the present invention resides in separation of a part of an isomeric mixture of specific metallocene complexes bridged with a transition metal represented by the formula (1) as a complex having M—O bond. In particular, preferable is a process for separating a part of an isomeric mixture of a metallocene complex represented by the formula (2) as a μ-oxo-complex represented by the formula (3).