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    • 3. 发明授权
    • Process for separating mixtures of hydrocarbon isomers in gas phase on molecular sieves
    • 在分子筛上分离气相中烃异构体的混合物的方法
    • US06924406B2
    • 2005-08-02
    • US09886994
    • 2001-06-25
    • Gianluca GirardiGianni PandolfiRenzo BignazziRenato Paludetto
    • Gianluca GirardiGianni PandolfiRenzo BignazziRenato Paludetto
    • C07C7/13C07C9/14C07C15/04C07C15/06C07C15/073C07C15/08C10G25/03C10G53/08C07C7/12
    • C07C7/13
    • A process for separating mixtures of hydrocarbon isomers on molecular sieves, including providing columns which include molecular sieves and function alternatively as secondary adsorption, primary adsorption, and desorption devices, feeding the mixtures of hydrocarbon isomers to a column functioning as the primary adsorption device for adsorbing isomers with greater selectivity towards the molecular sieves, feeding effluent of the mixtures from the column functioning as the primary adsorption device to a column functioning as the secondary adsorption device for adsorbing remaining isomers with greater selectivity, discharging isomers with a lower selectivity from the column functioning as the secondary adsorption device and a desorbing agent therein, feeding a desorbing agent to the column functioning as the desorption device, discharging isomers with a greater selectivity towards the molecular sieves and the desorbing agent in the column functioning as the desorption device.
    • 分子筛上分离烃异构体的混合物的方法,包括提供包括分子筛的色谱柱,或者作为二次吸附,主要吸附和解吸装置的功能,将烃异构体的混合物供给到用作吸附的主要吸附装置的塔 对分子筛具有更高选择性的异构体,将来自作为主要吸附装置的塔的混合物的流出物供给到用作用于以更高选择性吸附剩余的异构体的第二吸附装置的塔,从柱的功能以较低的选择性排出异构体 作为第二吸附装置和解吸剂,将脱附剂供给到用作解吸装置的塔中,以用作解吸装置的塔中的分子筛和解吸剂以更大的选择性排出异构体。
    • 10. 发明授权
    • Substituted metallocene catalyst for the (co)polymerization of olefins
    • 用于烯烃(共)聚合的取代茂金属催化剂
    • US5936051A
    • 1999-08-10
    • US802875
    • 1997-02-19
    • Roberto SantiGiampiero BorsottiCecilia QuerciLiliana GilaAntonio Proto
    • Roberto SantiGiampiero BorsottiCecilia QuerciLiliana GilaAntonio Proto
    • C07F17/00C08F4/64C08F4/642C08F4/659C08F4/6592C08F10/00C08F10/02
    • C07F17/00C08F10/00Y10S526/904Y10S526/943
    • Metallocene complexes of a metal M selected from titanium, zirconium and hafnium, comprising at least one anionic group A containing an .eta..sup.5 -cyclopentadienyl ring co-ordinated with the metal M, wherein the anionic group is substituted in at least one position of the cyclopentadienyl ring with a radical having the formula:Ph*--(CR.sup.6 R.sup.7).sub.nwherein: R.sup.6 and R.sup.7 are independently hydrogen, halogen or a C.sub.1 -C.sub.4 alkyl group, preferably hydrogen, "n" is 0 or 1, preferably 1, Ph* is a C.sub.6 -C.sub.14 group comprising an aromatic ring linked to --CR.sup.6 R.sup.7 -- or to A and substituted with at least one and up to a maximum of three electron-attractor groups, on the condition that, when A is an .eta..sup.5 -indenyl group and "n" is 0, at least one Ph group is linked to A in position 1 or 3 of indenyl.These complexes can be used in (co)polymerization processes of .alpha.-olefins, possibly in the presence of a suitable co-catalyst, for the production of polyolefins with a very high molecular weight.
    • 选自钛,锆和铪的金属M的茂金属络合物,其包含至少一个阴离子基团A,其含有与金属M配位的η5-环戊二烯基环,其中阴离子基团在至少一个位置的环戊二烯基 具有下式的基团:Ph * - (CR 6 R 7)n其中R 6和R 7独立地是氢,卤素或C 1 -C 4烷基,优选氢,“n”是0或1,优选1,Ph *是 包含与-CR 6 R 7 - 或A连接的芳环的C 6 -C 14基团,并且被A至5个茚基取代,并且被至少一个和最多三个吸电子基团取代, n“为0,至少有一个Ph基与茚基的1位或3位的A连接。 这些络合物可用于α-烯烃的(共)聚合方法中,可能在合适的助催化剂存在下,用于生产具有非常高分子量的聚烯烃。