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公开(公告)号:US07163990B2
公开(公告)日:2007-01-16
申请号:US10477734
申请日:2002-05-14
IPC分类号: C08F4/44
CPC分类号: C07F15/065 , C07F15/025
摘要: A complex of transition metal Ti, Fe, Co, Ni, Cr, Mn, Ta, Rh, Y, Sc, Ru, Pd, Zr, Hf, V or Nb and a mono-, bi-, tri-, or tetra-dentate ligand, wherein at least one of the donor atoms of the ligand is a nitrogen atom N with a 5-membered heterocyclic substituent joined to the N by a carbon atom. The complex is preferably formula (I) wherein R5—N-G-X1 is a bi-, tri, or tetra-dentate ligand, N is joined to G by an imine linkage; G is a bridging group which can contain a third or fourth donor atom; X1 is —O or —S if the X1-M bond is covalent, or if the X1-M bond is dative X1 is ═S, —PR7R8, —PR8R9, ═NR7, ═NR8, —NR7R8 or —NR8R9; R5 and R7 are 5-membered heterocyclic substituents joined to the nitrogen (or phosphorus) atoms via a carbon atom: R8 and R9 are hydrocarbyl or heterohydrocarbyl, substituted hydrocarbyl or aryl substituent; X represents an atom or group covalently or ionically bonded to the transition metal M; L is a group datively bound to M, and n is from 0 to 5; q is 1 or 2. The complexes find use as polymerization catalysis, preferably with an activator, e.g. MAO
摘要翻译: 过渡金属Ti,Fe,Co,Ni,Cr,Mn,Ta,Rh,Y,Sc,Ru,Pd,Zr,Hf,V或Nb和单 - ,双 - ,三 - 齿状配体,其中配体的至少一个供体原子是具有通过碳原子连接到N的5元杂环取代基的氮原子N。 络合物优选为式(I),其中R 5 -NGX 1是双,三或四齿配体,N通过亚胺键与G连接 ; G是可以含有第三或第四供体原子的桥连基团; 如果X 1 -M键是共价的,则X 1是-O或-S,或者如果X 1 -M键是二价X S 1〜S 8是-S,-PR 7 R 8,-PR 8,9,9 ,-NR 7,-NR 8,-NR 7 R 8或-NR 8 9 SUP> R 5和R 7是通过碳原子连接到氮(或磷)原子上的5元杂环取代基:R 8和R 烃基或杂烃基,取代的烃基或芳基取代基; X表示与过渡金属M共价或离子键合的原子或基团; L是与M天然键合的基团,n为0〜5; q为1或2.配合物可用作聚合催化剂,优选使用活化剂,例如。 MAO
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公开(公告)号:US06410659B1
公开(公告)日:2002-06-25
申请号:US08904236
申请日:1997-07-31
IPC分类号: C08F464
CPC分类号: C08F210/16 , C08F4/65904 , C08F4/65912 , C08F4/65916 , C08F4/65925 , C08F10/00 , Y10S526/901 , Y10S526/943 , C08F2500/05 , C08F2500/10
摘要: A process for preparing bimodal molecular weight distribution copolymers of ethylene with alpha-olefins having 3 to 20 carbon atoms, said copolymers having: (a) a comonomer distribution wherein the comonomer level at the mid-position of the low molecular weight component is
摘要翻译: 一种制备乙烯与具有3至20个碳原子的α-烯烃的双峰分子量分布共聚物的方法,所述共聚物具有:(a)共聚单体分布,其中低分子量组分中间位置的共聚单体水平为<3 次高分子量组分中间位置的水平,和(b)0.5-20个短链分支(SCB)/ 1000C原子范围内的总平均共聚单体含量,其特征在于所述方法在 存在支持的多位点催化剂。 多位点催化剂包括茂金属络合物和齐格勒催化剂。 茂金属络合物例如是二氯化二(五甲基环戊二烯基)二氯化锆。
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公开(公告)号:US06258912B1
公开(公告)日:2001-07-10
申请号:US09353653
申请日:1999-07-15
IPC分类号: C08F21000
CPC分类号: C08F210/16 , C08F4/65912 , C08F4/65916 , C08F4/65927 , C08F10/00 , Y10S526/901 , Y10S526/943 , C08F210/14 , C08F2500/09 , C08F2500/20 , C08F2500/12 , C08F2500/26
摘要: A process for preparing polyolefins having at least 0.01 long chain branches (LCB)/1000 carbon atoms along the polymer backbone as measured by flow activation and a molecular weight distribution greater than 2.5 comprises polymerization in the presence of a metallocene complex having the formula: wherein Cp1, Cp2 are independently a substituted or unsubstituted indenyl or hydrogenated indenyl group, Y is a univalent anionic ligand, M is zirconium, titanium or hafnium, and Z is a bridging group comprising an alkylene group having 1 to 20 carbon atoms or a dialkyl silyl- or germyl- group, or alkyl phophine or amine radical. Polyolefins prepared from such a process show specific flow activation energy/LCB relationships.
摘要翻译: 通过流动活化和大于2.5的分子量分布测量,制备沿着聚合物主链具有至少0.01个长支链(LCB)/ 1000个碳原子的聚烯烃的方法包括在具有下式的茂金属络合物存在下聚合:其中Cp1 ,Cp2独立地是取代或未取代的茚基或氢化茚基,Y是一价阴离子配体,M是锆,钛或铪,Z是包含具有1至20个碳原子的亚烷基的桥连基或二烷基甲硅烷基或 甲锗烷基或烷基磷或胺基。 从这种方法制备的聚烯烃显示出特定的流动活化能/ LCB关系。
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