Supported modified alumoxane catalyst activator
    142.
    发明授权
    Supported modified alumoxane catalyst activator 失效
    负载改性铝氧烷催化剂活化剂

    公开(公告)号:US06696379B1

    公开(公告)日:2004-02-24

    申请号:US09502502

    申请日:2000-02-11

    Abstract: A supported catalyst composition comprising: A1) a mixture of aluminum containing Lewis acids of the formulas: [(—AlQ1—O—)z(—AlArf—O—)z′] and (Arfz″Al2Q16−z″)  where; Q1 independently each occurrence is C1-20 alkyl; Arf is a fluorinated aromatic hydrocarbyl moiety of from 6 to 30 carbon atoms; z is a number from 1 to 50; z′ is a number from 1 to 50; and z″ is an number from 0 to 6; or A2) a fluorohydrocarbyl-substituted alumoxane compound corresponding to the formula: R1—(AlR3O)m—R2,  wherein: R1 and R2 independently each occurrence is a C1-40 aliphatic or aromatic group or a fluorinated derivative thereof or R1 and R2 together form a covalent bond; R3 independently each occurrence is a monovalent, fluorinated organic group containing from 1 to 100 carbon atoms or R1, with the proviso that in at least one occurrence per molecule, R3 is a monovalent, fluorinated organic group containing from 1 to 100 carbon atoms, and m is a number from 1 to 1000; B) a Group 3, 4, or Lanthanide metal complex containing from 1 to 3 &pgr;-bonded anionic or neutral ligand groups; and C) a support.

    Abstract translation: 一种载体催化剂组合物,其包含:A1)含有下式的含铝路易斯酸的混合物:其中; Q 1各自独立地为C 1-20烷基; Ar f为6至30碳的氟化芳族烃基部分 原子; z是1至50的数; z'是1至50的数; andz“是从0到6的数字; 或A2)对应于下式的氟代烃基取代的铝氧烷化合物:其中:R 1和R 2各自独立地为C 1-4脂族或芳族基团或其氟化衍生物或R 1和R 2 >共同形成共价键; R 3各自独立地为含有1至100个碳原子或R 1的单价含氟有机基团,条件是在每分子至少一次出现时,R 3, 是含有1至100个碳原子的单价氟化有机基团,并且m为1至1000的数; B)含有1至3个π键合的阴离子或中性配体基团的第3,4族或镧系元素金属络合物; 和C)支持。

    Single-site catalysts for olefin polymerization
    143.
    发明授权
    Single-site catalysts for olefin polymerization 失效
    用于烯烃聚合的单中心催化剂

    公开(公告)号:US06660678B1

    公开(公告)日:2003-12-09

    申请号:US09716954

    申请日:2000-11-21

    Applicant: Jia-Chu Liu

    Inventor: Jia-Chu Liu

    Abstract: A method for making single-site catalysts useful for olefin polymerization is disclosed. A nitrogen-functional heterocycle is first deprotonated with an alkyllithium compound, followed by reaction of this anionic ligand precursor with about 0.5 equivalents of a Group 4 transition metal tetrahalide in a hydrocarbon solvent at a temperature greater than about 10° C. to give an organometallic complex-containing mixture. When combined with exceptionally low levels of an activator (e.g., methyl alumoxane), the mixture actively polymerizes olefins to give polymers with a favorable balance of physical properties, including low density and narrow molecular weight distribution.

    Abstract translation: 公开了制备用于烯烃聚合的单中心催化剂的方法。 首先用烷基锂化合物将氮官能杂环脱质子化,然后在大约10℃的温度下,在烃溶剂中使该阴离子配体前体与约0.5当量的第4族过渡金属四卤化物反应,得到有机金属 含复合物的混合物。 当与异常低水平的活化剂(例如甲基铝氧烷)组合时,混合物主动聚合烯烃以产生具有良好平衡物理性能的聚合物,包括低密度和窄分子量分布。

    Prepolymerization catalyst for use in gas phase polymerization of olefins and process for producing the same
    145.
    发明授权
    Prepolymerization catalyst for use in gas phase polymerization of olefins and process for producing the same 有权
    用于烯烃气相聚合的预聚合催化剂及其制备方法

    公开(公告)号:US06645901B2

    公开(公告)日:2003-11-11

    申请号:US09820977

    申请日:2001-03-30

    Abstract: A prepolymerization catalyst for use in a gas phase polymerization of an olefin or combinations of olefins which comprises (A) a solid catalyst component comprising magnesium, halogen, titanium and an electron donor and having a weight-average particle diameter of 15 to 45 &mgr;m, (B) at least one organoaluminum compound and (C) a prepolymer of an ethylene and/or at least one &agr;-olefin, wherein the molar ratio of aluminum to titanium in the prepolymerization catalyst (Al/Ti ratio) is 3 to 11 (mol/mol), the weight ratio of the prepolymerization catalyst to the solid catalyst component (prepolymerization catalyst/solid catalyst component) is 2 to 35 (g/g), the content of volatile materials (VM) in the prepolymerization catalyst is 2.0% by weight or less, and the intrinsic viscosity [&eegr;] measured in tetralin at 135° C. is 2.0 dl/g or less, and a process for a production thereof. According to the present invention, a prepolymerization catalyst for gas phase polymerization of olefins showing a high activity in gas phase polymerization, not forming aggregates and coarse particles markedly at the time of prepolymerization, having a high bulk density and an excellent fluidity, not causing a marked entraining of prepolymerization catalyst and product powder out of the fluidized bed and nearly completely free from a formation of aggregates, at the time of gas phase polymerization, and giving an olefin polymer having a low content of cold xylene-soluble fraction can be provided.

    Abstract translation: 一种用于烯烃或烯烃组合的气相聚合的预聚合催化剂,其包含(A)包含镁,卤素,钛和电子给体的固体催化剂组分,其重均粒径为15至45μm, (B)至少一种有机铝化合物和(C)乙烯和/或至少一种α-烯烃的预聚物,其中预聚合催化剂中铝与钛的摩尔比(Al / Ti比)为3-11( mol / mol),预聚合催化剂与固体催化剂组分(预聚合催化剂/固体催化剂组分)的重量比为2〜35(g / g),预聚合催化剂中挥发物(VM)的含量为2.0% 以下,在135℃下在四氢化萘中测定的特性粘度η为2.0dl / g以下,以及其制造方法。根据本发明,提供了一种气相聚合用预聚合催化剂 烯烃聚合物 在气相聚合中具有高活性,在预聚合时不显着形成聚集体和粗颗粒,具有高堆积密度和优异的流动性,不会引起预聚合催化剂和产物粉末明显夹带在流化床之外,几乎 在气相聚合时完全没有聚集体的形成,并且可以提供具有低二甲苯可溶成分含量低的烯烃聚合物。

    Polymerisation catalysts
    146.
    发明授权
    Polymerisation catalysts 失效
    聚合催化剂

    公开(公告)号:US06642169B2

    公开(公告)日:2003-11-04

    申请号:US09775802

    申请日:2001-02-05

    Abstract: A catalyst system suitable for preparing substantially terminally unsaturated atactic polymers or copolymers of &agr;-olefins having a number average molecular weight in the range 300-500,000 comprises (A) a metallocene complex and (B) a cocatalyst comprising (i) a Group III Metal alkyl compound and (ii) a triaryl boron compound. Preferred metallocenes are those having alkyl ligands on the metal atom. The preferred Group III metal alkyl compound is triisobutyl aluminum and the preferred triaryl boron compounds is tris(pentafluorophenyl)boron.

    Abstract translation: 一种适用于制备基本上末端不饱和的无规立构聚合物或数均分子量在300-500,000的α-烯烃的共聚物的催化剂体系包括(A)茂金属络合物和(B)助催化剂,其包括(i)第III族金属 烷基化合物和(ii)三芳基硼化合物。 优选的金属茂是在金属原子上具有烷基配体的金属茂。 优选的III族金属烷基化合物是三异丁基铝,优选的三芳基硼化合物是三(五氟苯基)硼。

    Catalyst comprising palladium and zirconia
    147.
    发明授权
    Catalyst comprising palladium and zirconia 有权
    包含钯和氧化锆的催化剂

    公开(公告)号:US06620761B1

    公开(公告)日:2003-09-16

    申请号:US10375810

    申请日:2003-02-27

    Abstract: A catalyst composition which includes palladium and zirconium is formed as a suspension which can be coated onto a metal strip. The composition is formed by combining palladium nitrate with a solution of an alkyl ammonium hydroxide, and mixing the combination with a hydrous zirconium oxide, to form the suspension. The alkyl ammonium hydroxide is preferably tetramethylammonium hydroxide or tetrabutylammonium hydroxide. Nitric acid may be added to the palladium nitrate. The resulting composition shows superior activity and good adhesion to a metal strip. The composition can catalyze a combustion reaction, as well as a steam reforming reaction.

    Abstract translation: 包括钯和锆的催化剂组合物形成为可以涂覆在金属带上的悬浮液。 该组合物通过将硝酸钯与氢氧化烷基铵的溶液组合并将其与含水氧化锆混合而形成,以形成悬浮液。 烷基氢氧化铵优选为四甲基氢氧化铵或四丁基氢氧化铵。 可以向硝酸钯中加入硝酸。 所得组合物显示出优异的活性和对金属带的良好粘合性。 该组合物可以催化燃烧反应以及蒸汽重整反应。

    Catalyst for the production of olefin polymers
    148.
    发明授权
    Catalyst for the production of olefin polymers 有权
    用于生产烯烃聚合物的催化剂

    公开(公告)号:US06610627B2

    公开(公告)日:2003-08-26

    申请号:US10001381

    申请日:2001-10-24

    Abstract: A catalyst precursor having the formula: AqMLn wherein each A has the formula: M is a metal selected from the group consisting of Group elements; each L is a monovalent, bivalent, or trivalent anion; X and Y are each heteroatoms; Cyclo is a cyclic moiety; each R1 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group 13 to 17 elements, and two or more adjacent R1 groups may be joined to form a cyclic moiety; each R2 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group 13 to 17 elements, and two or more adjacent R2 groups may be joined to form a cyclic moiety; Q is a bridging group; each m is independently an integer from 0 to 5; n is an integer from 1 to 4; q is 1 or 2; and when q is 2, the A groups are optionally connected by a bridging group Z is provided. The catalyst precursor, when combined with an activating cocatalyst, is useful for the polymerization of olefins.

    Abstract translation: 一种具有下式的催化剂前体:其中每个A具有下式:M是选自组元素的金属;每个L是一价,二价或三价阴离子; X和Y各自是杂原子;环是环状的 部分;每个R 1是含有选自氢和第13至17族元素的1至50个原子的基团,并且两个或更多个相邻的R 1基团可以连接形成环状部分;每个R 2是含有1至 选自氢和第13至17族元素的50个原子和两个或更多个相邻的R 2基团可以连接形成环状部分; Q是桥连基团;每个m独立地是0-5的整数; n 是1至4的整数; q是1或2;当q是2时,A基团任选地通过桥连基团Z连接。 当与活化助催化剂组合时,催化剂前体可用于烯烃的聚合。

    Combination approach to chiral reagents or catalysts having amine or amino alcohol ligands
    150.
    发明授权
    Combination approach to chiral reagents or catalysts having amine or amino alcohol ligands 有权
    具有胺或氨基醇配体的手性试剂或催化剂的组合方法

    公开(公告)号:US06602817B1

    公开(公告)日:2003-08-05

    申请号:US09425498

    申请日:1999-10-22

    Inventor: Nicos A. Petasis

    Abstract: Functionalized amine derivatives are prepared by reacting an amine, a carbonyl derivative, and an organoboron compound under mild conditions. Organoboronic acids react with amines and alpha-hydroxy aldehydes to give anti-alpha-amino alcohols with very high diastereoselectivities (>99% de). When optically pure alpha-hydroxy aldehydes are used in this process, no racemization occurs and the products are obtained with very high enantioselectivities (>99% ee). The reaction also works with unprotected glyceraldehyde to give the corresponding amino diol derivatives, while unprotected carbohydrates give the corresponding amino polyols. The chiral amino alcohol products of this process or their derivatives, react further with metals or non-metals to give adducts that are effective catalysts for a variety of asymmetric reactions. Overall, the present invention relies on the facile synthesis of the chiral amino alcohol ligands for the rapid construction of combinatorial libraries of chiral catalysts. These libraries can then be used to identify the most suitable catalyst for a particular asymmetric transformation.

    Abstract translation: 官能化胺衍生物通过在温和条件下使胺,羰基衍生物和有机硼化合物反应来制备。 有机硼酸与胺和α-羟基醛反应得到具有非常高的非对映选择性(> 99%de)的抗α-氨基醇。 当在该方法中使用光学纯的α-羟基醛时,不会发生外消旋化,并且以非常高的对映选择性(> 99%ee)获得产物。 该反应也适用于未保护的甘油醛,得到相应的氨基二醇衍生物,而未保护的碳水化合物则得到相应的氨基多元醇。 该方法的手性氨基醇产物或其衍生物进一步与金属或非金属反应,得到作为各种不对称反应的有效催化剂的加合物。 总之,本发明依赖于手性氨基醇配体的容易合成,用于快速构建手性催化剂组合文库。 然后可以使用这些文库来识别用于特定不对称转化的最合适的催化剂。

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