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99 条记录 (耗时 0.027 秒)

    Process for the catalytic cyclodimerization of cyclic olefins
    13.
    发明授权
    Process for the catalytic cyclodimerization of cyclic olefins 失效
    环烯烃催化环二聚的方法

    公开(公告)号：US5545790A

    公开(公告)日：1996-08-13

    申请号：US164272

    申请日：1993-12-09

    申请人： Margaret M. Wu ,  Yusheng Xiong

    发明人： Margaret M. Wu ,  Yusheng Xiong

    IPC分类号： C07C2/42 ,  C07C2/00

    CPC分类号： C07C2/42 ,  C07C2103/90 ,  C07C2521/08 ,  C07C2523/26

    摘要： A catalytic process for the dimerization of norbornene and/or norbornadiene using a reduced valence state Group VIB metal oxide as the catalyst, preferably Cr(II) on a porous support such as silica. The product norbornene dimer or norbornadiene dimer is obtained in high yield and high stereospecificity at greater than 90 weight percent of the exo-trans-exo stereoisomer. The norbornene dimer is useful as a high energy density fuel. The norbornadiene dimer can be further functionalized to yield novel chemical intermediates or polymerized or copolymerized with other olefins. The norbornadiene dimer can also be hydrogenated for high energy fuel applications.

    摘要翻译： 使用还原价态VIB族金属氧化物作为催化剂使降冰片烯和/或降冰片二烯二聚的催化方法，优选在多孔载体如二氧化硅上的Cr（II）。 得到的产物降冰片烯二聚体或降冰片二烯二聚物以高产率和高立体定向性获得，其大于90重量％的外 - 反 - 立体异构体。 降冰片烯二聚体可用作高能量密度燃料。 降冰片二烯二聚体可以进一步官能化以产生新的化学中间体或与其它烯烃聚合或共聚。 降冰片二烯二聚体也可以被氢化用于高能燃料应用。

    Molecular weight control of olefin oligomers
    14.
    发明授权
    Molecular weight control of olefin oligomers 失效
    烯烃低聚物的分子量控制

    公开(公告)号：US5264642A

    公开(公告)日：1993-11-23

    申请号：US901282

    申请日：1992-06-19

    申请人： Margaret M. Wu

    发明人： Margaret M. Wu

    IPC分类号： B01J23/28 ,  C07C2/10 ,  C07C2/02

    CPC分类号： B01J23/28 ,  C07C2/10 ,  C07C2521/08 ,  C07C2523/26

    摘要： A process is disclosed to produce liquid oligomers of olefins, such as l-decene, with controlled molecular weight and with branch ratios below 0.19 and having higher viscosity indices than oligomers with higher branch ratios. These oligomers with low branch ratios and controlled molecular weight can be used as basestocks for many lubricants or greases with an improved viscosity-temperature relationship, oxidative stability, volatility, etc. They can also be used to improve viscosities and viscosity indices of lower quality oils. The olefins can, for example, be oligomerized in the presence of hydrogen over a supported and reduced metal oxide catalyst from Group VIB of the Periodic Table to give oligomers of controlled viscosity suitable for lubricant application. More particularly, the instant invention is directed to a process for the oligomerization of olefinic hydrocarbons containing 6 to 20 carbon atoms which comprises oligomerizing said hydrocarbon in the presence of hydrogen under oligomerization conditions, wherein the reaction product consists essentially of substantially non-isomerized olefins. For example, alpha olefins such as l-decene, and wherein a major proportion of the double bonds of the olefins or olefinic hydrocarbons are not isomerized, in the presence of a suitable catalyst, e.g., a supported and reduced metal oxide catalyst from Group VIB of the Periodic Table.

    摘要翻译： 公开了一种制备烯烃的液体低聚物的方法，例如1-癸烯，具有受控的分子量和分支比率低于0.19，并且具有比具有较高分支比的低聚物更高的粘度指数。 具有低分支比和可控分子量的这些低聚物可用作许多润滑剂或油脂的基础油料，具有改善的粘度 - 温度关系，氧化稳定性，挥发性等。它们还可用于改善较低质量油的粘度和粘度指数 。 烯烃可以例如在氢存在下在来自元素周期表VIB的负载且还原的金属氧化物催化剂上低聚，得到适于润滑剂应用的受控粘度的低聚物。 更具体地说，本发明涉及一种含有6至20个碳原子的烯烃低聚的方法，其中包括在低聚条件下在氢存在下使所述烃低聚，其中反应产物基本上由基本上非异构化的烯烃组成。 例如，α-烯烃如1-癸烯，其中大部分烯烃或烯烃的双键未被异构化，在合适的催化剂存在下，例如来自VIB族的负载和还原的金属氧化物催化剂 的周期表。

    High VI lubricant blends from slack wax
    15.
    发明授权
    High VI lubricant blends from slack wax 失效
    高VI润滑剂从松散的蜡混合

    公开(公告)号：US5208403A

    公开(公告)日：1993-05-04

    申请号：US876801

    申请日：1992-04-28

    申请人： J. Scott Buchanan ,  Margaret M. Wu

    发明人： J. Scott Buchanan ,  Margaret M. Wu

    IPC分类号： C10G57/02 ,  C10G69/12

    CPC分类号： C10G57/02 ,  C10G2400/10

    摘要： Lubricant compositions comprise blends or mixtures of low viscosity, 3-8 cS e.g. about 5 cS(100.degree. C.), HVI lube basestock with higher viscosity, 15 cS+e.g. 30+ cS(100.degree. C.) HVI PAO lube basestock produced from slack wax by thermal cracking to alpha olefins followed by Lewis acid catalyzed oligomerization of the alpha olefin mixture to lube base stock. Blending these components in appropriate proportions produces lube basestock having viscosities in the range of 8-15 cS (100.degree. C.) from which material suitable for the formulation of 10W-30 automobile engine lube can be produced. The blends are notable for exhibiting high VI values greater than that of either component of the blend.

    摘要翻译： 润滑剂组合物包括低粘度的混合物或混合物，例如3-8cS。 约5cS（100℃），具有较高粘度的HVI润滑油基础油，15cS + 30℃cS（100℃）HVI PAO润滑油基础油由松散的蜡通过热裂解生成α-烯烃，随后将路易斯酸催化低聚α-烯烃混合物润滑基础油。 以适当的比例混合这些组分可产生具有8-15cS（100℃）范围内的粘度的润滑油基础油，由此可以制备适于制备10W-30汽车发动机润滑油的材料。 共混物显示出高于混合物的任一组分的高VI值。

    Lubricant oligomers of C.sub.2 -C.sub.5 olefins
    16.
    发明授权
    Lubricant oligomers of C.sub.2 -C.sub.5 olefins 失效
    C2-C5烯烃的润滑低聚物

    公开(公告)号：US5068476A

    公开(公告)日：1991-11-26

    申请号：US647102

    申请日：1991-01-29

    申请人： Margaret M. Wu ,  Suzzy C. Ho

    发明人： Margaret M. Wu ,  Suzzy C. Ho

    IPC分类号： C10G50/02 ,  C10M107/10

    CPC分类号： C10M107/10 ,  C10G50/02

    摘要： Liquid olefin oligomers are produced by the oligomerization of C.sub.2 -C.sub.5 alpha olefin alone or with ethylene as a co-monomer. The oligomers having high viscosity index and a structure which is characterized by a regio-irregularity of at least 20 percent, usually from 20 to 40 percent. The olefins are oligomerized with a reduced valence state chromium oxide catalyst on a silica support, usually at a temperature from 90.degree. to 250.degree. C., although lower temperatures can also be used with ethylene as a con-monomer. The liquid oligomerization products can be produced in wide range of viscosities including the direct production of low viscosity lubricants having high viscosity index.

    摘要翻译： 液体烯烃低聚物是通过单独的C 2 -C 5α-烯烃或作为共聚单体的乙烯的低聚来制备的。 具有高粘度指数的低聚物和其特征在于区域不均匀性为至少20％，通常为20至40％的结构。 烯烃在二氧化硅载体上通常用低价态的氧化铬催化剂低聚，通常在90-250℃的温度下，尽管较低的温度也可以与乙烯作为共聚单体一起使用。 液体低聚产物可以在宽的粘度范围内生产，包括直接生产具有高粘度指数的低粘度润滑剂。

    Process for improving thermal stability of synthetic lubes
    17.
    发明授权
    Process for improving thermal stability of synthetic lubes 失效
    改善合成润滑剂热稳定性的方法

    公开(公告)号：US4967032A

    公开(公告)日：1990-10-30

    申请号：US402373

    申请日：1989-09-05

    申请人： Suzzy C. Ho ,  Margaret M. Wu

    发明人： Suzzy C. Ho ,  Margaret M. Wu

    IPC分类号： B01J23/26 ,  B01J27/06 ,  B01J27/08 ,  B01J27/16 ,  B01J31/10 ,  C10G50/02 ,  C10G57/02 ,  C10G69/12 ,  C10M105/04 ,  C10N20/02

    CPC分类号： C10G69/126 ,  C10G2400/10

    摘要： A process is disclosed for improving the thermal stability of polyalpha-olefin lubricants by contacting the lubricant with an acidic catalyst for a time and at a temperature sufficient to achieve the skeletal isomerization of the molecular structure of the lubricant. The reaction is carried out preferably on unhydrogenated synthetic lubricants in contact with Lewis acid catalysts. Following the isomerization reaction, the unsaturated lubricant is hydrogenated to produce lubricant with better thermal stability. Surprisingly, when the isomerization reaction is carried out using unsaturated oligomer produced from the oligomerization of alpha-olefins in contact with reduced Group VIB metal oxide catalyst on porous support as starting material the viscometric properties of the lubricant, e.g., viscosity and VI, are not significantly altered, although the thermal stability of the lubricant is substantially increased. The reaction of the present invention may be carried out in the presence of a solvent or neat. Improvements in thermal stability are observed over a wide range of catalyst concentration. Concentrations of about 10 weight percent are preferred with aluminum chloride catalyst.

    Conversion of methanol and methyl ether to light olefins with ZSM-45 in presence of hydrogen
    18.
    发明授权
    Conversion of methanol and methyl ether to light olefins with ZSM-45 in presence of hydrogen 失效
    在氢存在下，用ZSM-45将甲醇和甲醚转化成轻质烯烃

    公开(公告)号：US4912281A

    公开(公告)日：1990-03-27

    申请号：US296405

    申请日：1989-01-09

    申请人： Margaret M. Wu

    发明人： Margaret M. Wu

    IPC分类号： B01J29/70 ,  C07C1/20

    CPC分类号： C07C1/20 ,  B01J29/70 ,  B01J2229/20 ,  C07C2529/70 ,  Y02P20/582 ,  Y02P30/42

    摘要： A process is disclosed for converting a methanol and/or methyl ether-containing reactant feed along with a hydrogen-containing gaseous diluent to a light olefin-containing product over a ZSM-45 aluminosiloicate zeolite based catalyst composition. By using such ZSM-45 zeolite catalysts, methanol and/or methyl ether can be advantageously converted to an olefin-containing hydrocarbon product enriched in C.sub.2 to C.sub.4 olefins. The hydrogen-containing gaseous diluent is co-fed to the conversion reaction zone and the conversion reaction is conducted at a pressure of at least about 3 atmospheres in order to enhance catalyst lifetime.

    摘要翻译： 公开了一种用于将含甲醇和/或甲基醚的反应物原料与含氢气体稀释剂一起通过ZSM-45铝硅酸盐沸石基催化剂组合物转化成含轻烯烃的产物的方法。 通过使用这种ZSM-45沸石催化剂，甲醇和/或甲基醚可以有利地转化为富含C2至C4烯烃的含烯烃的烃产物。 将含氢气态稀释剂共同进料至转化反应区，转化反应在至少约3个大气压的压力下进行，以增加催化剂寿命。