利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

81 条记录 (耗时 0.018 秒)

    PROCESS TO PRODUCE LOW VISCOSITY POLY-ALPHA-OLEFINS
    78.
    发明申请
    PROCESS TO PRODUCE LOW VISCOSITY POLY-ALPHA-OLEFINS 审中-公开
    生产低粘度聚α-烯烃的方法

    公开(公告)号：WO2007011973A1

    公开(公告)日：2007-01-25

    申请号：PCT/US2006/027943

    申请日：2006-07-19

    申请人： EXXONMOBIL CHEMICAL PATENTS INC. ,  WU, Margaret ,  COKER, Catalina, L. ,  WALZER, John, F. ,  JIANG, Peijun

    发明人： WU, Margaret ,  COKER, Catalina, L. ,  WALZER, John, F. ,  JIANG, Peijun

    IPC分类号： C08F210/14 ,  C10M143/08 ,  C08F210/04

    CPC分类号： C07C11/02 ,  C07C2/02 ,  C07C2/34 ,  C07C5/05 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65925 ,  C08F4/65927 ,  C08F10/14 ,  C08F110/14 ,  C08F210/04 ,  C08F210/14 ,  C10M107/10 ,  C10M143/08 ,  C10M2205/026 ,  C10M2205/0265 ,  C10M2205/028 ,  C10M2205/0285 ,  C10N2220/021 ,  C10N2220/022 ,  C10N2220/023 ,  C10N2220/024 ,  C10N2220/025 ,  C10N2220/026 ,  C10N2220/028 ,  C10N2220/033 ,  C10N2270/00 ,  C08F2500/03 ,  C08F2500/17 ,  C08F2500/20 ,  C08F2500/02

    摘要： This invention relates to a process to produce a polyalpha-olefin comprising: 1) contacting one or more alpha-olefm monomers having 3 to 24 carbon atoms with an unbridged substituted bis cyclopentadienyl transition metal compound having: 1) at least one non-isoolefm substitution on both cyclopentadientyl rings, or 2) at least two substitutions on at least one cyclopentadienyl ring, a non-coordinating anion activator, and optionally an alkyl- aluminum compound, where the molar ratio of transition metal compound to activator is 10:1 to 0.1 :1, and if the alkyl aluminum compound is present then the molar ratio of alkyl aluminum compound to transition metal compound is 1 :4 to 4000:1, under polymerization conditions wherein: i) hydrogen is present at a partial pressure of Q.I to 50 psi, based upon the total pressure of the reactor or the concentration of the hydrogen is from 1 to 10,000 ppm or less by weight ; ii) wherein the alpha-olefin monomer(s) having 3 to 24 carbon atoms are present at 10 volume % or more based upon the total volume of the catalyst/activator/alkylaluminum compound solutions, monomers, and any diluents or solvents present in the reaction; iii) the residence time of the reaction is at least 5 minutes; iv) the productivity of the process is at least 43,000 grams of total product per gram of transition metal compound; v) the process is continuous or semi-continuous, and vi) the temperature in the reaction zone does not rise by more than 10 °C during the reaction; and vii) ethylene is not present at more than 30 volume % of the monomers entering the reaction zone; and 2) obtaining a polyalpha-olefin (PAO), optionally hydrogenating the PAO, wherein the PAO comprises at least 50 mole% of a C3 to C24 alpha-olefin monomer, and wherein the PAO has a kinematic viscosity at 1000C of 20 cSt or less.

    摘要翻译： 本发明涉及一种生产聚α-烯烃的方法，包括：1）使一个或多个具有3至24个碳原子的α-烯烃单体与未桥连的取代的双环戊二烯基过渡金属化合物接触，所述化合物具有：1）至少一个非等摩尔取代基 在两个环戊二烯基环上，或2）至少一个环戊二烯基环上的至少两个取代基，非配位阴离子活化剂和任选的烷基铝化合物，其中过渡金属化合物与活化剂的摩尔比为10:1至0.1 ：1，如果存在烷基铝化合物，则在聚合条件下，烷基铝化合物与过渡金属化合物的摩尔比为1:4至4000:1，其中：i）氢分压为QI至50 基于反应器的总压力或氢的浓度为1至10,000ppm或更低的重量比; ii）其中基于催化剂/活化剂/烷基铝化合物溶液，单体和存在于所述催化剂/活化剂/烷基铝化合物溶液中的任何稀释剂或溶剂的总体积，其中具有3至24个碳原子的α-烯烃单体以10体积％或更多存在 反应; iii）反应停留时间为至少5分钟; iv）该方法的生产率至少为每克过渡金属化合物总产品43,000克; v）该方法是连续或半连续的，和vi）反应区中的温度在反应期间不会升高超过10℃; 和vii）在超过30体积％的进入反应区的单体中不存在乙烯; 和2）获得聚α-烯烃（PAO），任选地氢化PAO，其中PAO包含至少50摩尔％的C 3至C 24α-烯烃单体，并且其中PAO在1000℃下的运动粘度为20cSt或 减。