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    • 2. 发明申请
    • Process to produce low viscosity poly-alpha-olefins
    • 生产低粘度聚-α-烯烃的方法
    • US20070043248A1
    • 2007-02-22
    • US11489313
    • 2006-07-19
    • Margaret WuCatalina CokerJohn WalzerPeijun Jiang
    • Margaret WuCatalina CokerJohn WalzerPeijun Jiang
    • C07C2/02
    • C07C11/02C07C2/02C07C2/34C07C5/05C08F4/65908C08F4/65912C08F4/65925C08F4/65927C08F10/14C08F110/14C08F210/04C08F210/14C10M107/10C10M143/08C10M2205/026C10M2205/0265C10M2205/028C10M2205/0285C10N2220/021C10N2220/022C10N2220/023C10N2220/024C10N2220/025C10N2220/026C10N2220/028C10N2220/033C10N2270/00C08F2500/03C08F2500/17C08F2500/20C08F2500/02
    • This invention relates to a process to produce a polyalpha-olefin comprising: 1) contacting one or more alpha-olefin monomers having 3 to 24 carbon atoms with an unbridged substituted bis cyclopentadienyl transition metal compound having: 1) at least one non-isoolefin 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 0.1 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 100° C. of 20 cSt or less.
    • 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)至少一种非异烯烃取代 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0.1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,单体和存在于该溶剂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上升超过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100℃下具有运动粘度 20 cSt以下。