A process for producing alpha-olefin dimers comprises contacting, at a temperature of 80° C. or more, a feedstock comprising at least one C8+ (linear) alpha-olefin with a catalyst system comprising activator and one or more catalyst compounds represented by the formula:
where M is a Group 4 metal; n is 1, 2, or 3; RA is hydrogen or a C1 to C10 alkyl; each of R1, R2, R3, R4, R5, R6, R7, and R8 is independently selected from hydrogen and C1 to C10 alkyl; each X is independently selected from the group consisting of hydrocarbyl radicals having from 1 to 20 carbon atoms, hydrides, amides, alkoxides, sulfides, phosphides, halides, and a combination thereof, (two X's may form a part of a fused ring or a ring system), the contacting being conducted under conditions effective to oligomerize at least part of C8+ alpha-olefin to produce an oligomerized product containing at least 30 wt % of the alpha-olefin dimer and at least 80 mol % of vinylidene unsaturation, where the conversion of the alpha olefin is at least 10 wt %, based upon the weight of the alpha olefin monomer entering the reactor and the weight of dimer produced.
一种生产α-烯烃二聚体的工艺,包括在 80° C 或更高温度下,将包含至少一种 C8+(线性)α-烯烃的原料与催化剂体系接触,该催化剂体系包含活化剂和一种或多种由式表示的催化剂化合物:
其中 M 为第 4 族
金属;n 为 1、2 或 3;RA 为氢或 C1 至 C10 烷基;R1、R2、R3、R4、R5、R6、R7 和 R8 中的每一个独立地选自氢和 C1 至 C10 烷基;每个 X 独立地选自由 1 至 20 个碳原子的烃基、
氢化物、酰胺、烷氧基化物、
硫化物、
磷化 物、卤化物及其组合组成的组、在使至少部分 C8+ α-烯烃低聚的有效条件下进行接触,以产生含有至少 30 重量%的 α-烯烃二聚体和至少 80 摩尔%的亚
乙烯基不饱和的低聚产物,其中根据进入反应器的 α-烯烃单体重量和产生的二聚体重量计算,α-烯烃的转化率至少为 10 重量%。