Use of alkylaluminum compounds and hydroxyl-containing compounds to initiate polymerization of ethylene with chromium oxide catalysts Patent #: 4564660
ApplicationNo. 06/839638 filed on 03/14/1986
US Classes:585/513, And N-, P-, or S-containing502/117, Component B metal is other than titanium or vanadium526/100, Contains non-metal organic N, O, S or P containing compound526/141, Non-metal material is organic nitrogen-containing compound526/142, Non-metal material is organic oxygen-containing compound585/512Al-and transition metal-containing
ExaminersPrimary: Pal, Asok
Attorney, Agent or Firm
International ClassesC07C 2/32 (20060101)
C07C 2/00 (20060101)
AbstractA process for the trimerization of an olefin selected from the group consisting of ethylene, propylene, 1-butene, and mixtures thereof comprising passing the olefin in contact with a catalyst comprising the reaction product of (i) a chromium compound, which will provide active catalytic species under trimerization conditions; (ii) a hydrocarbyl aluminum hydrolyzed with about 0.8 to about 1.1 moles of water per mole of aluminum compound; and (iii) a donor ligand selected from the group consisting of hydrocarbyl isonitriles, amines, and ethers wherein the aluminum to chromium mole ratio is in the range of up to about 200 to one and the ligand to chromium mole ratio is in the range of up to about 100 to one.