Method of producing liquid olefin polymer
AssigneeLion Fat & Oil Co., Ltd.
InventorsHiroshi Isa, Hiroshi Mandai, Toshiyuki Ukigai, Anri Tominaga, Ryozo Taniyasu, Masuzo Nagayama
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Abstract
A method for producing a liquid olefin polymer which comprises polymerizing an .alpha.-olefin having 6 - 14 carbon atoms or mixtures thereof, in the presence of a catalyst consisting of an alkali metal hydride, a halide of an element selected from boron and aluminum and a titanium halide, or a catalyst in which metallic lithium or sodium is added to those catalyst ingredients.
Claims20
The process of preparing a synthetic lubricating oil, which comprises:
- dissolving in an inert organic solvent or dispersing in a liquid hydrocarbon a halide substance selected from the group consisting of BCl.sub.3, AlCl.sub.3, AlBr.sub.3, Al(C.sub.2 H.sub.5) Cl.sub.2 and mixtures thereof, adding an alkali metal hydride to the thus-formed solution or dispersion, distilling off solvent from the solution to concentrate said solution, adding to said concentrated solution or to said dispersion TiCl.sub.4 and a liquid monomer selected from the group consisting of .alpha.-olefins having from 6 to 14 carbon atoms and mixtures thereof, and polymerizing said monomer at a temperature of above 70.degree.C and below 200.degree.C, the polymerization reaction mixture containing from 0.2 to 5.0 mol percent of TiCl.sub.4 based on the monomer, from 0.5 to 2.0 mols of said halide substance per mol of TiCl.sub.4 and from 0.5 to 6.0 mol of alkali metal hydride per mol of said halide substance;
- and recovering from the polymerization reaction mixture a liquid synthetic lubricating oil consisting essentially of oligomers of said monomer.
The process of claim 3 wherein said monomer is selected from the group consisting of hexene-1, octene-1, tridecene-1, and mixtures thereof.
The process of claim 6 wherein said alkali metal hydride is selected from the group consisting of LiH and NaH.
The process of preparing a synthetic lubricating oil, which comprises:
- dissolving in an inert organic solvent or dispersing in a liquid hydrocarbon a halide substance selected from the group consisting of BCl.sub.3, AlCl.sub.3, AlBr.sub.3, Al(C.sub.2 H.sub.5) Cl.sub.2 and mixtures thereof, adding an alkali metal hydride and lithium metal or sodium metal to the thus-formed solution or dispersion, distilling off solvent from the solution to concentrate said solution, adding to said concentrated solution or to said dispersion TiCl.sub.4 and a liquid monomer selected from the group consisting of .alpha.-olefins having from 6 to 14 carbon atoms and mixtures thereof, and polymerizing said monomer at a temperature of above 70.degree.C and below 200.degree.C, the polymerization reaction mixture containing from 0.2 to 5.0 mol percent of TiCl.sub.4 based on the monomer, from 0.1 to 5 mol percent of lithium metal or sodium metal based on the monomer, from 0.5 to 2.0 mols of said halide substance per mol of TiCl.sub.4 and from 0.5 to 6.0 mol of alkali metal hydride per mol of said halide substance;
- and recovering from the polymerization reaction mixture a liquid synthetic lubricating oil consisting essentially of oligomers of said monomer.
Dependencies are inferred from the claim text.