1826. ---------------. [KOCH, H., AND HILBERATH, F.] [Polymerization of Monoolefins to Viscous Oils.] Brennstoff-Chem., vol. 23, 1942, pp. 67-73; Chem. Abs., vol. 36, 1942, p. 4701.

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Literature Abstracts

Properties of polymer lubricating oils, having the structure of the olefins charged to the polymerization process, were investigated. Most of the olefins used were obtained from the gasol and the light gasoline of the Kogasin process. The olefins with 5-7 C atoms, liquid at room temperature, were polymerized at 0° and 15°, respectively, under comparable conditions. Viscosities and yields of the resulting products vary greatly. It appears that these differences are due to the olefins belonging to different groups, of which the following four were noted: (1) Straight-chain a-olefins; (2) Branched a-olefins, the branch not starting on one of the double-bond C atoms; (3) Straight-chain β-olefins; (4) Branched β-olefins, with the branch starting on one of the double-bond C atoms. The reaction temperature is critical for the polymerization of the isobutene, while it is not critical when polymerizing olefins belonging to 1 of the groups 1-3.