Über Naphthenbildung. III. Mitteilung: Die Produkte der Druckerhitzung von Amylen und Hexylen

The Catalytic Polymerization of Propylene

“…Regarding the formation of compounds intermediate between those of a multiple carbon number of the original olefin, several examples are described in the literature (1,5,(12)(13)(14). They seem to indicate that in the polymerization of olefins of low molecular weight the formation of a continuous chain of lower homologs is a rather general reaction.…”

“…Although no other fraction has been investigated as to the nature of its saturated content, it is assumed here that whatever saturation is present is due to paraffin hydrocarbons. In the case of the C10-C12 group this might be open to question as there is an example in the polymerization with anhydrous aluminum chloride where the lower fractions consist of paraffins and the higher ones of cycloparaffins (1,5).…”

Synthetic Lubricating Oils Relation between Chemical Constitution and Physical Properties

“…Time and Temperature-The yield of viscous oil was higher, the lower the temperature of polymerization, provided that all the olefins were polymerized. In this connection Lebedev (50) and others reported that the lower the temperature of polymerization of unsaturated hydrocarbons, the greater was the increase in viscosity; Engler and Routala (24) found that the proportion of naphthenes obtained in the polymerization of amylene with aluminum chloride was less at lower temperatures; Weizmann and Legg (90) obtained considerable amounts of naphthenes by polymerization of butylene at relatively high temperatures. As expected, longer periods of agitation were required at the lower temperatures.…”