The utilization of propyrene is an important subject next to ethylene in the petrochemical industry. This report concerns with -the syntheses of some chemicals from propylene as the starting material and its outline is as follows: 1) Synthesis of 2-methylpentene-1.
Some synthetic conditions of 2-methylpentene-1 by Ziegler's report were examined. 2-Methylpentene-1 was obtained with a purity of 98%, and tripropylal uninium was better to obtain this olefin than triethylaluminium.
2) Synthesis of isoprene.
The catalytic demethanizafion of 2-methylpentene-1 using silica-alumina-ferric oxide and the catalytic dehydrogenation of 2-methylbutene-1 using the catalyst as standard oil-1707 type were studied.
By using the catalyst, the reaction temperature for the demethanization could be made lower by 100-300°C than that of pyrolysis and the yield of isoprene was 47%.
3) Oxo reaction of 2-methylpentene-1.
The effect of cobalt salts on the yield of alcohols and the components of the product were investigated. The main product, 3-methylhexanol was identified by infrared analysis.
4) Liquid phase oxidation of cumene.
The effect of impurities in the oxidation of cumene, especially recycled cumene wass investigated. From this result, the measurement of ultraviolet spectrum was proposed as the percepting method of the purity of cumene.
5) Synthesis of tripropyrene.
Tripropylene was prepared by the polymerizationof propylene in the pressure of I.C.I. phosphoric catalyst, and the component of the produst was compared with that by Armco Co. Although both was same in component, it was different in composition.
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