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Nauchno-issledovatelsky Institut Khimikatov Dlya Polimernykh Materialov

Boris N Gorbunov

Anatoly I Lukashov

Alexandr P Khardin

Valentin M Belyaev

Vitaly Vasilievich Orlyansky

Ljudmila V Shpantseva

Vladimir P Dudin

Alexandr A Ovchinnikov

Vyacheslav I Khlybov

Jury M Rapoport

Vyacheslav V Konov

Pavel Y Gokhberg

Valentin V Davituliani

Vladimir L Rudkovsky

Evgenia S Makarova

Svetlana I Zaitseva

Process for producing phthalimides of alkali metals

The method of preparing isoprene and isoamylenes consists in that a gaseous mixture of isobutylene and methyl alcohol is brought in contact with a catalyst, namely aluminum oxide or tantalum pentoxide, at a temperature of 250 to 500.degree. C. It is recommendable that use should be made of aluminum oxide modified with an oxide of at least one of the following elements: molybdenum, tungsten, chromium, zirconium, titanium, vanadium, and cobalt. Moreover, it is possible to use aluminum oxide modified with a sulphate of at least one of the following elements: zirconium and chromium. A combination of both modifications is also possible. The yield of isoprene obtained by the proposed method is 16 to 20 mol. percent, with respect to the passed methyl alcohol, and the yield of isoamylenes is 25 to 30 mol. percent.

Method of preparing isoprene and isoamylenes

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Tambov, undefined

Boris N Gorbunov