The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 1979
Filed:
May. 12, 1977
Pavel Y Gokhberg, Volgograd, SU;
Boris N Gorbunov, Tambov, SU;
Alexandr P Khardin, Volgograd, SU;
Vladimir L Rudkovsky, Volzhsky Volgogradskoi oblasti, SU;
Valentin M Belyaev, Volzhsky Volgogradskoi oblasti, SU;
Anatoly I Lukashov, Moscow, SU;
Ljudmila V Shpantseva, Volzhsky Volgogradskoi oblasti, SU;
Vitaly V Orlyansky, Volzhsky Volgogradskoi oblasti, SU;
Other;
Abstract
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.