Other

Viktor V Fedorov

Jury N Bocharov

Nikolai S Nametkin

Viktor Alexandrovich Kabanov

Marina Alexandrovna Martynova

Vladimir Ivanovich Smetanjuk

Valery G Popov

Vladimir Dmitrievich Tjurin

Naum Borisovich Zhadanovsky

Ruf A Kalinenko

Sergel Pavlovich Gubin

Vladimir Alexandrovich Kozin

Evgeny A Feigin

Ruslan Yakovlevich Barashkov

Ilya R Cherny

Leonid Ivanovich Larionov

Vladimir B Titov, Deceased

By Ljudmila Chervoneva, Administratrix

A catalyst for the (co)polymerization of ethylene, .alpha.-olefines, conjugated and non-conjugated dienes, a method of preparation, and a mode of using same. The catalyst contains from 0.1 to 50 wt.% of a compound of a transition metal of the IV-VIII Groups chemically combined and distributed over the surface and within the volume of a rubber-like polymeric carrier containing from 1 to 50 wt.% of electron-donor and/or electron-acceptor groups and is in the form of a gel which is swellable, but insoluble in the reaction medium. A co-catalyst comprising an organic compound of a metal of Groups I-III is employed chemically combined and/or non-combined with the catalyst. The catalyst is prepared by mixing the metal compound with said carrier swollen or dissolved in a solvent, and by extracting the resulting compound with a solvent. (Co)polymerization is effected in a solvent such as a hydrocarbon or a hologenated hydrocarbon derivative at a temperature not exceeding 200.degree. C. under a pressure ranging from 0 to 100 atm by separating the catalyst from the (co)polymer during or after the reaction and recycling it back to the (co)polymerization.

Polymeric gel catalyst for polymerization of .alpha.-olefines,

A process for purifying aromatic hydrocarbons contained in liquid products of refining petroleum fractions or liquid products of coal coking or low-temperature carbonization from non-aromatic hydrocarbons which comprises heat-treatment of said liquid products at a temperature ranging from 750.degree. to 950.degree. C. under a pressure within the range of from 1 to 10 atm in the presence of acyclic C.sub.2 -C.sub.4 hydrocarbons employed separately or in various combinations at a weight ratio between said acyclic hydrocarbons and said liquid products being of at least 0.3. The heat-treatment results in a vapor-gas mixture which is cooled to isolate a condensate containing predominantly aromatic hydrocarbons. The process is technologically simple and makes it possible to purify aromatic hydrocarbons practically without decomposition thereof.

Process for purifying aromatic hydrocarbons

A catalyst for the (co)polymerization of ethylene, .alpha.-olefines, conjugated and non-conjugated dienes, a method of preparation and a mode of using same. The catalyst contains from 0.1 to 50 wt.% of a compound of a transition metal of the IV-VIII Groups chemically combined and distributed over the surface and within the volume of a rubber-like polymeric carrier containing from 1 to 50 wt.% of electron donor and/or electron-acceptor groups and is in the form of a gel which is swellable, but insoluble in the reaction medium. A co-catalyst comprising an organic compound of a metal of Groups I-III is employed chemically combined and/or non-combined with the catalyst. The catalyst is prepared by mixing the metal compound with said carrier swollen or dissolved in a solvent, and by extracting the resulting compound with a solvent. (Co)polymerization is effected in a solvent such as a hydrocarbon or a hologenatedhydrocarbon derivative at a temperature not exceeding 200.degree. C. under a pressure ranging from 0 to 100 atm by separating the catalyst from the (co)polymer during or after the reaction and recycling it back to the (co)polymerization.

Catalyst for (co) polymerization of ethylene, aplha-olefines, conjugated

A method of purifying crude petroleum and primary refining products of their sulfur, sulfur compounds, nitrogen- and oxygen-containing compounds which comprises treating crude petroleum or virgin petroleum stocks with complexes or salts of transition metals (.pi. -complexes of transition metals), salts or .pi. -allylic complexes of platinum metals and carbonyl complexes of transition metals at a temperature of 80.degree.-120.degree. C, followed by separating the purified target product from the resulting reaction mixture. stability The method of the invention makes it possible to effect petroleum product purification as a single-stage process and, in contrast to the available methods, dispenses with the employment of hydrogen, catalysts, and aqueous alkalies. The petroleum products treated by the present method are completely free of hydrogen, sulfur, mercaptan and disulfide sulfur, the content of total sulfur being substantially reduced (by a factor of 2 to 6), another beneficial effect being a 20-50% reduction of the content of nitrogen- and oxygen-containing compounds and naphthenic compounds, thereby enhancing essentially the marketability of petroleum products and improving such properties as colour, odor, stability and gum formation resistance.

Method of purifying crude petroleum and primary refining products

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Moscow, Russia

Viktor V Fedorov