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Nikolai Vasilievich Khaber

Alexei Alexeevich Chuiko

Anatoly Borisovich Kondratenko

Valentin Anatolievich Tertykh

Alexandr Fedorovich Trukhin

Oleg Nikolaevich Romanenko

Ivan Andreevich Barannik

Viktor Georgievich Raskatov

Vladimir Dmitrievich Yazev

Elena Alexandrovna Chuiko

Ivan Yakovlevich Emelyanov

Jury Alexandrovich Sergeev

Viktor Stepanovich Alontsev

Valery Mikhailovich Maschenko

Natalya Alexandrovna Voronova

Mikhail Nikolaevich Kljuchnik

Vilyam Alexandrovich Sobolev

Valery Alexeevich Startsev

Vladimir Dmitrievich Marfin

Viktor Ivanovich Borodin

Alexei Dmitrievich Chugai

Jury Nikolaevich Boiko

Valery Sergeevich Belosludtsev

Vyacheslav Valentinovich Pavlov

Anatoly Filippovich Shevchenko

Vasily Ivanovich Vatamanjuk

Mikhail Ivanovich Khoma

Malvina Leontievna Galashina

Alexandr Petrovich Bogdanov

Gennady Ivanovich Belkin

Nikolai Yakovlevich Shish

Jury Davydovich Shaposhnikov

Alexandr Nikolaevich Kutin

A method of producing aminated silica compounds, characterized in that starting silica is heated at a temperature of 200.degree.-500.degree. C for several hours in the absence of oxygen and moisture, then cooled down to a temperature of 100.degree.-250.degree. C and treated at this temperature with an amino alcohol. The resulting product is characterized in containing grafted amino groups, their concentration being much higher than that of free hydroxyl groups on the surface of the starting silicas. This feature enables to improve the properties of aminated silica compounds and, particularly, to increase adsorption capacity and activity thereof when said compounds are used as polymer fillers.

Method of producing aminated silica compounds

A method of producing fine-disperse alkylated silica compounds, characterized in that starting fine-disperse silica is subjected to treatment with water vapors at a temperature of 110.degree.-120.degree. C to attain the humidification degree of from 2 to 40 micromoles H.sub.2 O/m.sup.2 SiO.sub.2, the thus humidified silica being then treated with vapors of alkylchlorosilane at a temperature of 250.degree. to 310.degree. C. The method of the invention allows controlling the concentration of grafted alkyl groups in the resultant product within the range of from 4.7 to 8.0 micromoles of grafted alkyl groups per m.sup.2 of the surface of SiO.sub.2. Starting silica can be modified with oxides of metals, such as aluminium, titanium, iron or zirconium oxides, the resultant products exhibiting good hydrophobic properties when used as thickeners for lubrication materials.

Method of producing fine disperse alkylated silica compounds

The invention relates to magnesium-containing mixtures, in the form of granules of a particular shape, made by the introduction of a salt to liquid metal at a temperature of 670.degree.-720.degree.C, heated to a temperature of 670.degree.-730.degree.C, composed of metal chlorides and fluorides not reducible by magnesium, taken separately or in combination, and having an initial crystallization temperature below that of the granulated metal, and a density at the temperature of 670.degree.-730.degree.C equal to 0.95-1.2 of the density of the metal. The molten mixture is atomized by centrifugal force with subsequent cooling of the thus produced discrete particles by air flow. The mixture obtained in producing granules of magnesium or its alloys comprises in weight per cent: 65-97 of granulated magnesium, 0.3-16 of magnesium and alkali metal chlorides, 0.1-10 of one of the fluorides, up to 3 of alkaline-earth metal chlorides, and up to 6 of magnesium oxide. The above mixture can also comprise in weight per cent: 60-97 of granulated magnesium alloy, 0.3-16 of magnesium and alkali metal chlorides, 0.1-10 of one of the fluorides, 0.3-10 of alkaline-earth metal chlorides, and not over 5.0 of magnesium oxide.

Granules of magnesium and its alloys

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Kalush, Ivano-Frankovskoi oblasti, undefined

Nikolai Vasilievich Khaber