Other

Jury I Michurov

Grigory I Rutman

Alexandr G Liakumovich

Yakov Abramovich Gurvich

Simona T Kumok

Evgeny L Styskin

Vladimir A Yanshevsky

Zoya S Shalimova

Galina G Latysheva

Jury I Volodin

Anna I Rybak

Boris T Pantukh

Rufina A Filipova

Valentina J Borgardt

Sofya A Egoricheva

Igor J Logutov

A method for the production of 2,4,6-tri(3,5-ditertiary butyl-4-hydroxybenzyl)mesitylene which resides in treating a mesitylene solution in chloroalkane simultaneously with sulfuric acid used as a catalyst and a solution of 2,6-ditertiary butyl-4-methoxymethylphenol or bis-3,5-ditertiary butyl-4-hydroxybenzyl ether in chloroalkane at a temperature of -20.degree. to +20.degree. C. This results in a reaction mixture consisting of an acid phase and an organic phase including the target product. The phases are separated. The organic phase is subjected to neutralization by the treatment thereof with gaseous ammonia used as an alkaline agent. The precipitate of ammonium sulfate is separated and chloroalkane is removed from the remaining solution. The proposed method makes it possible to obtain the target product with a yield of 88 to 90% and a melting temperature of 239.degree. to 239.5.degree. C. The method prevents the formation of effluents, and the amount of phenol wastes is considerably reduced.

Method for the production of 2,4,6-tri(3,5-ditertiary

A method of purifying alkylphenyl from impurities contained therein resides in continuous crystallization of alkylphenol and continuous washing of the resulting crystals with a solvent. Washing of the crystals is performed in a layer formed by said crystals, the layer moving downward continuously, with a solvent moving upward. The invention makes it possible to purify alkylphenols effectively and produce them with a high degree of purity with minimum losses of the product, as well as to reduce consumption of the solvent.

Method of purifying alkylphenol

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Bashkirskaya ASSR Sterlitamak, undefined

Jury I Michurov