Patents by Inventor Valerian Mikhailovich Sobolev

Valerian Mikhailovich Sobolev has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of preparing 2,6-di-tert.butylphenol
    Patent number: 4113976
    Abstract: A method of preparing 2,6-di-tert.butylphenol comprises alkylation of phenol with isobutylene at a temperature within the range of from 100.degree. to 110.degree. C in the presence, as a catalyst, of phenyloxyorthotertbutylphenoxyhydroaluminum acid of the formula:[(OC.sub.6 H.sub.5).sub.n (ortho-tert.C.sub.4 H.sub.9 C.sub.6 H.sub.4 O).sub.m Al]Hwhereinn = 1 to 3;m = 1 to 3;n + m = 4.The method of the present invention makes it possible to increase the product yield to 80% by weight and to conduct the process under atmospheric pressure.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: September 12, 1978
    Inventors: Jury Ivanovich Michurov, Boris Izrailevich Pantukh, Valerian Mikhailovich Sobolev, Grigory Iosifovich Rutman, Igor Jurievich Logutov, Vladimir Romanovich Dolidze
  • Method for preparing dicarboxylic acids
    Patent number: 3979450
    Abstract: A method for preparing dicarboxylic acids by subjecting cycloolefins to ozonolysis in a medium of lower monocarboxylic acids so as to form an ozonalyzate; treating the ozonalyzate with a solution of hydrogen peroxide; passing the thus obtained mixture through a solid acid catalyst, such as an Amberlite IR-120 cation-exchange resin; and subjecting the thus obtained catalyzed product first to thermal treatment at a temperature of from 50.degree. to 80.degree.C and then to thermal decomposition at a temperature of from 90.degree. to 110.degree.C to form desired dicarboxylic acids such as succinic, suberic or 1,10-decanedicarboxy acids, depending on the starting cycloolefin, in a yield 98 per cent of the theoretical value and of 99.5 per cent purity.
    Type: Grant
    Filed: February 8, 1973
    Date of Patent: September 7, 1976
    Inventors: Jury Leonidovich Moskovich, Jury Nikolaevich Juriev, Viktor Karlovich Tsyskovsky, Ljudmila Vasilievna Berezova, Nokhum Davidovich Gilchenok, Vladimir Avgustovich Yanshevsky, Dmitry Vasilievich Mushenko, Evgeny Semenovich Zelikman, Rufina Alexandrovna Filippova, Vladimir Leonidovich Klimenko, Valerian Mikhailovich Sobolev
  • Method of producing 2,6-dialkyl- and 2,6-diaralkyl-substituted derivatives of p-cresol
    Patent number: 3946086
    Abstract: A method of producing 2,6-dialkyl- and 2,6-diaralkyl-substituted derivatives of p-cresol of the general formula ##SPC1##Wherein R signifies an alkyl group having from 4 to 12 carbon atoms or ##SPC2##Comprising subjecting phenol to alkylation with olefines having from 4 to 12 carbon atoms or with styrene at a temperature of 50.degree.-150.degree.C in the presence of a catalyst, namely, aluminum, taken in an amount of 0.1-5 wt.% of phenol. 2,6-Dialkyl phenol or 2,6-diaralkyl phenol resulting after from the alkylation is treated with a mixture of formaldehyde and dimethylamine or with a product of their interaction having the formula ##EQU1## at a temperature of 20.degree.-100.degree.C with subsequent catalytic hydrogenolysis of N,N-dimethyl(3,5-dialkyl-4-hydroxybenzyl)/amine or N,N-dimethyl(3,5-diaralkyl-4-hydroxybenzyl/amine at a temperature of 80.degree.-200.degree.C., molar ratio of hydrogen to the product being treated of 1-5:1 and space velocity of 0.1-2 hour.sup..sup.-1.
    Type: Grant
    Filed: October 28, 1970
    Date of Patent: March 23, 1976
    Inventors: Felix Borisovich Gershanov, Alexandr Grigorievich Liakumovich, Jury Ivanovich Michurov, Boris Izrailevich Pantukh, Grigory Iosifovich Rutman, Valerian Mikhailovich Sobolev, Alexandr Afroimovich Grinberg, Yakov Abramovich Gurvich, Nina Vasilievna Zakharova, Almira Mudarisovna Nafikova