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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.:

US 3979450 B1

PDFFull Text
Date of Patent:
Sep. 07, 1976

Filed:

Feb. 08, 1973

Method for preparing dicarboxylic acids

Applicant:
Inventors:

Jury Leonidovich Moskovich, Leningrad, SU;

Jury Nikolaevich Juriev, Leningrad, SU;

Viktor Karlovich Tsyskovsky, Leningrad, SU;

Ljudmila Vasilievna Berezova, Leningrad, SU;

Nokhum Davidovich Gilchenok, Leningrad, SU;

Vladimir Avgustovich Yanshevsky, Novokuibyshevsk, SU;

Dmitry Vasilievich Mushenko, Leningrad, SU;

Evgeny Semenovich Zelikman, Leningrad, SU;

Rufina Alexandrovna Filippova, Novokuibyshevsk, SU;

Vladimir Leonidovich Klimenko, Leningrad, SU;

Valerian Mikhailovich Sobolev, Moscow, SU;

Assignee:

Other;

Attorney:

Haseltine, Lake & Waters

Primary Examiner:

Vivian Garner

Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2604 / ; 260491 ; 2604 / ;
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.

Find Patent Forward Citations

Moskovich, Jury. (1976). Method for preparing dicarboxylic acids (U.S. Patent No. 3979450). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3979450

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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