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.:
Date of Patent:
Oct. 24, 1978
Filed:
Aug. 05, 1977
Jury Ivanovich Michurov, Bashkirskaya ASSR, Sterlitamak, SU;
Vladimir Avgustovich Yanshevsky, Novokuibyshevsk, SU;
Rufina Alexandrovna Filippova, Novokuibyshevsk, SU;
Yakov Abramovich Gurvich, Moscow, SU;
Igor Jurievich Logutov, Bashkirskaya ASSR, Sterlitamak, SU;
Sofya Alexandrovna Egoricheva, Bashkirskaya ASSR, Sterlitamak, SU;
Izrail Markovich Belgorodsky, Tolyatti, SU;
Sergei Gerasimovich Vyborov, Tolyatti, SU;
Other;
Abstract
A method for preparing 2,6-ditert.butylphenol which comprises alkylation of phenol in the presence of monotert.-butylphenol and a catalyst, viz. aluminium dissolved in phenol with gradually lowering the process temperature from 120.degree. to 50.degree. C and reducing the concentration of isobutylene in the mixture of isomeric butenes from 80 to 1.5 mol.%, followed by isolation of the desired product. The method according to the present invention makes it possible to achieve a high degree of conversion of isobutylene without impairing quality of the desired product. The amount of by-products formed in the process is 2-3 times as less as in the prior art methods.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile