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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 5128490 B1

PDFFull Text
Date of Patent:
Jul. 07, 1992

Filed:

Feb. 20, 1991

Isolation of tetrahydrofuran from mixtures which contain

Applicant:
Inventors:

Stabel Uwe, Edingen-Neckarhausen, DE;

Hans-Juergen Gosch, Bad Durkheim, DE;

Rolf Fischer, Heidelberg, DE;

Wolfgang Harder, Weinheim, DE;

Claus Hechler, Mannheim, DE;

Assignee:

Basf Aktiengesellschaft, Ludwigshafen, DE;

Attorney:

Shurtleff; John H.

Primary Examiner:

C Warren Ivy

Assistant Examiner:

James H Turnipseed

Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549509 ; 549508 ;
Abstract

A process is described for isolating tetrahydrofuran from mixtures containing tetrahydrofuran, 1,4-butanediol, -butyrolactone and succinic acid esters, in which the mixtures are heated to from 150.degree. to 250.degree. C. in the presence of phyllosilicates, the resultant tetrahydrofuran and water of reaction are removed from the reaction mixture by distillation, and the tetrahydrofuran is separated from the distillate.

Find Patent Forward Citations

Stabel Uwe,. (1992). Isolation of tetrahydrofuran from mixtures which contain (U.S. Patent No. 5128490). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5128490

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