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. 19, 1993
Filed:
May. 20, 1991
Stephen N Falling, Kingsport, TN (US);
Gerald W Phillips, Longview, TX (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Disclosed is a process for the production of an equilibrium mixture of 2-hydroxytetrahydrofuran and 4-hydroxybutanal by a two-step process comprising (1) heating 2,5-dihydrofuran in the presence of a catalyst system comprising a phosphine, ruthenium or rhodium to convert the 2,5-dihydrofuran to 2,3-dihydrofuran; and (2) contacting 2,3-dihydrofuran with water in the presence of an acidic catalyst to convert the 2,3-dihydrofuran to a mixture of 2-hydroxytetrahydrofuran and 4-hydroxybutanal. Also disclosed is a process for the continuous production of an aqueous solution of 2-hydroxytetrahydrofuran and 4-hydroxybutanal. The mixture of 2-hydroxytetra-hydrofuran and 4-hydroxybutanal may be catalytically hydrogenated to produce 1,4-butanediol.