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:
Apr. 09, 1985
Filed:
Feb. 25, 1983
Applicant:
Inventors:
Assignee:
Kuraray Company, Ltd., Kurashiki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568454 ;
Abstract
A process for producing 1,9-nonanedial which comprises hydroformylating 7-octen-1-al with a mixture of hydrogen and carbon monoxide in an aqueous sulfolane or 1,4-butanediol solution in the presence of a rhodium complex and the sodium, potassium or lithium salt of m-(diphenylphosphino)benzenesulfonic acid, extracting 1,9-nonanedial from the reaction mixture with a primary alcohol or a mixture of a primary alcohol and a saturated aliphatic hydrocarbon, and recycling the extraction residue containing the catalyst components to the 7-octen-1-al hydroformylation step.