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:
Jun. 20, 1995
Filed:
May. 03, 1994
Shien C Chen, Taipei, TW;
Cheng C Chu, Kaohsiung, TW;
Fu S Lin, Kaohsiung, TW;
June Y Chou, Kaohsiung, TW;
Darien Chemical Corporation, Taipei, TW;
Abstract
1,4-butanediol is prepared from allyl alcohol containing allyl acetate and water. The allyl alcohol is subjected to a hydroformylation reaction in the presence of an organic solvent, a rhodium complex, and a phosphorous compound under an atmosphere of carbon monoxide and hydrogen, to produce a hydroformylation product, which is extracted with an alkaline aqueous solution in the presence of carbon monoxide and/or hydrogen. After the extraction, an extracted raffinate solution containing the rhodium complex in the organic solvent is recycled through the same hydroformylation process, while the extracted aqueous solution containing the hydroformylation product is subjected to a hydrogenation reaction in the presence of hydrogen, with a hydrogenation catalyst added, to produce 1,4-butanediol.