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:
Sep. 09, 1980
Filed:
Dec. 01, 1978
Jerry D Unruh, Corpus Christi, TX (US);
Celanese Corporation, New York, NY (US);
Abstract
An improved process for hydroformylating an ethylenically-unsaturated compound to form an aldehyde derivative thereof in the presence of rhodium hydridocarbonyl in complex combination with an organic ligand, characterized by employing as said organic ligand a compound having two phosphino moieties, one being of the formula: ##STR1## and the other being of the formula: ##STR2## wherein R.sub.1, R.sub.2, R.sub.1 ', and R.sub.2 ' are organic radicals at least one of which contains an electronegative substituent moiety. The presence of the electronegative substituent in the ligand leads to an increased ratio of linear aldehyde to branched-chain aldehyde in the hydroformylation reaction product.