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:
Jul. 07, 1981
Filed:
Jan. 02, 1980
Toshihiro Saito, Shin-nanyo, JP;
Yukihiro Tsutsumi, Shin-nanyo, JP;
Shoji Arai, Shin-nanyo, JP;
Hideaki Matsunaga, Shin-nanyo, JP;
Toyo Soda Manufacturing Co., Ltd., Shin-nanyo, JP;
Abstract
A trans-[hydridocarbonyl tris(triorganic phosphine) rhodium (I)]is produced by reducing a trans-[chlorocarbonyl bis(triorganic phosphine) rhodium (I)]with a tetrahydroborate in the presence of a triorganic phosphine in a solvent by heating, an improvement characterized in that the reduction is carried out in the presence of carbon monoxide or a mixture of more than 50 vol. % of carbon monoxide and an inert gas and the reaction mixture if cooled to O.degree. to 30.degree. C. in an atmosphere of carbon monoxide or a mixture of more than 50 vol. % of carbon monoxide and an inert gas and the crystal is separated. The trans-[hydridocarbonyl tris(triorganic phosphine) rhodium (I)]having high purity is obtained at high yield.