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:
Jan. 30, 2001
Filed:
Mar. 24, 1999
Applicant:
Inventors:
John Laurence Carey, East Yorkshire, GB;
Michael David Jones, East Yorkshire, GB;
Gillian Mary Lancaster, Brough, GB;
Assignee:
BP Chemicals Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 5/500 ; C22B 1/100 ;
U.S. Cl.
CPC ...
C01G 5/500 ; C22B 1/100 ;
Abstract
A process for recovery rhodium from a solution of rhodium and tar produced in the carbonylation of methanol, methyl acetate dimethyl ester and/or reactive derivatives thereof involves extraction with a combination of water, methyl iodide and methyl acetate in which methyl acetate is at least 20% of the methyl iodide plus methyl acetate.