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:
Aug. 17, 2010
Filed:
Dec. 15, 2004
Lars Wittenbecher, Mannheim, DE;
Heinrich Lang, Chemnitz, DE;
Yingzhong Shen, Nanjing, CN;
BASF SE, Ludwigshafen, DE;
Abstract
Copper (I) formate complexes of general formula LCu(HCOO).x COOH are decomposed in order to separate metallic copper, wherein x is a number from 0 to 10, n amounts to, 2, 3 or 4 and the n ligands L represent, independent of one another, one of the following ligands: a phosphane of formula RRRP; a phosphite of formula (RO)(RO)(RO)P; an isocyanide of formula R—NC; an alkene of general formula RRC═CRR; or an alkyne of general formula RC═CR; wherein R, R, Rand Rrepresent, independent of one another, hydrogen, a linear or branched, optionally partly or fully fluorinated alkyl, aminoalkyl, alkyoxialkyl, hydroxialkyl, phosphinoalkyl or aryl radical having up to 20 carbon atoms, with the exception of triphenylphosphino-copper (I) formate and 1,1,1-tris(diphenylphosphinomethyl)ethane-copper (I) formate.