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:
Nov. 19, 2013
Filed:
Aug. 25, 2009
Kirill Bramnik, Dossenheim, DE;
Hartmut Hibst, Schriesheim, DE;
Jordan Keith Lampert, Ludwigshafen, DE;
Kirill Bramnik, Dossenheim, DE;
Hartmut Hibst, Schriesheim, DE;
Jordan Keith Lampert, Ludwigshafen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to a process for the preparation of compounds of general Formula (I) LMFeMPMO(I), wherein Fe has the oxidation state +2 and M, M, M, a, b, c, d, e and x are: M: Na, K, Rb and/or Cs, M: Mn, Mg, Al, Ca, Ti, Co, Ni, Cr, V, M: Si, S, F a: 0.8-1.9, b: 0-0.3, c: 0-0.9, 15 d: 0.8-1.9, e: 0-0.5, x: 1.0-8, depending on the amount and oxidation state of Li, M, M, P, M, wherein compounds of general Formula (I) are neutrally charged, comprising the following steps (A) providing a mixture comprising at least one lithium-comprising compound, at least one iron-comprising compound, in which iron has the oxidation state +3, and at least one M-comprising compound, if present, and/or at least one M-comprising compound, if present, and/or least one M-comprising compound, if present, and at least one reducing agent which is oxidized to at least one compound comprising at least one phosphorous atom in oxidation state +5, and (B) heating the mixture obtained in step (A) at a temperature of 100 to 500° C. and at an autogeneous pressure to reduce Fe to oxidation state +2 and to obtain a compound of general Formula (I).