Patents Assigned to Clariant Speciality Fine Chemicals (France)
  • Process for deacetalisation of ? aminoacetals
    Patent number: 8609882
    Abstract: The invention relates to a process for the preparation of N-protected ?-aminoaldehydes by deacetalization of the acetal functional group of corresponding N-protected ?-aminoacetals using formic acid.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: December 17, 2013
    Assignee: Clariant Speciality Fine Chemicals (France)
    Inventors: Muriel Albalat, Géraldine Primazot, Didier Wilhelm, Jean-Claude Vallejos
  • Process of separation of glyoxylic acid from an aqueous reaction medium containing glyoxylic acid and hydrochloric acid
    Patent number: 8481783
    Abstract: The invention relates to a process for separating glyoxylic acid starting from an aqueous reaction medium containing glyoxylic acid and hydrochloric acid, comprising a step of countercurrent steam stripping of the reaction medium in order to obtain, on the one hand, a gas phase containing the volatile hydrochloric acid and, on the other hand, a liquid phase containing the purified glyoxylic acid.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: July 9, 2013
    Assignee: Clariant Speciality Fine Chemicals (France)
    Inventor: Olivier Simon
  • Process for the synthesis of polyhydroxystilbene compounds
    Patent number: 8399714
    Abstract: The invention relates to a process for the synthesis of stilbene derivatives of formula (I)-(E) or (I)-(Z) in which R represents hydrogen or an OH group, by deprotection in the presence of an aluminum halide and of a tertiary amine of a compound of formula (II)-(E) or (II)-(Z) in which A represents hydrogen or an OR?1 group, and R1, R2, R3 and R?1 independently represent an alkyl or aralkyl group.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: March 19, 2013
    Assignee: Clariant Speciality Fine Chemicals (France)
    Inventors: Jean-Claude Vallejos, Alain Schouteeten, Didier Wilhelm
  • Method For Producing Bridged Manganese Complexes Of Triazacyclononane
    Publication number: 20120202990
    Abstract: The invention relates to a method for producing manganese complex compounds of the general formula (1), wherein M, X, L, z, Y and q are defined as in claim 1.
    Type: Application
    Filed: September 10, 2010
    Publication date: August 9, 2012
    Applicants: CLARIANT SPECIALITY FINE CHEMICALS (FRANCE), CLARIANT FINANCE (BVI) LIMITED
    Inventors: Gerd Reinhardt, Michael Best, Christian Sidot