Patents Assigned to Wadenswil/AU
  • Process for the preparation of 2,6-dihalo-para-trifluoromethylaniline
    Patent number: 7553993
    Abstract: Process for the preparation of a compound of general formula (I): in which X represents a halogen atom, by reaction of para-trifluoromethylaniline of formula (II): with a dihalogen X2, the two compounds being introduced simultaneously into a polar aprotic solvent in a dihalogen/compound (II) molar ratio ranging from 1.9 to 2.5 and at a temperature ranging from 100 to 300° C.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: June 30, 2009
    Assignees: BASF Agro B.V., Wadenswil/AU
    Inventors: Bernard Buathier, Pierre Le Roy