CONTINUOUS METHOD FOR THE PRODUCTION AND PURIFICATION OF (METH)ACRYLIC ACID

Details for Australian Patent Application No. 2002237266 (hide)

Owner DEGUSSA AG

Inventors NORDHOFF, Stefan; KOBUS, Axel; GROSS, Stefan; LAUSCH, Hans-Rolf

Pub. Number AU-A-2002237266

PCT Pub. Number WO2002/055469

Priority 101 01 160.1 12.01.01 DE; 101 49 353.3 06.10.01 DE

Filing date 14 January 2002

Wipo publication date 24 July 2002

International Classifications

C07C 051/43 Preparation of carboxylic acids or their salts, halides, or anhydrides

B01D 003/00 Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping

Event Publications

6 February 2003 Application Open to Public Inspection

  Published as AU-A-2002237266

5 February 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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