Method for preparing oxydiphthalic anhydrides using guanidinium salt as catalyst

Details for Australian Patent Application No. 2004215452 (hide)

Owner General Electric Company

Inventors Brunelle, Daniel Joseph; Ye, Qing

Agent Phillips Ormonde Fitzpatrick

Pub. Number AU-A-2004215452

PCT Pub. Number WO2004/076399

Priority 10/373,430 24.02.03 US

Filing date 17 February 2004

Wipo publication date 10 September 2004

International Classifications

C07C 051/567 Preparation of carboxylic acids or their salts, halides, or anhydrides

C07C 065/24 Compounds having carboxyl groups bound to carbon atoms of six-membered aromatic rings and containing any of the groups OH, O-metal, CHO, keto, ether, groups, groups, or groups

Event Publications

29 September 2005 PCT application entered the National Phase

  PCT publication WO2004/076399 Priority application(s): WO2004/076399

19 June 2008 Assignment before Grant

  General Electric Company The application has been assigned to SABIC Innovative Plastics IP B.V.

10 September 2009 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(d). Examination has been requested or an examination report has issued for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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