Use of polyacrylic acids as grinding aids for calcium carbonate

Details for Australian Patent Application No. 2004220376 (hide)

Owner BASF Aktiengesellschaft

Inventors Michl, Kathrin; Schmidt, Kati; Gotsche, Michael; Rieger, Jens

Agent Watermark

Pub. Number AU-A-2004220376

PCT Pub. Number WO2004/080899

Priority 103 11 617.6 14.03.03 DE

Filing date 5 March 2004

Wipo publication date 23 September 2004

International Classifications

C01F 011/18 Compounds of calcium, strontium, or barium

B02C 023/06 Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in groups or not specially adapted to apparatus covered by one only of groups

C08F 020/06 Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof

Event Publications

6 October 2005 PCT application entered the National Phase

  PCT publication WO2004/080899 Priority application(s): WO2004/080899

30 September 2010 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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