B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
9/39, 400/4033,
B01F 17/52 (2006.01) B01F 17/00 (2006.01) B01J 13/00 (2006.01) C09D 17/00 (2006.01) D21H 17/67 (2006.01) D21H 19/44 (2006.01) G01N 33/00 (2006.01)
Patent
CA 2018392
An aqueous suspension of minerals and/or fillers and/or pig- ments having a solid content 60 % by weight, the mineral or the filler or the pigment being dispersed with one or more dispersing agents, is characterized in that the dispersing agent contains one or more amphoteric polyelectrolytes and/or cationic polyelectrolytes and/or amphoteric cationic polyelec- trolytes and/or amphoteric anionic polyelectrolytes and/or partially neutralized anionic polyelectrolytes and/or partial- ly neutralized amphoteric anionic polyelectrolytes, the filler and/or pigment and/or mineral particles carrying a charge neutral or positive to the outside. Furthermore is disclosed a process characterized in that a part of the polyelectrolytes according to the invention is added before the grinding, a part thereof may be added during the grinding and a part thereof may be added after the grin- ding. According to the invention grinding and dispersing is achieved in only one process step.
Buri Matthias
Frey Daniel
Omya Development Ag
Riches Mckenzie & Herbert Llp
LandOfFree
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