(19)
(11) EP 2 144 850 A2

(12)

(88) Date of publication A3:
31.12.2008

(43) Date of publication:
20.01.2010 Bulletin 2010/03

(21) Application number: 07857933.1

(22) Date of filing: 20.12.2007
(51) International Patent Classification (IPC): 
C01B 33/40(2006.01)
D21H 21/02(2006.01)
(86) International application number:
PCT/EP2007/064312
(87) International publication number:
WO 2008/077877 (03.07.2008 Gazette 2008/27)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 22.12.2006 DE 102006061046

(71) Applicant: Omya Development AG
4665 Oftringen (CH)

(72) Inventors:
  • BURI, Matthias
    4852 Rothrist (CH)
  • KARTH, Beat
    3363 Oberoenz (CH)
  • GANTENBEIN, Daniel
    4145 Gempen (CH)
  • GANE, A.C. Patrick
    4852 Rothrist (CH)

(74) Representative: Maiwald Patentanwalts GmbH 
Elisenhof Elisenstrasse 3
80335 München
80335 München (DE)

   


(54) METHOD FOR PROCESSING CRUDE BENTONITE