(19)
(11) EP 2 061 927 A2

(12)

(43) Date of publication:
27.05.2009 Bulletin 2009/22

(21) Application number: 07762238.9

(22) Date of filing: 17.05.2007
(51) International Patent Classification (IPC): 
D21C 3/02(2006.01)
(86) International application number:
PCT/US2007/069159
(87) International publication number:
WO 2007/137127 (29.11.2007 Gazette 2007/48)
(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

(30) Priority: 19.05.2006 US 747717 P
08.09.2006 US 824995 P

(71) Applicant: The Research Foundation of the State University of New York
Albany, NY 12207 (US)

(72) Inventors:
  • FRANCIS, Raymond
    Syracuse, NY 13210 (US)
  • SHIN, Nam Hee
    Clifton Park, NY 12065 (US)

(74) Representative: Vuillermoz, Bruno 
Cabinet Laurent & Charras "Le Contemporain" 50, Chemin de la Bruyère
69574 Dardilly Cédex
69574 Dardilly Cédex (FR)

   


(54) METHODS FOR CARBONATE PRETREATMENT AND PULPING OF CELLULOSIC MATERIAL