(19)
(11) EP 3 356 596 A1

(12)

(43) Date of publication:
08.08.2018 Bulletin 2018/32

(21) Application number: 16787737.2

(22) Date of filing: 29.09.2016
(51) International Patent Classification (IPC): 
D21C 9/08(2006.01)
D21C 9/16(2006.01)
D21H 21/32(2006.01)
 D21C 9/10(2006.01)
D21H 21/02(2006.01)
(86) International application number:
PCT/EP2016/073350
(87) International publication number:
WO 2017/055504 (06.04.2017 Gazette 2017/14)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30) Priority: 30.09.2015 EP 15306543
18.07.2016 EP 16305924

(71) Applicant: Imerys Minerals Limited
Par, Cornwall PL24 2SQ (GB)

(72) Inventors:
  • LIKITALO, Mikko
    1410 Waterloo (BE)
  • BIZA, Peter
    31170 Tournefeuille (FR)
  • WEBER, Bernhard
    81241 München (DE)

(74) Representative: Williamson, Catherine Alice 
Haseltine Lake LLP Redcliff Quay 120 Redcliff Street
Bristol BS1 6HU
Bristol BS1 6HU (GB)

   


(54) METHODS FOR BLEACHING AQUEOUS PULPS AND COMPOSITIONS FOR USE IN THESE METHODS