(19)
(11) EP 2 480 496 A1

(12)

(43) Date of publication:
01.08.2012 Bulletin 2012/31

(21) Application number: 10760870.5

(22) Date of filing: 24.09.2010
(51) International Patent Classification (IPC): 
C01B 25/22(2006.01)
(86) International application number:
PCT/US2010/050086
(87) International publication number:
WO 2011/038167 (31.03.2011 Gazette 2011/13)
(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 SE SI SK SM TR

(30) Priority: 25.09.2009 US 245713 P

(71) Applicant: Cytec Technology Corporation
Wilmington, DE 19801 (US)

(72) Inventors:
  • RAVISHANKAR, Sathanjheri
    Shelton CT 06484 (US)
  • WANG, Bing
    Brookfield CT 06804 (US)

(74) Representative: Destryker, Elise Martine 
CYTEC Surface Specialties, S.A. Patent Dept. Anderlechtstraat 33
1620 Drogenbos
1620 Drogenbos (BE)

   


(54) PREVENTING OR REDUCING SCALE IN WET-PROCESS PHOSPHORIC ACID PRODUCTION