EP 3017113 A1 20160511 - PRODUCTION OF CPCC WITH DIFFERENT CRYSTAL FORMS
Title (en)
PRODUCTION OF CPCC WITH DIFFERENT CRYSTAL FORMS
Title (de)
HERSTELLUNG VON CPCC MIT VERSCHIEDENEN KRISTALLFORMEN
Title (fr)
PRODUCTION DE CPCC AYANT DIFFÉRENTES FORMES DE CRISTAUX
Publication
Application
Priority
- FI 20135721 A 20130701
- FI 2014050536 W 20140627
Abstract (en)
[origin: WO2015001182A1] The invention relates to a method for precipitating calcium carbonate (PCC) in a non-rhombohedral crystal form, said method comprising: introducing a source of calcium ions and a source of carbonate ions into process water of a mechanical pulp mill; and arranging the carbonate ions to react with the calcium ions to form precipitated calcium carbonate (PCC) in a non-rhombohedral crystal form. This invention further relates to a method for preparing printing paper product comprising PCC made by said novel method. This invention further relates to said paper product.
IPC 8 full level
D21H 17/70 (2006.01); C01F 11/18 (2006.01); D21H 17/67 (2006.01); D21H 19/38 (2006.01); D21H 27/40 (2006.01)
CPC (source: EP)
C01F 11/18 (2013.01); D21H 17/675 (2013.01); D21H 17/70 (2013.01); D21H 19/385 (2013.01); D21H 27/40 (2013.01); C01P 2004/03 (2013.01); C01P 2004/39 (2013.01); C01P 2004/40 (2013.01); C01P 2006/80 (2013.01); Y02P 20/145 (2015.11)
Designated contracting state (EPC)
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 state (EPC)
BA ME
DOCDB simple family (publication)
WO 2015001182 A1 20150108; EP 3017113 A1 20160511; EP 3017113 A4 20170301
DOCDB simple family (application)
FI 2014050536 W 20140627; EP 14820568 A 20140627