EP 2758477 A1 20140730 - METHOD FOR THE SURFACE MODIFICATION OF TITANIUM DIOXIDE PIGMENT
Title (en)
METHOD FOR THE SURFACE MODIFICATION OF TITANIUM DIOXIDE PIGMENT
Title (de)
VERFAHREN ZUR OBERFLÄCHENMODIFIZIERUNG VON TITANDIOXIDPIGMENT
Title (fr)
PROCÉDÉ DE MODIFICATION DE SURFACE DE PIGMENTS DE DIOXYDE DE TITANE
Publication
Application
Priority
- DE 102011113896 A 20110922
- EP 2012003903 W 20120919
Abstract (en)
[origin: US2013074734A1] The invention relates to a method for the surface modification of titanium dioxide pigment and to its use, particularly in coatings, for interior and exterior walls (emulsion paints) and in water-borne paint systems. The method for surface modification is based on a titanium dioxide pigment that has been provided with a fluffily structured surface coating and where the fluffily structure of the surface coating is at least partially compacted, preferably by exposing the pigment particles to high shear and impact forces. The pigment particles are preferably coated with silicon oxide and/or aluminium oxide. The method according to the invention preferably reduces the specific surface area (BET) by roughly 30%. The pigment according to the invention can be used to optimise the rheological properties and the open time of the paint.
IPC 8 full level
C09C 1/36 (2006.01); C09D 7/62 (2018.01); C09D 7/80 (2018.01)
CPC (source: EP US)
C09C 1/3692 (2013.01 - EP US); C09D 7/62 (2017.12 - EP US); C01P 2006/12 (2013.01 - EP US); C01P 2006/19 (2013.01 - EP US); C01P 2006/22 (2013.01 - EP US); C01P 2006/62 (2013.01 - EP US); C01P 2006/64 (2013.01 - EP US)
Citation (search report)
See references of WO 2013041217A1
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
DOCDB simple family (publication)
US 2013074734 A1 20130328; DE 102011113896 A1 20130328; EP 2758477 A1 20140730; WO 2013041217 A1 20130328; WO 2013041217 A9 20150319
DOCDB simple family (application)
US 201213623537 A 20120920; DE 102011113896 A 20110922; EP 12780410 A 20120919; EP 2012003903 W 20120919