EP 1456468 B1 20120208 - AQUEOUS SILICA-CONTAINING COMPOSITION AND PROCESS FOR PRODUCTION OF PAPER
Title (en)
AQUEOUS SILICA-CONTAINING COMPOSITION AND PROCESS FOR PRODUCTION OF PAPER
Title (de)
WÄSSRIGE SILICIUM ENTHALTENDE ZUSAMMENSTZUNG UND VERFAHREN ZUR HERSTELLUNG VON PAPIER
Title (fr)
COMPOSITION AQUEUSE CONTENANT DE LA SILICE ET PROCEDE DE PRODUCTION DE PAPIER
Publication
Application
Priority
- EP 02793740 A 20021220
- EP 01850224 A 20011221
- SE 0202444 W 20021220
Abstract (en)
[origin: WO03056099A1] The present invention relates to an aqueous silica-containing composition comprising an anionic organic polymer having at least one aromatic group and anionic aggregated or microgel formed silica-based particles. The aqueous silica-containing composition contains the anionic organic polymer having at least one aromatic group and the anionic silica-based particles in an amount of at least 0.01 % by weight of the total weight of the aqueous silica-containing composition. The aqueous silica-containing composition contains substantially no cellulose-reactive sizing agent and the anionic organic polymer having at least one aromatic group is not an anionic naphthalene sulphonate formaldehyde condensate.The invention further relates to methods for the preparation of the aqueous silica-containing composition and the use of the aqueous silica-composition as a drainage and retention aid in a process for the production of paper. The invention also relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optionally filler, in which the aqueous silica-containing composition and at least one charged organic polymer are added to the cellulosic suspension.
IPC 8 full level
C09J 1/00 (2006.01); D21H 17/68 (2006.01); D21H 21/10 (2006.01)
CPC (source: EP KR)
D21H 17/68 (2013.01 - EP KR); D21H 21/10 (2013.01 - KR); D21H 21/10 (2013.01 - EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03056099 A1 20030710; AT E544906 T1 20120215; AU 2002359218 A1 20030715; AU 2002359218 B2 20051208; BR 0215227 A 20041116; CA 2470803 A1 20030710; CA 2470803 C 20090526; CN 1606647 A 20050413; EP 1456468 A1 20040915; EP 1456468 B1 20120208; ES 2381028 T3 20120522; JP 2005513300 A 20050512; KR 20040068321 A 20040730; MX PA04005533 A 20040913; NO 20043139 L 20040921; NZ 533263 A 20051223; PL 215499 B1 20131231; PL 369967 A1 20050502; PT 1456468 E 20120508; RU 2004122419 A 20050327; RU 2274692 C2 20060420; ZA 200404079 B 20050525
DOCDB simple family (application)
SE 0202444 W 20021220; AT 02793740 T 20021220; AU 2002359218 A 20021220; BR 0215227 A 20021220; CA 2470803 A 20021220; CN 02825644 A 20021220; EP 02793740 A 20021220; ES 02793740 T 20021220; JP 2003556605 A 20021220; KR 20047009816 A 20021220; MX PA04005533 A 20021220; NO 20043139 A 20040720; NZ 53326302 A 20021220; PL 36996702 A 20021220; PT 02793740 T 20021220; RU 2004122419 A 20021220; ZA 200404079 A 20040525