EP 1456469 B1 20140319 - 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 ZUSAMMENSETZUNG UND VERFAHREN ZUR HERSTELLUNG VON PAPIER
Title (fr)
COMPOSITION A BASE DE SILICE AQUEUSE ET PROCEDE DE FABRICATION DE PAPIER
Publication
Application
Priority
- EP 02793739 A 20021220
- EP 01850225 A 20011221
- SE 0202443 W 20021220
Abstract (en)
[origin: WO03056100A1] The present invention refers to a process for the production of paper from a suspension containing cellulosic fibres, and optionally fillers, comprising adding to the suspension at least one cationic organic polymer and an aqueous silica-containing composition comprising an anionic naphthalene sulphonate formaldehyde condensate and anionic silica-based particles, the composition having a weight ratio of naphthalene sulphonate formaldehyde condensate to silica-based particles within the range of from 0.2:1 to 99:1, and containing naphthalene sulphonate formaldehyde condensate and silica-based particles in an amount of at least 0.01 % by weight, based on the total weight of the aqueous silica-containing composition, and with the proviso that the composition contains substantially no cellulose-reactive sizing agent. The invention also encompasses an aqueous silica-containing composition and a method for preparation of an aqueous silica-containing composition.
IPC 8 full level
D21H 17/68 (2006.01); D21H 21/10 (2006.01); D21H 17/00 (2006.01); D21H 17/29 (2006.01); D21H 17/44 (2006.01); D21H 17/47 (2006.01); D21H 17/37 (2006.01); D21H 17/45 (2006.01); D21H 17/48 (2006.01)
CPC (source: EP KR)
D21H 3/00 (2013.01 - KR); D21H 13/38 (2013.01 - KR); D21H 17/68 (2013.01 - KR); D21H 17/74 (2013.01 - EP); D21H 17/29 (2013.01 - EP); D21H 17/375 (2013.01 - EP); D21H 17/455 (2013.01 - EP); D21H 17/48 (2013.01 - EP); D21H 17/68 (2013.01 - EP); 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 03056100 A1 20030710; AU 2002359217 A1 20030715; AU 2002359217 B2 20051124; BR 0215229 A 20041116; BR 0215229 B1 20140520; CA 2470789 A1 20030710; CA 2470789 C 20091013; CN 1633533 A 20050629; EP 1456469 A1 20040915; EP 1456469 B1 20140319; ES 2464573 T3 20140603; JP 2005513301 A 20050512; KR 20040068318 A 20040730; MX PA04005979 A 20050527; NO 20043111 L 20040921; NO 337087 B1 20160118; NZ 533262 A 20051223; PL 209755 B1 20111031; PL 370194 A1 20050516; PT 1456469 E 20140605; RU 2004122418 A 20050510; RU 2264492 C2 20051120; ZA 200404078 B 20050727
DOCDB simple family (application)
SE 0202443 W 20021220; AU 2002359217 A 20021220; BR 0215229 A 20021220; CA 2470789 A 20021220; CN 02825886 A 20021220; EP 02793739 A 20021220; ES 02793739 T 20021220; JP 2003556606 A 20021220; KR 20047009799 A 20021220; MX PA04005979 A 20021220; NO 20043111 A 20040720; NZ 53326202 A 20021220; PL 37019402 A 20021220; PT 02793739 T 20021220; RU 2004122418 A 20021220; ZA 200404078 A 20040525