EP 0394368 A1 19901031 - A PROCESS FOR THE PRODUCTION OF PAPER.
Title (en)
A PROCESS FOR THE PRODUCTION OF PAPER.
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PAPIER.
Title (fr)
PROCEDE DE PRODUCTION DE PAPIER.
Publication
Application
Priority
SE 8800816 A 19880308
Abstract (en)
[origin: WO8908741A1] A process for the production of paper by forming and dewatering a suspension of cellulose containing fibers and optional fillers on a wire in the presence of a cationic silica based sol and a cationic polymeric retention agent. The cationic polymeric retention agent is cationic guar gum or a cationic synthetic polymer such as cationic polyacrylamide. The combination of cationic silica sol and cationic polymeric retention agent gives improved retention of fines and fillers and eases drainage.
Abstract (fr)
Un procédé de production de papier consiste à former et à égoutter une suspension de cellulose contenant des fibres ainsi que des charges optionnelles sur un fil, en présence d'un sol à base de silice cationique et d'un agent de rétention polymère cationique. Ledit agent de rétention polymère cationique est une gomme de guar ou un polymère synthétique cationique tel qu'un polyacrylamide cationique. La combinaison de sol de silice cationique et de l'agent de rétention polymère cationique améliore la rétention de poussières et de charges, et facilite le drainage.
IPC 1-7
IPC 8 full level
D21H 17/00 (2006.01); D21H 17/24 (2006.01); D21H 17/32 (2006.01); D21H 17/37 (2006.01); D21H 17/55 (2006.01); D21H 17/63 (2006.01); D21H 17/68 (2006.01); D21H 21/10 (2006.01); D21H 23/00 (2006.01)
IPC 8 main group level
D21H (2006.01)
CPC (source: EP KR)
D21H 17/10 (2013.01 - KR); D21H 17/63 (2013.01 - KR); D21H 21/10 (2013.01 - EP); D21H 17/32 (2013.01 - EP); D21H 17/37 (2013.01 - EP); D21H 17/68 (2013.01 - EP)
Citation (search report)
See references of WO 8908741A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
WO 8908741 A1 19890921; AU 3294989 A 19891005; CA 1324705 C 19931130; CN 1010599 B 19901128; CN 1035859 A 19890927; DK 215590 A 19900907; DK 215590 D0 19900907; EP 0394368 A1 19901031; EP 0394368 B1 19930512; ES 2010430 A6 19891101; FI 904384 A0 19900905; FI 93882 B 19950228; FI 93882 C 19950612; JP 2607161 B2 19970507; JP H03503299 A 19910725; KR 900700690 A 19900816; KR 920011032 B1 19921226; NZ 228206 A 19900426; SE 462721 B 19900820; SE 8800816 D0 19880308; SE 8800816 L 19890909
DOCDB simple family (application)
SE 8900062 W 19890214; AU 3294989 A 19890214; CA 593012 A 19890307; CN 89101260 A 19890307; DK 215590 A 19900907; EP 89903832 A 19890214; ES 8900817 A 19890307; FI 904384 A 19900905; JP 50349889 A 19890214; KR 890701973 A 19891225; NZ 22820689 A 19890303; SE 8800816 A 19880308