EP 0586755 B1 19970521 - A process for controlling the deposition of pitch in paper making
Title (en)
A process for controlling the deposition of pitch in paper making
Title (de)
Verfahren zur Harzkontrolle in der Papierherstellung
Title (fr)
Procédé de contrÔle du dépÔt de poix dans la fabrication du papier
Publication
Application
Priority
EP 92306134 A 19920702
Abstract (en)
[origin: EP0586755A1] There is disclosed a process for controlling the deposition of pitch in a pulping or paper making process, wherein there is incorporated into the composition comprising paper making fibres up to 1.0% by weight, based on the weight of dry fibres in the composition, of a cationic polyelectrolyte which is a poly(diallyl di(hydrogen or lower alkyl) ammonium salt) having a number average molecular weight greater than 500,000.
IPC 1-7
IPC 8 full level
D21C 9/08 (2006.01); D21H 17/45 (2006.01); D21H 21/02 (2006.01)
CPC (source: EP)
D21C 9/086 (2013.01); D21H 17/455 (2013.01); D21H 21/02 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0586755 A1 19940316; EP 0586755 B1 19970521; AT E153402 T1 19970615; DE 69219888 D1 19970626; DE 69219888 T2 19970911; DK 0586755 T3 19971201; ES 2101035 T3 19970701; FI 933007 A0 19930630; FI 933007 A 19940103
DOCDB simple family (application)
EP 92306134 A 19920702; AT 92306134 T 19920702; DE 69219888 T 19920702; DK 92306134 T 19920702; ES 92306134 T 19920702; FI 933007 A 19930630