EP 0239583 B2 19940112 - METHOD OF PRETREATING PULP WITH STABILIZERS AND PEROXIDE PRIOR TO MECHANICAL REFINING.
Title (en)
METHOD OF PRETREATING PULP WITH STABILIZERS AND PEROXIDE PRIOR TO MECHANICAL REFINING.
Title (de)
VORBEHANDLUNGSVERFAHREN VON PULPE MIT STABILISIERUNGSMITTELN UND PEROXID VOR DER MECHANISCHEN RAFFINIERUNG.
Title (fr)
PROCEDE DE PRE-TRAITEMENT D'UNE PULPE AVEC DES STABILISATEURS ET DU PEROXYDE AVANT LE RAFFINAGE MECANIQUE.
Publication
Application
Priority
US 77845785 A 19850920
Abstract (en)
[origin: WO8701746A1] Production of novel pulp, primarily wood pulp, from chips using pre-treatment with stabilizers and alkaline peroxide prior to mechanical fiberization (refining) to increase the brightness of the resulting fibers and the papermaking strength achievable with the fibers. The novel aspect of the pre-treatment prior to refining is that it results in the ''in situ'' formation within the chips of a stabilizing flock or sol.
IPC 1-7
IPC 8 full level
CPC (source: EP)
D21B 1/021 (2013.01); D21B 1/16 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT SE
DOCDB simple family (publication)
WO 8701746 A1 19870326; AR 243622 A1 19930831; AU 3984493 A 19930819; AU 605745 B2 19910124; AU 6225386 A 19870407; AU 663781 B2 19951019; AU 6658290 A 19910131; BR 8606875 A 19871103; CA 1274657 A 19901002; DE 3676490 D1 19910207; EP 0239583 A1 19871007; EP 0239583 A4 19880322; EP 0239583 B1 19910102; EP 0239583 B2 19940112; ES 2002755 A6 19881001; MX 174399 B 19940513; PT 83406 A 19861001; PT 83406 B 19890512
DOCDB simple family (application)
US 8601659 W 19860813; AR 30530786 A 19860919; AU 3984493 A 19930526; AU 6225386 A 19860813; AU 6658290 A 19901114; BR 8606875 A 19860813; CA 518592 A 19860918; DE 3676490 T 19860813; EP 86905113 A 19860813; ES 8602010 A 19860919; MX 377486 A 19860919; PT 8340686 A 19860919