EP 0414496 A1 19910227 - Method and pulp for improving paper fines and filler retention.
Title (en)
Method and pulp for improving paper fines and filler retention.
Title (de)
Verfahren und Zellstoff für die Verbesserung der Retention von Papierpulvern und -füllstoffen.
Title (fr)
Méthode et pâte pour améliorer la rétention des poudres et des agents de remplissage du papier.
Publication
Application
Priority
US 39722489 A 19890823
Abstract (en)
High molecular weight copolymers of 40-60 weight percent acrylamide and 60-40 weight percent diallyldimethylammonium chloride, particularly those copolymers that have an RSV (reduced specific viscosity) exceeding 5 and more particularly exceeding 7.5, give outstanding results as fine and filler retention agents used in the manufacture of paper.
IPC 1-7
IPC 8 full level
D21H 17/45 (2006.01)
CPC (source: EP)
D21H 17/455 (2013.01)
Citation (search report)
- [X] FR 2245671 A1 19750425 - CALGON CORP [US]
- [X] EP 0320512 A1 19890621 - SUMITOMO CHEMICAL CO [JP]
- [XP] EP 0362770 A2 19900411 - HERCULES INC [US]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0414496 A1 19910227; AU 5113090 A 19910228; CA 2005896 A1 19910223; FI 902129 A0 19900427; MX 174066 B 19940419; ZA 902389 B 19910327
DOCDB simple family (application)
EP 90309154 A 19900821; AU 5113090 A 19900307; CA 2005896 A 19891218; FI 902129 A 19900427; MX 2053090 A 19900430; ZA 902389 A 19900328