EP 0445160 A1 19910911 - DE-INKING OF OLD PAPERS.
Title (en)
DE-INKING OF OLD PAPERS.
Title (de)
DEINKEN VON ALTPAPIEREN.
Title (fr)
DESENCRAGE DE VIEUX PAPIERS.
Publication
Application
Priority
DE 3839479 A 19881123
Abstract (en)
[origin: EP0373375A2] Process for de-inking old papers in the presence of at least partly water-soluble polymers and/or copolymers with mean molecular weights between 2000 and 500 000 obtained by polymerization or by copolymerization of monomers containing amino groups with unsaturated acid derivatives.
Abstract (fr)
Procédé de désencrage de vieux papiers en présence de polymères et/ou copolymères au moins partiellement solubles dans l'eau avec des poids moléculaires moyens compris entre 2.000 et 500.000, obtenus par polymérisation ou par copolymérisation de monomères contenant des groupes amino avec des dérivés d'acides insaturés.
IPC 1-7
IPC 8 full level
D21C 5/02 (2006.01)
CPC (source: EP)
D21C 5/027 (2013.01); Y02W 30/64 (2015.05)
Citation (search report)
See references of WO 9005805A2
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0373375 A2 19900620; EP 0373375 A3 19900801; EP 0373375 B1 19920909; AT E80424 T1 19920915; CA 2003406 A1 19900523; DE 3839479 A1 19900607; DE 58902253 D1 19921015; EP 0445160 A1 19910911; ES 2045352 T3 19940116; FI 912248 A0 19910509; FI 95605 B 19951115; FI 95605 C 19960226; JP H04502038 A 19920409; RU 1833445 C 19930807; TR 24045 A 19910207; WO 9005805 A2 19900531; WO 9005805 A3 19900712; YU 220089 A 19901231
DOCDB simple family (application)
EP 89121088 A 19891114; AT 89121088 T 19891114; CA 2003406 A 19891120; DE 3839479 A 19881123; DE 58902253 T 19891114; EP 8901363 W 19891114; EP 89912961 A 19891114; ES 89121088 T 19891114; FI 912248 A 19910509; JP 50016490 A 19891114; SU 4895412 A 19910522; TR 74189 A 19891103; YU 220089 A 19891120