EP 0680530 A1 19951108 - TREATMENT OF CELLULOSIC MATERIAL AND COMPOSITIONS FOR USE IN THIS.
Title (en)
TREATMENT OF CELLULOSIC MATERIAL AND COMPOSITIONS FOR USE IN THIS.
Title (de)
Behandlung von Zellulosematerial und dafür verwendbare Zusammensetzungen.
Title (fr)
TRAITEMENT DE MATERIAUX CELLULOSIQUES ET COMPOSITIONS UTILISEES POUR CE TRAITEMENT.
Publication
Application
Priority
- GB 9402350 W 19941026
- GB 9322118 A 19931027
Abstract (en)
[origin: WO9512026A1] Waste paper, especially office waste including laser and/or photocopier paper, is subjected to de-inking by pulping in the presence of a water-soluble anionic polymer at a substantially neutral pH and then by flotation in the presence of a cationic surfactant.
IPC 1-7
IPC 8 full level
D21C 5/02 (2006.01)
CPC (source: EP)
D21C 5/025 (2013.01); Y02W 30/64 (2015.05)
Citation (search report)
See references of WO 9512026A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
WO 9512026 A1 19950504; AU 673782 B2 19961121; AU 7997894 A 19950522; BR 9406216 A 19960109; CA 2152782 A1 19950504; EP 0680530 A1 19951108; FI 953087 A0 19950621; FI 953087 A 19950816; GB 9322118 D0 19931215; JP H08505444 A 19960611; NO 952568 D0 19950626; NO 952568 L 19950822; NZ 274880 A 19961028; PL 309626 A1 19951030; ZA 948463 B 19951027
DOCDB simple family (application)
GB 9402350 W 19941026; AU 7997894 A 19941026; BR 9406216 A 19941026; CA 2152782 A 19941026; EP 94931095 A 19941026; FI 953087 A 19950621; GB 9322118 A 19931027; JP 51247895 A 19941026; NO 952568 A 19950626; NZ 27488094 A 19941026; PL 30962694 A 19941026; ZA 948463 A 19941027