EP 0885326 A1 19981223 - SYSTEM OF CHEMICALS AND METHOD FOR DEINKING OF WASTE PAPER
Title (en)
SYSTEM OF CHEMICALS AND METHOD FOR DEINKING OF WASTE PAPER
Title (de)
CHEMIKALIEN UND VERFAHREN ZUM DEINKEN VON ALTPAPIER
Title (fr)
PRODUITS CHIMIQUES ET PROCEDE DE DESENCRAGE DU PAPIER DE RECUPERATION
Publication
Application
Priority
- SE 9700340 W 19970227
- SE 9600730 A 19960227
Abstract (en)
[origin: WO9732076A1] Chemical system that makes it possible in a cost effective and environmentally friendly way to deink waste paper at a lower pH than required in present methods, but with retained efficiency and quality. This has been obtained by a chemical system comprising the following components: a) a surface-active ester to release the printing-ink from the pulp fibers, b) a polyester based collector for aggregation and flotation of released printing-ink particles. The system may also contain an inhibitor for hydrogen peroxide decomposing enzymes, such as peroxidase and catalase.
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 9732076A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9732076 A1 19970904; AU 2110297 A 19970916; EP 0885326 A1 19981223; JP 2000505510 A 20000509; SE 9600730 D0 19960227
DOCDB simple family (application)
SE 9700340 W 19970227; AU 2110297 A 19970227; EP 97906401 A 19970227; JP 53087797 A 19970227; SE 9600730 A 19960227