EP 2270281 A1 20110105 - Process for dyeing pulp
Title (en)
Process for dyeing pulp
Title (de)
Verfahren zum Färben von Zellstoff
Title (fr)
Procédé de pulpe de teinture
Publication
Application
Priority
EP 09163790 A 20090625
Abstract (en)
The invention relates to a process for dyeing pulp comprising bleached pulp comprising adding a cationic dye to the pulp, and then adding a fluorescent whitening agent, followed by forming the paper sheet. Further, the invention relates to a paper obtained by this process.
IPC 8 full level
D21H 21/28 (2006.01); D21H 21/30 (2006.01)
CPC (source: EP)
D21H 21/28 (2013.01); D21H 21/30 (2013.01)
Citation (applicant)
- US 4374643 A 19830222 - SUZUKI KAZUAKI [JP], et al
- P. RYS; H. ZOLLINGER: "Fundamentals of the Chemistry and Application of Dyes", 1972, WILEY INTERSCIENCE
- "Industrial Dyes", 2003, WILEY-VCH
- "Industrial Dyes", 2003, WILEY-VCH, pages: 460
- M. J. KOCUREK: "Joint textbook Committee of the Paper Industry", vol. 1, 1983, TAPPI CPPA, article "Pulp and Paper Manufacture"
- J. S. GRATZL: "Chemische Grundlagen der Zellstoffbleiche mit Sau- erstofj; Wasserstoffperoxid und Ozon", DAS PAPIER, vol. 46, no. 10A, 1992, pages VL - V8
- "Industrial Dyes", 2003, WILEY-VCH, pages: 590 - 610
Citation (search report)
- [A] US 3742012 A 19730626 - BAUMAN D
- [A] US 4540523 A 19850910 - BEECKEN HERMANN [DE]
- [A] WO 2007104128 A1 20070920 - FP INNOVATIONS [CA], et al
- [A] EP 0899373 A1 19990303 - CIBA GEIGY AG [CH]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 09163790 A 20090625; EP 2010059070 W 20100625