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A method for increasing the stability of fluorescent whitening agent [Metod för att öka stabiliteten hos fluorescerande vitmedel]
(FSCN - High Yield Pulping Research Profile)
Iggesund Paperboard AB.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics. (FSCN High Yield Pulping Research Profile)
2004 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The present invention relates to a method for increasing the stability of fluorescent whitening agent after its preparation and during its use either on its own or mixed with other chemicals. The method is characterised in that the whitening agent is supplied with an organic acid containing aromatic group and/or can be esterified internally forming lactone, or the salt of the acid (additive A) and reducing chemical (additive B).

Place, publisher, year, edition, pages
2004.
Keywords [en]
brightness reversion, mechanical pulp, optical brightening agents, bleaching, fluorescent whitening
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-29420OAI: oai:DiVA.org:miun-29420DiVA, id: diva2:1051894
Patent
SE SE524471(C2) (2004-08-10)
Note

International application 2004-06-17 (WO2004050994A1).

Available from: 2016-12-05 Created: 2016-12-05 Last updated: 2018-04-13Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

http://google.com/patents/WO2004050994A1?cl=en&hl=sv

Authority records BETA

Engstrand, Per

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