EP 2626464 B1 20170322 - Composition for paper deacidification, process to obtain it and method for its application
Title (en)
Composition for paper deacidification, process to obtain it and method for its application
Title (de)
Zusammensetzung zur Papierentsäuerung, Verfahren zum Erhalten davon und Verfahren zu ihrer Anwendung
Title (fr)
Composition de désacidification de papier, procédé permettant de l'obtenir et son procédé d'application
Publication
Application
Priority
EP 11464027 A 20111215
Abstract (en)
[origin: EP2626464A1] This invention relates to a new chemical composition comprising nanoparticles of hydroxyapatite, suspended in solution of carboxymethyl cellulose (50% : 50%) in isopropylic alcohol as solvent, this composition being used for paper deacidification purposes, by the anihilating the paper acidity from pH = 4.5 to alkaline range pH = 7.2.
IPC 8 full level
D21H 17/26 (2006.01); D21H 17/67 (2006.01); D21H 19/38 (2006.01); D21H 19/52 (2006.01); D21H 25/18 (2006.01)
CPC (source: EP)
D21H 25/18 (2013.01)
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11464027 A 20111215