EP 2626464 A1 20130814 - 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)
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)
Citation (applicant)
- DE 19921616 A1 20000518 - ZFB ZENTRUM FUER BUCHERHALTUNG [DE]
- AU 2003215817 A1 20031013 - CONSORZIO INTERUNIVERSITARIO P
- WO 03082742 A2 20031009 - CONSORZIO INTERUNIVERSITARIO P [IT], et al
- US 2005042380 A1 20050224 - BAGLIONI PIERO [IT], et al
- US 5091111 A 19920225 - NEUMILLER PHILLIP J [US]
- US 5208072 A 19930504 - KAMIENSKI CONRAD W [US], et al
- US 5770148 A 19980623 - LEINER LEE H [US], et al
- US 6676856 B1 20040113 - SMITH RICHARD DANIEL [US]
- RO 126570 A2 20110830 - INST NAŢIONAL DE CERCETARE DEZVOLTARE PENTRU CHIMIE ŞI PETROCHIMIE ICECHIM [RO]
- GIORGI, R.; BOZZI, C.; DEI GABBIANI, C.; NINHAM, B. W.; BAGLIONI, P., LANGMUIR, vol. 21, 2005, pages 8495 - 8501
- GIORGI, R.; DEI, SCHETTINO, L.; BAGLIONI, P: "Preprint of the IIC Baltimore Congress 2002", 2002, article "A new method for deacidification of paper-based on calcium hydroxide dispersed in aqueous environments", pages: 69
- BERNARDI, G., HYDROXYAPATITE CHROMATOGRAPHY OF PROTEINS, METHODS ENZYMOL, vol. 22, 1971, pages 32 - 339
Citation (search report)
- [A] EP 1132431 A1 20010912 - MITSUI CHEMICALS INC [JP]
- [A] US 2009148575 A1 20090611 - LANG-WITTKOWSKI GABRIELE [DE], et al
- [A] US 3676182 A 19720711 - SMITH RICHARD DANIEL
- [A] WO 2005083176 A1 20050909 - CONSERVACION DE SUSTRATOS CELU [ES], et al
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 ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11464027 A 20111215