EP 4176121 A1 20230510 - FIBROUS COMPOSITION FOR A SHEET OF PAPER, IN PARTICULAR SECURITY PAPER
Title (en)
FIBROUS COMPOSITION FOR A SHEET OF PAPER, IN PARTICULAR SECURITY PAPER
Title (de)
FASERZUSAMMENSETZUNG FÜR EINE PAPIERBAHN, INSBESONDERE SICHERHEITSPAPIER
Title (fr)
COMPOSITION FIBREUSE POUR FEUILLE DE PAPIER, EN PARTICULIER DE SECURITE
Publication
Application
Priority
- FR 2007003 A 20200702
- EP 2021068269 W 20210701
Abstract (en)
[origin: WO2022003139A1] The present invention relates to a fibrous composition, in particular suitable for use for preparing a sheet of paper, in particular security paper, comprising at least - a cellulosic fibrous material made from cotton fibres and free of wood fibres, and - a wet strength agent that is reactive towards carboxylic functions, the cellulosic fibrous material also having cellulosic fibres, referred to as hemicellulose fibres, having a hemicellulose content of at least 18% by weight relative to the total weight of the hemicellulose fibres, and a hemicellulose content of at least 0.7% by weight relative to the total weight of the cellulosic fibrous material. It also relates to a sheet of paper comprising it, and the implementation thereof in a security and/or value document.
IPC 8 full level
D21H 11/12 (2006.01); D21H 17/24 (2006.01); D21H 17/26 (2006.01); D21H 17/55 (2006.01); D21H 17/56 (2006.01); D21H 21/20 (2006.01); D21H 21/40 (2006.01)
CPC (source: EP)
D21H 11/12 (2013.01); D21H 17/24 (2013.01); D21H 17/26 (2013.01); D21H 17/55 (2013.01); D21H 17/56 (2013.01); D21H 21/20 (2013.01); D21H 21/40 (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 ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
FR 3112151 A1 20220107; FR 3112151 B1 20220722; BR 112022026571 A2 20230117; CN 116507773 A 20230728; EP 4176121 A1 20230510; EP 4176121 B1 20240904; KR 20230040341 A 20230322; WO 2022003139 A1 20220106
DOCDB simple family (application)
FR 2007003 A 20200702; BR 112022026571 A 20210701; CN 202180057136 A 20210701; EP 2021068269 W 20210701; EP 21737689 A 20210701; KR 20237003548 A 20210701