EP 2668335 B1 20150318 - A SOLVENT TAMPER-PROOF PAPER
Title (en)
A SOLVENT TAMPER-PROOF PAPER
Title (de)
EIN GEGENÜBER LÖSUNGSMITTEL FÄLSCHUNGSICHERES PAPIER
Title (fr)
PAPIER INFALSIFIABLE AUX SOLVANTS
Publication
Application
Priority
- FR 1100211 A 20110125
- FR 2011000630 W 20111201
Abstract (en)
[origin: WO2012101334A1] The present invention relates to a security paper that cannot be forged with respect to forgery attempts with non-aqueous solvents, characterized in that it comprises on its surface and/or in its bulk, clusters formed of elementary particles that are both insoluble in water and in solvents, amalgamated with an agglomerating agent that is also insoluble in water but almost instantaneously soluble in at least one non-aqueous solvent so as to release said elementary particles in the paper, which elementary particles are preferably less than 20 µm, and more preferably still less than 10 µm, they are coloured and are advantageously intense pigment dyestuffs such as those used for producing inks or paints.
IPC 8 full level
D21H 17/26 (2006.01); D21H 17/69 (2006.01); D21H 17/70 (2006.01); D21H 21/28 (2006.01); D21H 21/46 (2006.01)
CPC (source: EP US)
D21H 17/26 (2013.01 - EP US); D21H 17/69 (2013.01 - EP US); D21H 17/70 (2013.01 - EP US); D21H 21/28 (2013.01 - EP US); D21H 21/285 (2013.01 - EP US); D21H 21/40 (2013.01 - US); D21H 21/46 (2013.01 - EP US)
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
DOCDB simple family (publication)
FR 2970716 A1 20120727; FR 2970716 B1 20130906; BR 112013018554 A2 20181106; BR 112013018554 B1 20201103; BR 112013018554 B8 20221122; CA 2824673 A1 20120802; CA 2824673 C 20190115; EP 2668335 A1 20131204; EP 2668335 B1 20150318; ES 2539163 T3 20150626; MX 2013007873 A 20131001; RU 2013139436 A 20150310; US 2014027078 A1 20140130; US 9057159 B2 20150616; WO 2012101334 A1 20120802; ZA 201305205 B 20141223
DOCDB simple family (application)
FR 1100211 A 20110125; BR 112013018554 A 20111201; CA 2824673 A 20111201; EP 11811554 A 20111201; ES 11811554 T 20111201; FR 2011000630 W 20111201; MX 2013007873 A 20111201; RU 2013139436 A 20111201; US 201313945507 A 20130718; ZA 201305205 A 20130710