WO2008072193A2 - Security composition - Google Patents

Security composition Download PDF

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Publication number
WO2008072193A2
WO2008072193A2 PCT/IB2007/055048 IB2007055048W WO2008072193A2 WO 2008072193 A2 WO2008072193 A2 WO 2008072193A2 IB 2007055048 W IB2007055048 W IB 2007055048W WO 2008072193 A2 WO2008072193 A2 WO 2008072193A2
Authority
WO
WIPO (PCT)
Prior art keywords
composition
pigment
weight
dye
lumogen
Prior art date
Application number
PCT/IB2007/055048
Other languages
French (fr)
Other versions
WO2008072193A3 (en
Inventor
Seth Alaric Peters
Original Assignee
Liquid Colours (Pty) Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liquid Colours (Pty) Ltd filed Critical Liquid Colours (Pty) Ltd
Publication of WO2008072193A2 publication Critical patent/WO2008072193A2/en
Publication of WO2008072193A3 publication Critical patent/WO2008072193A3/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/16—Writing inks
    • C09D11/20—Writing inks indelible
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/20—Diluents or solvents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder

Definitions

  • This invention relates to a composition for identifying objects, in particular bank notes.
  • Dyes have been used to stain bank notes which have been stolen.
  • Some containers for transporting bank notes include a canister containing a dye. When the container is stolen, the canister receives a signal to discharge the dye onto the stolen bank notes.
  • a problem with dyes which have been used in the past is that thieves have been able to clean and remove the dye by using solvents and/or chemicals.
  • a first aspect of the invention relates to a composition for staining an object such as a bank note (including plastic-based and paper-based bank notes), the composition including a solvent, a thermoplastic resin and a pigment or dye.
  • the solvent may include a dibasic ester and/or a dipolar aprotic solvent such as n-methyl pyrrolidone, and/or a glycol ether ester such as butyl glycol acetate.
  • the dibasic ester may be selected from the group consisting of dimethyl adipate, dimethyl glutarate and dimethyl succinate, preferably dimethyl glutarate.
  • the thermoplastic resin may be an acrylic monomer.
  • the pigment or dye may be selected from metal complex dyes and acid dyes.
  • the composition includes a pigment which is identifiable under infrared light at an identifiable wave length, for example LumogenTM.
  • the LumogenTM typically comprises 0.1 - 2%, preferably 0.1 - 0.5% by weight of the composition.
  • a second aspect of the invention relates to printing ink which contains a pigment which is identifiable under infrared light at an identifiable wave length, for example LumogenTM.
  • the LumogenTM typically comprises 0.01 - 2%, preferably 0.1 - 0.5% by weight of the printing ink.
  • LumogenTM which are suitable for use in the present invention are LumogenTM IR765 and LumogenTM IR788.
  • the invention also relates to an object such as a bank note or other printed object or media having printing ink as described above thereon.
  • a first aspect pf this invention relates to a composition for identifying an object such as a bank note.
  • the composition includes:
  • dipolar aprotic solvent typically 30-40% by weight dipolar aprotic solvent, namely n- methyl pyrrolidone (a solvent);
  • glycol ether ester typically 30-35% by weight glycol ether ester, namely butyl glycol acetate (a solvent);
  • acrylic monomer such as a copolymer of methyl methacrylate butyl methacrylate
  • pigment or dye such as metal complex dyes and acid dyes; and in a preferred embodiment
  • solvents and resins used in the composition of the invention are non-flammable and are suitable for use in canisters for use in the containers described in the Background of the Invention. Furthermore, the solvents and resins are free of tetrahydrofuranone and methylene chloride which have been used in the past but which have been found to be hazardous to human health.
  • composition of the invention is that once applied to paper bank notes, it is not possible to remove the composition from such bank notes using solvents, acids or chemicals.
  • the composition is suitable for use on plastic/polyester bank notes which are not porous. An attempt to remove the composition from such bank notes, will deface the bank notes.
  • the LumogenTM which may be an aldazine pigment, is included in the composition of the invention at very low quantities, but there is enough LumogenTM present to be picked up and identified by an infrared/lazer reader or scanner.
  • the LumogenTM reflects infrared light at a particular identifiable wavelength, and this can be used to identify an object to which the composition has been applied.
  • Preferred examples of LumogenTM which are suitable for use in the present invention are Lumogen IR765 and Lumogen IR788.
  • a second aspect of the invention relates to a printing ink containing a pigment which is identifiable under infrared light at an identifiable wave length, for example LumogenTM.
  • the LumogenTM typically comprises 0.01 - 2%, preferably 0.1 - 0.5% by weight of the printing ink.
  • Preferred examples of LumogenTM which are suitable for use in the present invention are LumogenTM IR765 and LumogenTM IR788.
  • the invention also relates to an object such as a bank note or other printed objected or media having the printing ink as described above thereon.
  • Example 1 Composition suitable for staining paper and plastic bank notes.
  • Example 2 Composition suitable for staining paper and plastic bank notes and includes LumogenTM for identification with an infrared scanner.

Abstract

A first aspect of the invention relates to a composition for staining an object such as a bank note (including plastic-based and paper-based bank notes), the composition including a solvent, a thermoplastic resin and a pigment or dye. The composition is non-flammable and are suitable for use in canisters for use in staining bank notes that have been stolen. An advantage of the composition of the invention is that once applied to paper bank notes, it is not possible to remove the composition from such bank notes using solvents, acids or chemicals. A second aspect of the invention relates to a printing ink containing a pigment which is identifiable under infrared light at an identifiable wave length.

Description

SECURITY COMPOSITION
BACKGROUND OF THE INVENTION
This invention relates to a composition for identifying objects, in particular bank notes.
Dyes have been used to stain bank notes which have been stolen. Some containers for transporting bank notes include a canister containing a dye. When the container is stolen, the canister receives a signal to discharge the dye onto the stolen bank notes. A problem with dyes which have been used in the past is that thieves have been able to clean and remove the dye by using solvents and/or chemicals.
It is an object this invention to provide a composition for application to an object such as a bank note which cannot be removed from the object, and also to provide a composition for the identification of the object. SUMMARY OF THE INVENTION
A first aspect of the invention relates to a composition for staining an object such as a bank note (including plastic-based and paper-based bank notes), the composition including a solvent, a thermoplastic resin and a pigment or dye.
The solvent may include a dibasic ester and/or a dipolar aprotic solvent such as n-methyl pyrrolidone, and/or a glycol ether ester such as butyl glycol acetate.
The dibasic ester may be selected from the group consisting of dimethyl adipate, dimethyl glutarate and dimethyl succinate, preferably dimethyl glutarate.
The thermoplastic resin may be an acrylic monomer.
The pigment or dye may be selected from metal complex dyes and acid dyes.
Preferably, the composition includes a pigment which is identifiable under infrared light at an identifiable wave length, for example Lumogen™.
The Lumogen™ typically comprises 0.1 - 2%, preferably 0.1 - 0.5% by weight of the composition.
A second aspect of the invention relates to printing ink which contains a pigment which is identifiable under infrared light at an identifiable wave length, for example Lumogen™.
The Lumogen™ typically comprises 0.01 - 2%, preferably 0.1 - 0.5% by weight of the printing ink.
Preferred examples of Lumogen™ which are suitable for use in the present invention are Lumogen™ IR765 and Lumogen™ IR788. The invention also relates to an object such as a bank note or other printed object or media having printing ink as described above thereon.
DETAILED DESCRIPTION
A first aspect pf this invention relates to a composition for identifying an object such as a bank note. The composition includes:
1. 15 - 35%, typically 30-35% by weight dibasic ester (a solvent);
2. 15 - 40%, typically 30-40% by weight dipolar aprotic solvent, namely n- methyl pyrrolidone (a solvent);
3. 15 - 35%, typically 30-35% by weight glycol ether ester, namely butyl glycol acetate (a solvent);
4. 1 - 5%, typically 1-3% by weight acrylic monomer (a thermoplastic resin) such as a copolymer of methyl methacrylate butyl methacrylate;
5. 2 - 15% by weight pigment or dye such as metal complex dyes and acid dyes; and in a preferred embodiment
6. 0.1 - 2%, typically 0.1 - 0.2% Lumogen™ available from BASF Aktiengesellschaft.
The combination of solvents and resins used in the composition of the invention are non-flammable and are suitable for use in canisters for use in the containers described in the Background of the Invention. Furthermore, the solvents and resins are free of tetrahydrofuranone and methylene chloride which have been used in the past but which have been found to be hazardous to human health.
An advantage of the composition of the invention is that once applied to paper bank notes, it is not possible to remove the composition from such bank notes using solvents, acids or chemicals. In addition to this, the composition is suitable for use on plastic/polyester bank notes which are not porous. An attempt to remove the composition from such bank notes, will deface the bank notes. The Lumogen™, which may be an aldazine pigment, is included in the composition of the invention at very low quantities, but there is enough Lumogen™ present to be picked up and identified by an infrared/lazer reader or scanner. The Lumogen™ reflects infrared light at a particular identifiable wavelength, and this can be used to identify an object to which the composition has been applied. Preferred examples of Lumogen™ which are suitable for use in the present invention are Lumogen IR765 and Lumogen IR788.
A second aspect of the invention relates to a printing ink containing a pigment which is identifiable under infrared light at an identifiable wave length, for example Lumogen™. The Lumogen™ typically comprises 0.01 - 2%, preferably 0.1 - 0.5% by weight of the printing ink. Preferred examples of Lumogen™ which are suitable for use in the present invention are Lumogen™ IR765 and Lumogen™ IR788. The invention also relates to an object such as a bank note or other printed objected or media having the printing ink as described above thereon.
The invention will now be described in more detail with reference to the following non-limiting examples:
Example 1 - Composition suitable for staining paper and plastic bank notes.
Figure imgf000005_0001
Example 2 - Composition suitable for staining paper and plastic bank notes and includes Lumogen™ for identification with an infrared scanner.
Figure imgf000006_0001
Example 3 - Intaglio printing Ink
Figure imgf000006_0002
Example 6 - Flourescent printing Ink
Figure imgf000007_0001

Claims

1. A composition for staining an object, the composition including a solvent, a thermoplastic resin and a pigment/s or dye/s.
2. The composition as claimed in claim 1 , wherein the solvent includes a dibasic ester and/or a dipolar aprotic solvent, and/or a glycol ether ester.
3. The composition as claimed in claim 2, wherein the solvent includes a dibasic ester and a dipolar aprotic solvent, and a glycol ether ester.
4. The composition as claimed in claim 2 or 3, wherein the dibasic ester is selected from the group consisting of dimethyl adipate, dimethyl glutarate and dimethyl succinate.
5. The composition as claimed in claim 4, wherein the dibasic ester is dimethyl glutarate.
6. The composition as claimed in any one of claims 2 to 5, wherein the dipolar aprotic solvent is n-methyl pyrrolidone.
7. The composition as claimed in any one of claims 2 to 6, wherein the glycol ether ester is butyl glycol acetate.
8. The composition as claimed in any one of the preceding claims, wherein the thermoplastic resin is an acrylic monomer.
9. The composition as claimed in any one of the preceding claims, wherein the pigment or dye is a metal complex dye or acid dye.
10. The composition as claimed in any one of the preceding claims, includes a pigment which is identifiable under infrared light at an identifiable wave length.
11. The composition as claimed in claim 10, wherein said pigment is Lumogen™.
12. The composition as claimed in claim 10 or 11 , wherein said pigment comprises 0.1 - 2% by weight of the composition.
13. The composition as claimed in claim 12, wherein said pigment 0.1 - 0.2% by weight of the composition.
14. The composition as claimed in any one of claims 2 to 13, wherein the dibasic ester comprises 15 - 35% by weight of the composition.
15. The composition as claimed in claim 14, wherein the dibasic ester comprises 30-35% by weight of the composition.
16. The composition as claimed in any one of claims 2 to 15, wherein the dipolar aprotic solvent comprises 15 - 35% by weight of the composition.
17. The composition as claimed in claim 16, wherein the dipolar aprotic solvent comprises 30-35% by weight of the composition.
18. The composition as claimed in any one of claims 2 to 15, wherein the glycol ether ester comprises 15 - 35% by weight of the composition.
19. The composition as claimed in claim 18, wherein the glycol ether ester comprises 30-35% by weight of the composition.
20. The composition as claimed in any one of claims 9 to 19, wherein the metal complex dye or acid dye comprises 2 - 15% by weight of the composition.
21. A printing ink containing a pigment which is identifiable under infrared light at an identifiable wave length.
22. The printing ink as claimed in claim 21 , wherein the pigment is Lumogen™.
RECTIFIED SHEET (RULE 91) ISA/EP
3. An object having printing ink as defined in claim 21 or claim 22 thereon.
RECTIFIED SHEET (RULE 91) ISA/EP
PCT/IB2007/055048 2006-12-15 2007-12-12 Security composition WO2008072193A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ZA2006/10583 2006-12-15
ZA200610583 2006-12-15
ZA2007/04832 2007-07-02
ZA200704832 2007-07-02

Publications (2)

Publication Number Publication Date
WO2008072193A2 true WO2008072193A2 (en) 2008-06-19
WO2008072193A3 WO2008072193A3 (en) 2008-12-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/055048 WO2008072193A2 (en) 2006-12-15 2007-12-12 Security composition

Country Status (1)

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WO (1) WO2008072193A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011028274A3 (en) * 2009-09-03 2011-07-28 Rhodia Operations Protective biodegradable coatings and methods for use
EP2466561A1 (en) 2010-12-16 2012-06-20 G4S Cash Solutions (UK) Limited Staining kit for staining valuables, apparatus and method
EP2577619B2 (en) † 2010-05-26 2022-06-01 CI Tech Sensors AG Anti-theft ink for marking documents

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003763A1 (en) * 1984-12-18 1986-07-03 Hoechst Aktiengesellschaft Pulverulent pigments having improved rheologic properties, method for the production and utilization thereof with a contents of at least 5% of non substituted chinacridon
EP1486542A1 (en) * 2003-06-12 2004-12-15 Hitachi Maxell, Ltd. Oil-based pigmented ink composition
WO2005007758A2 (en) * 2003-07-03 2005-01-27 C Steven Mcdaniel Antifungal and antibacterial coating compositions
WO2006097502A1 (en) * 2005-03-18 2006-09-21 Imaje S.A. Ink composition for continuous deflected ink jet printing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200641560A (en) * 2005-02-09 2006-12-01 Showa Denko Kk Photosensitive composition removing liquid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003763A1 (en) * 1984-12-18 1986-07-03 Hoechst Aktiengesellschaft Pulverulent pigments having improved rheologic properties, method for the production and utilization thereof with a contents of at least 5% of non substituted chinacridon
EP1486542A1 (en) * 2003-06-12 2004-12-15 Hitachi Maxell, Ltd. Oil-based pigmented ink composition
WO2005007758A2 (en) * 2003-07-03 2005-01-27 C Steven Mcdaniel Antifungal and antibacterial coating compositions
WO2006097502A1 (en) * 2005-03-18 2006-09-21 Imaje S.A. Ink composition for continuous deflected ink jet printing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 200662 Thomson Scientific, London, GB; AN 2006-601913 XP002479210 & JP 2006 251785 A (SHOWA DENKO KK) 21 September 2006 (2006-09-21) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011028274A3 (en) * 2009-09-03 2011-07-28 Rhodia Operations Protective biodegradable coatings and methods for use
EP2577619B2 (en) † 2010-05-26 2022-06-01 CI Tech Sensors AG Anti-theft ink for marking documents
EP2466561A1 (en) 2010-12-16 2012-06-20 G4S Cash Solutions (UK) Limited Staining kit for staining valuables, apparatus and method

Also Published As

Publication number Publication date
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