Einzeltreffer — DigiBib

Provided are a near infrared absorbing fine particle dispersion liquid having an absorption ability in a near infrared region, a clear contrast, and applicable to offset printing, and a method for producing the same, an anti-counterfeit ink composition using the near infrared absorbing fine particle dispersion liquid and an anti-counterfeit printed matter using near infrared absorbing fine particles. Also provided are a near infrared absorbing fine particle dispersion liquid containing a solvent of one or more kinds selected from vegetable oils or vegetable oil-derived compounds; near infrared absorbing fine particles in an amount of 2 mass % or more and 25 mass % or less, selected from one or more kinds of hexaboride fine particles expressed by a general formula XBa (wherein element X is at least one or more kinds selected from a group consisting of La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Y, Sm, Eu, Er, Tm, Yb, Lu, Sr, and Ca, satisfying 4.0≤a≤6.2); and a dispersant soluble in the solvent and having a fatty acid in its structure, wherein viscosity is 180 mPa/S or less, and an anti-counterfeit ink composition containing the near infrared absorbing fine particle dispersion liquid. Also provided is an anti-counterfeit printed matter excellent in anti-counterfeit effect due to the printed matter containing the near infrared absorbing fine particles.

Titel:	Near infrared absorbing fine particle dispersion liquid and method for producing the same, anti-counterfeit ink composition using near infrared absorbing fine particle dispersion liquid, and anti-counterfeit printed matter using near infrared absorbing fine particles
Autor/in / Beteiligte Person:	SUMITOMO METAL MINING CO., LTD.
Link:	View record in USPTO Patent Grants (Volltext)
Veröffentlichung:	2020
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Grants Sprachen: English Patent Number: 10604,665 Publication Date: March 31, 2020 Appl. No: 15/546923 Application Filed: January 27, 2016 Assignees: SUMITOMO METAL MINING CO., LTD. (Tokyo, JP) Claim: 1. A method for producing a near infrared absorbing fine particle dispersion liquid, comprising: mixing and dispersing near infrared absorbing fine particles of hexaboride fine particles expressed by a general formula XB a (wherein element X is one or more kinds selected from the group consisting of La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Y, Sm, Eu, Er, Tm, Yb, Lu, Sr, and Ca, satisfying 4.0≤a≤6.2) in a solvent of one or more kinds selected from the group consisting of alcohols, ethers, esters, ketones, aromatic hydrocarbons and glycol ethers and having a boiling point of 180° C. or less, to thereby obtain a first dispersion liquid; adding and mixing a solvent of vegetable oils or vegetable oil-derived compounds in the first dispersion liquid, to thereby obtain a second dispersion liquid; and removing from the second dispersion liquid the solvent of one or more kinds selected from the group consisting of alcohols, ethers, esters, ketones, aromatic hydrocarbons and glycol ethers and having a boiling point of 180° C. or less, so that a content of the solvent becomes 5 mass % or less. Claim: 2. The method for producing the near infrared absorbing fine particle dispersion liquid according to claim 1 , wherein a concentration of the near infrared absorbing fine particles in the first dispersion liquid is 5 mass % or more and 50 mass % or less. Claim: 3. A method for producing a near infrared absorbing fine particle dispersion liquid, comprising: mixing a solvent of one or more kinds selected from the group consisting of alcohols, ethers, esters, ketones, aromatic hydrocarbons and glycol ethers and having a boiling point of 180° C. or less, and a solvent of vegetable oils or vegetable oil-derived compounds, to thereby obtain a mixed solvent; and mixing and dispersing in the mixed solvent near infrared absorbing fine particles of hexaboride fine particles expressed by a general formula XB a (wherein element X is one or more kinds selected from a group consisting of La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Y, Sm, Eu, Er, Tm, Yb, Lu, Sr, and Ca, satisfying 4.0≤a≤6.2), to thereby obtain a third dispersion liquid; and removing from the third dispersion liquid the solvent of one or more kinds selected from the group consisting of alcohols, ethers, esters, ketones, aromatic hydrocarbons and glycol ethers and having a boiling point of 180° C. or less, so that a content of the solvent becomes 5 mass % or less. Claim: 4. The method for producing the near infrared absorbing fine particle dispersion liquid according to claim 3 , wherein a concentration of the near infrared absorbing fine particles in the third dispersion liquid is 5 mass % or more and 50 mass % or less. Claim: 5. The method for producing the near infrared absorbing fine particles according to claim 1 , wherein a dispersant which is soluble in the solvent and has a fatty acid in its structure is added to the solvent of the vegetable oils or vegetable oil-derived compounds. Patent References Cited: 7282164 October 2007 Hall ; 2008/0182930 July 2008 Adachi ; 2008/0311308 December 2008 Lee et al. ; 2009/0029121 January 2009 Hammermann et al. ; 2010/0178471 July 2010 Adachi ; 2011/0230603 September 2011 Yoda et al. ; 102079895 June 2011 ; 2981359 April 2013 ; H04-320466 November 1992 ; H11-181336 July 1999 ; 2000-096034 April 2000 ; 2000-309736 November 2000 ; 2004-168842 June 2004 ; 2006-143778 June 2006 ; 2008-509271 March 2008 ; 2008-169294 July 2008 ; 2008-291167 December 2008 ; 2009108324 May 2009 ; WO 03/057785 July 2003 ; WO 2012/103578 August 2012 Other References: English abstract of FR 2981359, Apr. 19, 2013, France. cited by examiner ; Apr. 26, 2016 Search Report issued in International Patent Application No. PCT/JP2016/052399. cited by applicant ; Apr. 26, 2016 Written Opinion issued in International Patent Application No. PCT/JP2016/052399. cited by applicant ; May 10, 2019 Office Action issued in Australian Patent Application No. 2016213101. cited by applicant Primary Examiner: Yoon, Tae H Attorney, Agent or Firm: Oliff PLC

Klicken Sie ein Format an und speichern Sie dann die Daten oder geben Sie eine Empfänger-Adresse ein und lassen Sie sich per Email zusenden.

BibTeX Citavi, JabRef, u.a.
(Literaturverwaltung)

PDF kein Volltext!
(Merkzettel, Notizen)

RIS Endnote, Citavi u.a.
(Literaturverwaltung)

MODS
(XML zur Weiterverarbeitung)

oder

Wählen Sie das für Sie passende Zitationsformat und kopieren Sie es dann in die Zwischenablage, lassen es sich per Mail zusenden oder speichern es als PDF-Datei.

Gewünschter Zitations-Stil:

oder

Bitte prüfen Sie, ob die Zitation formal korrekt ist, bevor Sie sie in einer Arbeit verwenden. Benutzen Sie gegebenenfalls den "Exportieren"-Dialog, wenn Sie ein Literaturverwaltungsprogramm verwenden und die Zitat-Angaben selbst formatieren wollen.

Near infrared absorbing fine particle dispersion liquid and method for producing the same, anti-counterfeit ink composition using near infrared absorbing fine particle dispersion liquid, and anti-counterfeit printed matter using near infrared absorbing fine particles