INFRARED-ABSORBENT INK

WIPO Patent Application WO/2016/121801

A1

The purpose of the present invention is to provide an infrared-absorbent ink which has excellent infrared absorbing properties and safety and can be used as a printing ink for forgery prevention. The infrared-absorbent ink according to the present invention includes: 1.0% by mass to 25% by mass of fine particles of at one or more types of infrared-absorbent material selected from composite tungsten oxides represented by the general formula MxWyOz (M, W, O, x, y, and z in the formula being as defined in the specification) or tungsten oxides having a Magneli phase represented by the general formula WyOz (W, O, y, and z in the formula being as defined in the specification); and a vehicle. The vehicle includes a first solvent selected from vegetable oils or vegetable-oil-derived compounds, a second solvent selected from alcohols and having a boiling point of 180°C or lower, and a resin. The content of the second solvent is 2% by mass or less with respect to the mass of the infrared-absorbent ink.

KOBAYASHI FUMIHITO (JP)
YOSHIZUMI WATARU (JP)
KAWASAKI SHOTA (JP)
SHIBAOKA YOSHIAKI (JP)
AKIMOTO MASANORI (JP)
SHIMANE HIROAKI (JP)

PCT/JP2016/052288

August 04, 2016

January 27, 2016

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KYODO PRINTING CO LTD (JP)

C09D11/037; B42D25/382; C09D11/50; C09D17/00; C09K3/00

WO2005037932A1	2005-04-28
WO2012128332A1	2012-09-27

JP2006143778A	2006-06-08
JP2008291167A	2008-12-04
JP2012532822A	2012-12-20
JP2013112791A	2013-06-10
JP2013526625A	2013-06-24
JP2012229388A	2012-11-22
JP2015117353A	2015-06-25

AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)

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