INK COMPOSITION

WIPO Patent Application WO/2022/092272

A1

Provided is an ink composition from which printed matter having excellent rubfastness while maintaining excellent metallic glossiness can be obtained.　This ink composition is of an active energy ray curable-type and is to be discharged by an inkjet method, contains a polymerizable compound and a photoluminescent pigment, and contains a wax in a range of 0.05-1.0 mass% with respect to the total amount of the ink composition. The melting point of the wax is preferably in a range of 20-80°C. Further, this non-aqueous ink composition is to be discharged by an inkjet method, contains an organic solvent represented by formula (1) and a photoluminescent pigment, and contains a wax in a range of 0.05-1.0 mass% with respect to the total amount of the non-aqueous ink composition. (In formula (1), R1 represents an alkyl group that is optionally branched and that has 1-8 carbon atoms, R2 represents an alkylene group that is optionally branched and that has 1-4 carbon atoms, R3 represents hydrogen or an alkyl group that is optionally branched and that has 1-8 carbon atoms, and n represents an integer of 1-4.)

YAMAZAKI FUMIE (JP)
ISHIMA YUKIKO (JP)
KOTANI RYOSUKE (JP)
YASUI RYOMA (JP)

PCT/JP2021/040052

May 05, 2022

October 29, 2021

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DNP FINE CHEMICALS CO LTD (JP)

B41J2/01; B41M5/00; C09D11/322; C09D11/36

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SHOBAYASHI Masayuki et al. (JP)

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