Ink composition
AssigneeDnp Fine Chemicals Co., Ltd.
InventorsMasaki Inumaru, Yasuma Saito, Koujun Utaka, Karuna Iwasawa
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Abstract
An ink composition able to yield a printed adherend having high weathering resistance; wherein, this ink composition is an active energy ray curing type ink composition that is discharged using an inkjet method. The ink composition contains a polymerizable compound, an ultraviolet radiation absorber and an antioxidant. The ultraviolet radiation absorber has a maximum absorption wavelength within the range 315-400 nm. A medium containing the ultraviolet radiation absorber at a concentration of 20 ppm has an absorbance area Ab of 25.0 or more at wavelengths within the range of 315-400 nm.
Claims8
An active energy ray-curable ink composition to be discharged by an inkjet method, comprising:
- a polymerizable compound, an ultraviolet absorber, and an antioxidant,
- the ultraviolet absorber having a maximum absorption wavelength in a wavelength range of 315 nm or more and 400 nm or less, a medium containing the ultraviolet absorber at a concentration of 20 ppm having an absorbance area Ab in a wavelength range of 315 nm or more and 400 nm or less of 25.0 or more, and
- a NOR-type hindered amine compound as a light stabilizer.
A printed matter, comprising an adherend and a weatherable layer formed on the surface of the adherend,
- the weatherable layer including a cured product of a polymerizable compound, an ultraviolet absorber, and an antioxidant,
- the ultraviolet absorber having a maximum absorption wavelength in a wavelength range of 315 nm or more and 400 nm or less, a medium containing the ultraviolet absorber at a concentration of 20 ppm having an absorbance area Ab in a wavelength range of 315 nm or more and 400 nm or less of 25.0 or more, and
- the weatherable layer including a NOR-type hindered amine compound as a light stabilizer.
A recording method, comprising discharging an active energy ray-curable ink composition by an inkjet method,
- the ink composition comprising a polymerizable compound, an ultraviolet absorber, and an antioxidant,
- the ultraviolet absorber having a maximum absorption wavelength in a wavelength range of 315 nm or more and 400 nm or less, a medium containing the ultraviolet absorber at a concentration of 20 ppm having an absorbance area Ab in a wavelength range of 315 nm or more and 400 nm or less of 25.0 or more, and
- the ink composition further comprising a NOR-type hindered amine compound as a light stabilizer.
A method for producing a printed matter, comprising discharging an active energy ray-curable ink composition by an inkjet method,
- the ink composition including a polymerizable compound, an ultraviolet absorber, and an antioxidant,
- the ultraviolet absorber having a maximum absorption wavelength in a wavelength range of 315 nm or more and 400 nm or less, and a medium containing the ultraviolet absorber at a concentration of 20 ppm having an absorbance area Ab in a wavelength range of 315 nm or more and 400 nm or less of 25.0 or more, and
- the ink composition further comprising a NOR-type hindered amine compound as a light stabilizer.
Dependencies are inferred from the claim text.