Ultraviolet-curable ink jet composition and storage body thereof
There is provided an ultraviolet-curable ink jet composition, which is stored in an storage body, including a pigment; a pigment dispersant; a polymerizable compound; and a photopolymerization initiator, in which water content is 0.05 mass % to 1.0 mass % based on the total amount of the ultraviolet-curable ink jet composition, and in which both the acid value and the amine value of the pigment dispersant are 50 mgKOH/g or less, and at least one of the acid value and the amine value thereof is 10 mgKOH/g or more.
1. An ultraviolet-curable ink jet composition, which is stored in a storage body, comprising:
a pigment;
a pigment dispersant;
a polymerizable compound; and
a photopolymerization initiator,
wherein water content is 0.05 mass % to 1.0 mass % based on the total amount of the ultraviolet-curable ink jet composition, and
wherein both the acid value and the amine value of the pigment dispersant are 50 mgKOH/g or less, and at least one of the acid value and the amine value thereof is 10 mgKOH/g or more.
2. The ultraviolet-curable ink jet composition according to claim 1 ,
wherein the total amount of the acid value and the amine value of the pigment dispersant are 15 mgKOH/g to 90 mgKOH/g.
3. The ultraviolet-curable ink jet composition according to claim 1 ,
wherein the composition comprises a radical polymerizable compound as the polymerizable compound.
4. The ultraviolet-curable ink jet composition according to claim 1 ,
wherein the composition comprises an acylphosphine oxide compound as the photopolymerization initiator.
5. The ultraviolet-curable ink jet composition according to claim 1 ,
wherein the polymerizable compound having a vinyl ether group and a (meth)acrylate group is included in an amount of 10 mass % to 70 mass % based on the total amount of the ultraviolet-curable ink jet composition.
6. The ultraviolet-curable ink jet composition according to claim 1 , further comprising a (meth)acrylic acid ester containing a vinyl ether group, wherein said (meth)acrylic acid ester is 2-(vinyloxyethoxy) ethyl acrylate.
7. A storage body, which stores the ultraviolet-curable ink jet composition according to claim 1 .
8. A storage body, which stores the ultraviolet-curable ink jet composition according to claim 2 .
9. A storage body, which stores the ultraviolet-curable ink jet composition according to claim 3 .
10. A storage body, which stores the ultraviolet-curable ink jet composition according to claim 4 .
11. A storage body, which stores the ultraviolet-curable ink jet composition according to claim 5 .
12. A storage body, which stores the ultraviolet-curable ink jet composition according to claim 6 .
13. The storage body according to 7 ,
wherein the storage body is configured such that a container made of a member having an oxygen permeability of 0.01 cc to 5.0 cc·20 μm/(m 2 ·day·atm) at a temperature of 23° C. and a humidity of 65% is filled with the ultraviolet-curable ink jet composition, or is configured such that a container filled with the ultraviolet-curable ink jet composition is sealed with a package made of a member having an oxygen permeability of 0.01 cc to 5.0 cc·20 μm/(m 2 ·day·atm) at a temperature of 23° C. and a humidity of 65%.