COATED COLORANT, COLORING COMPOSITION, AND COATED COLORANT MANUFACTURING METHOD
A purpose of the present disclosure is to provide a coated colorant and a coloring composition that have superior dispersion stability, high compatibility with binder resins, low viscosity after being made into an ink, good preservation stability, and a good film gloss value. Provided is a coated colorant in which a surface of a colorant is coated with a resin (P), the resin (P) contains a colorant adsorption group-containing monomer unit, a maleic acid (anhydride) unit, and a (meth)aryl monomer unit, and the colorant adsorption group-containing monomer unit contains at least one of an α-olefin unit and a ring-containing monomer unit.
1 . A coated colorant, comprising:
a resin (P) which is coated on a surface of a colorant,
wherein the resin (P) contains a colorant adsorption group-containing monomer unit, a maleic acid (anhydride) unit, and a (meth)allyl monomer unit, and
the colorant adsorption group-containing monomer unit contains at least one of an α-olefin unit and a ring-containing monomer unit.
2 . The coated colorant according to claim 1 ,
wherein the (meth)allyl monomer unit has a (poly)alkyleneoxy group.
3 . The coated colorant according to claim 1 ,
wherein a number average molecular weight of the resin (P) is 2,000 to 35,000.
4 . The coated colorant according to claim 2 ,
wherein a number average molecular weight of the resin (P) is 2,000 to 35,000.
5 . The coated colorant according to claim 1 ,
wherein the maleic acid (anhydride) unit of the resin (P) has an ester binding site, an amide binding site, or an imide binding site.
6 . The coated colorant according to claim 2 ,
wherein the maleic acid (anhydride) unit of the resin (P) has an ester binding site, an amide binding site, or an imide binding site.
7 . The coated colorant according to claim 3 ,
wherein the maleic acid (anhydride) unit of the resin (P) has an ester binding site, an amide binding site, or an imide binding site.
8 . The coated colorant according to claim 4 ,
wherein the maleic acid (anhydride) unit of the resin (P) has an ester binding site, an amide binding site, or an imide binding site.
9 . The coated colorant according to claim 1 ,
wherein 1 to 30 mol % of the (meth)allyl monomer unit is contained in all the units of the resin (P).
10 . The coated colorant according to claim 2 ,
wherein 1 to 30 mol % of the (meth)allyl monomer unit is contained in all the units of the resin (P).
11 . The coated colorant according to claim 3 ,
wherein 1 to 30 mol % of the (meth)allyl monomer unit is contained in all the units of the resin (P).
12 . The coated colorant according to claim 4 ,
wherein 1 to 30 mol % of the (meth)allyl monomer unit is contained in all the units of the resin (P).
13 . The coated colorant according to claim 5 ,
wherein 1 to 30 mol % of the (meth)allyl monomer unit is contained in all the units of the resin (P).
14 . The coated colorant according to claim 6 ,
wherein 1 to 30 mol % of the (meth)allyl monomer unit is contained in all the units of the resin (P).
15 . The coated colorant according to claim 7 ,
wherein 1 to 30 mol % of the (meth)allyl monomer unit is contained in all the units of the resin (P).
16 . The coated colorant according to claim 8 ,
wherein 1 to 30 mol % of the (meth)allyl monomer unit is contained in all the units of the resin (P).
17 . A coloring composition comprising:
the coated colorant according to claim 1 ; and
a cross-linking agent.
18 . The coated colorant according to claim 1 ,
wherein the coated colorant is used for inks for ink jet recording, flexographic printing inks, toners, paints, stationery, or printing agents.
19 . A manufacturing method of a coated colorant, comprising:
a step of kneading a water-soluble solvent, a water-soluble inorganic salt, a colorant, and a resin (P) to coat a surface of the colorant with the resin (P), and then removing the water-soluble inorganic salt and the water-soluble solvent,
wherein the resin (P) contains a colorant adsorption group-containing monomer unit, a maleic acid (anhydride) unit, and a (meth)allyl monomer unit.
20 . A manufacturing method of a coloring composition, comprising:
mixing the coated colorant obtained by the manufacturing method according to claim 19 , a basic compound, and water, and then mixing a cross-linking agent to cross-link a resin (P).