摘要:
Problem: To provide a microencapsulated color material for an ink composition which is excellent in dispersion stability, ejection stability and color developability, excellent in fastness and rubbing resistance of images, and hard to cause blurs of images, and can provide recorded matter having high print density; an ink composition using the color material; a production process thereof; an ink jet recording process; recorded matter; and microencapsulated matter.Means for Resolution: A surface of a core material including color material particles such as a pigment is covered with a wall material mainly comprising: 1) a polymer (A) having an ionic group and a hydrophobic group; and 2) a polymer (B) having at least; repeating structural units derived from a first polymerizable surfactant having an ionic group with a charge opposite to the charge of the ionic group of the polymer, a hydrophobic group and a polymerizable group; and repeating structural units derived from a second polymerizable surfactant having a charge of the same kind as or opposite to the charge of the first polymerizable surfactant, and/or a hydrophilic monomer having a charge of the same kind as or opposite to the charge of the ionic group of the polymer and/or a hydrophobic monomer, thereby performing microencapsulation. The color material particles such as the pigment are used as the core material, and a color material obtained by microencapsulating them is allowed to be contained in an aqueous medium to form an ink composition, which is ejected from an ink head onto a recording medium by an ink jet recording process, thereby obtaining recorded matter. By constituting the core material by a pharmaceutical preparation, a metal powder, a ceramic or the like, surface modification of the core material becomes possible.
摘要:
For the purpose of providing a urethane(meth)acrylate excellent in emulsifiability in water and a production method thereof, and a light curable aqueous emulsion using the urethane(meth)acrylate having a low viscosity and excellent in the curability, provided is a urethane(meth)acrylate being represented by the following general formula (1) and having a weight average molecular weight of 1,000 to 10,000: A1-O—(CONH—B1-NHCOO—C1-O)n-CONH—B1-NH—COO-D1 (1) wherein in formula (1), n represents a natural number of 1 to 30, A1 represents a residue of a hydroxyl group-containing (meth)acrylate, B1 represents a residue of diisocyanate, C1 represents a residue of a diol of an acyclic hydrocarbon or a cyclic hydrocarbon, and D1 represents a residue of a polyoxyalkylene glycol monoalkyl ether.
摘要:
A radiation-curable ink composition contains (A) aminoacrylate at 1 mass % to 10 mass %, inclusive, (B) phenoxyethyl acrylate at 20 mass % to 50 mass %, inclusive, and (C) tetraethylene glycol diacrylate at 1 mass % to 20 mass %, inclusive, in its reaction component, as well as (E) bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide at 3 parts by mass to 8 parts by mass, inclusive, (F) 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide at 3 parts by mass to 5 parts by mass, inclusive, in 100 parts by mass of the reaction component, and (G) diethylthioxanthone at 1 part by mass to 3 parts by mass, inclusive, in 100 parts by mass of the reaction component.
摘要:
Disclosed are a colorant which can realize an ink compositions possessing excellent lightfastness, waterfastness, color development, and rubbing/scratch resistance, and an ink composition containing the same. The ink composition comprises at least a colorant, a polymer covering the colorant and having, in its molecular chain, sites possessing ultraviolet absorbing activity and/or photostabilizing activity, water, and a water-soluble organic solvent. The ink composition according to the present invention include two preferred embodiments. In the ink composition according to the first preferred embodiment, the polymer functions as a dispersant and covers the colorant. In the ink composition according to the second preferred embodiment, the polymer is in the form of fine particles covering the colorant. Further, the colorant comprises: a dye or a pigment; and a polymer covering the colorant and having, in its molecular chain, sites possessing ultraviolet absorbing activity and/or photostabilizing activity, the dye or the pigment being in the form of fine particles.
摘要:
The present invention relates to a microencapsulated pigment in which pigment particles having cationic groups on their surfaces are coated with a polymer having repeating structural units derived from an anionic polymerizable surfactant having at least an anionic group, a hydrophobic group and a polymerizable group, and a microencapsulated pigment in which pigment particles having anionic groups on their surfaces are coated with a polymer having repeating structural units derived from a cationic polymerizable surfactant having a cationic group, a hydrophobic group and a polymerizable group. Further, the invention relates to a process for producing the microencapsulated pigment, an aqueous dispersion containing the microencapsulated pigment, and an ink jet recording ink containing the aqueous dispersion.
摘要:
An ink jet recording method comprising a step of bringing a first ink composition into contact with a second ink composition on a recording medium to form an aggregate, wherein the first ink composition comprises at least a water-soluble organic solvent, water and a coloring agent comprising a coloring material enclosed with a polymer having an anionic group, and wherein the second ink composition comprising at least a water-soluble organic solvent, water and a coloring agent comprising a coloring material enclosed with a polymer having a cationic group. Also disclosed are ink sets suitable for the ink jet recording method.
摘要:
An addition reaction-type dimethylsilicone composition, including a diorganopolysiloxane containing a reactive vinyl group; an organopolysiloxane containing an active hydrogen atom; and silicic acid fine powder of which surface has been treated with a fluoroalkylsilane, an alkylsilane compound, a fluorosilicone oil, a dimethylsilicone oil, or a mixture thereof, and a silane compound containing an unsaturated group having a reactivity to the organopolysiloxane containing an active hydrogen atom.
摘要:
An addition reaction-type dimethylsilicone composition, including a diorganopolysiloxane containing a reactive vinyl group; an organopolysiloxane containing an active hydrogen atom; and silicic acid fine powder of which surface has been treated with a fluoroalkylsilane, an alkylsilane compound, a fluorosilicone oil, a dimethylsilicone oil, or a mixture thereof, and a silane compound containing an unsaturated group having a reactivity to the organopolysiloxane containing an active hydrogen atom.
摘要:
The present invention relates to encapsulated matter comprising a core material having a charge on a surface thereof and a plurality of coating layers each mainly comprising a polymer with which the core material is coated, the layers comprising at least a first coating layer and a second coating layer, wherein the polymer constituting the first coating layer which contacts the core material comprises at least: (1) a repeating structural unit derived from an ionic polymerizable surfactant A and/or an ionic monomer, each having a charge opposite to the surface charge of the core material; and (2) a repeating structural unit derived from an ionic polymerizable surfactant B having a charge of the same kind as or opposite to the surface charge of the core material, and the polymer constituting the second coating layer which contacts the outside of the first coating layer comprises at least: (3) a repeating structural unit derived from an ionic polymerizable surfactant C and/or an ionic monomer, each having a charge opposite to the surface charge of the first coating layer; and (4) a repeating structural unit derived from an ionic polymerizable surfactant D having a charge of the same kind as or opposite to the surface charge of the first coating layer.
摘要:
An ink jet recording ink (IJ ink) containing a colorant of a pigment and/or dye enveloped in a polymer, and water, and containing at least one compound from the group of acetylene glycol surfactants and acetylene alcohol surfactants, and another compound from the group of glycol ethers and 1,2-alkylene glycols; an IJ ink set including a plurality of the inks; a recording method of using the ink and/or the ink set; recorded matter printed according to the recording method; and an ink jet recording apparatus having an electrostrictive unit mounted thereon and designed so as to be capable of ejecting the ink.