An aqueous dispersion of a capsule composed of a polymeric shell surrounding a core, the core containing an amine blocked isocyanate, the amine blocked isocyanate comprises at least two isocyanate groups blocked by a blocking group, the blocking groups are independently from each other represented by a secondary amine The aqueous dispersion is suitable as reactive binder chemistry in coatings and inks.

Provided is an oil-based inkjet ink containing a pigment and a fatty acid ester-based solvent represented by general formula (1) shown below and having at least 18 but not more than 29 carbon atoms per molecule. In general formula (1), R.sup.1 represents an alkyl group of 5 or more carbon atoms, R.sup.2 represents an alkyl group of 6 or more carbon atoms, and at least one of R.sup.1 and R.sup.2 is a branched alkyl group of 9 or more carbon atoms having a side chain of 4 or more carbon atoms. ##STR00001##

Provided is an oil-based inkjet ink containing a pigment and a fatty acid ester-based solvent represented by general formula (1) shown below and having at least 18 but not more than 29 carbon atoms per molecule. In general formula (1), R.sup.1 represents an alkyl group of 5 or more carbon atoms, R.sup.2 represents an alkyl group of 6 or more carbon atoms, and at least one of R.sup.1 and R.sup.2 is a branched alkyl group of 9 or more carbon atoms having a side chain of 4 or more carbon atoms. ##STR00001##

An ink composition contains a semi-drying solvent; a pigment; an alkyd resin; and an amine-based polymeric dispersant. The composition contains 5 wt% or more of the alkyd resin, based on the total weight of the composition, and 5 wt% or more of the amine-based polymeric dispersant, based on the total weight of the composition.

An ink composition contains a semi-drying solvent; a pigment; an alkyd resin; and an amine-based polymeric dispersant. The composition contains 5 wt% or more of the alkyd resin, based on the total weight of the composition, and 5 wt% or more of the amine-based polymeric dispersant, based on the total weight of the composition.

An ink composition including water, a pigment, a pigment dispersion polymer A, and a water-soluble polymer B different from the pigment dispersion polymer A, in which the water-soluble polymer B contains a specific acid group and a constitutional unit represented by Formula (1), an ink set, and an image recording method. R.sup.1, R.sup.11, Y.sup.1, and Y.sup.2 each independently represent a hydrogen atom or a monovalent substituent, and L.sup.1 and L.sup.2 each independently represent a divalent linking group or a single bond. Y.sup.1 and Y.sup.2 may be bonded to each other to form a nitrogen-containing heterocycle with L.sup.1, L.sup.2, and N.

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An ink jet ink composition includes: an acetoacetanilide-based monoazo pigment coated with a water-insoluble polymer; 1-(2-hydroxyethyl)-2-pyrrolidone; and water.

An ink jet ink composition includes: an acetoacetanilide-based monoazo pigment coated with a water-insoluble polymer; 1-(2-hydroxyethyl)-2-pyrrolidone; and water.

There are provided a dispersion composition containing: (A) from 85 to 99.89% by weight of a dispersant (except for the following (B) and (C)); (B) from 0.01 to 5% by weight of an acetylene glycol and/or an acetylene glycol ethoxylate; and (C) from 0.1 to 10% by weight of one or two or more types selected from polyoxy (ethylene-propylene) block polymers having a weight average molecular weight of from 1,500 to 20,000, a content of ethylene oxide of from 20 to 90% by weight, and a content of propylene oxide of from 10 to 80% by weight: a dispersion and an ink composition using the same, and a method of producing the same.

An object of the present invention is to provide a method for producing a pigment composition that can achieve both a reduction in the number of coarse particles that may be contained in the pigment composition and improvement in the production efficiency of the pigment composition. The present invention relates to a method for producing a pigment composition in which a pigment is dispersed in a liquid medium by a pigment dispersion resin by undergoing step 1 in which a raw material composition containing the pigment, the pigment dispersion resin, and the liquid medium is processed with a dispersing machine, the dispersing machine being a dispersing machine including a configuration allowing the raw material compositions to collide with each other.