Abstract: A composite pigment of a bluish green color comprises copper phthalocyanine and aluminum phthalocyanine which are preferably in the form of a mixture or solid solution. The composite pigment can be produced by mixing copper phthalocyanine and aluminum phthalocyanine into a mixture and then converting said mixture into a pigment form. A coloring composition comprises at least a resin and a pigment which comprises copper phthalocyanine and aluminum phthalocyanine. The coloring composition can be produced by mixing copper phthalocyanine and aluminum phthalocyanine which have been independently comminuted, into a composite pigment, and then kneading the pigment and a resin such that the pigment is dispersed in the resin. An image recording substance is produced using the coloring composition.

Abstract: The present invention is directed to methods of making subphthalocyanine compounds. The methods of the present invention may be used to produce known subphthalocyanine compounds, as well as, a new family of subphthalocyanine compounds. The methods of the present invention may employ environmentally-friendly solvents, which donate a hydrogen atom for use in the reaction mechanism. The methods of the present invention produce subphthalocyanine compounds at a yield of greater than about 50%, and even greater than about 94%. The present invention is further directed to subphthalocyanine compounds having improved lightfastness. The subphthalocyanine compounds may have a Subphth-Lightfastness Test Value of less than 15%.

Abstract: The present invention relates to a family of new porphine compounds for use as colorants and/or colorant stabilizers. The new porphine compounds may be used alone as a magenta dye or may be used in combination with one or more colorants to provide light stability to colorants. The present invention further relates to inks containing the new porphine compounds and a method for making the new compounds. The present invention also relates to improved methods of making Cu-meso-tetra-(2-sulfanatophenyl)-porphine (designated o-CuTPPS4). The improved processes allow the production of o-CuTPPS4 at lower cost and higher yields compared to conventional methods of making o-CuTPPS4. The present invention further relates to the use of o-CuTPPS4 as a colorant stabilizer for a variety of colorants, especially magenta colorants.

Abstract: An ink formulation particularly suitable for inkjet printing comprising a pigment, polypropylene glycol and water. In a preferred embodiment, the ink composition comprises 0.5 to 15% by weight of a pigment, 0.5 to 30% by weight of polypropylene glycol, and 55 to 99% by weight of water, wherein the percentages are based on the overall weight of the formulation. In another preferred embodiment, the ink composition comprises a pigment, polypropylene glycol, and water, wherein the minimum ratio of pigment to polypropylene glycol is about 1:1 to about 1:2.5. The ink composition of the present invention produces a surprisingly wet fast and light fast printed image.

Abstract: This consists in an ink composition containing: a coloring agent, 2-pyrrolidone, a specific surfactant, a butyl ether-based solvent, water, and a water-soluble organic solvent. With the present invention, it is possible to provide an ink composition with which clogging cannot occur, which is of excellent discharge stability, and which affords excellent printing quality by preventing blurring.

Abstract: Phthalocyanine compounds of Formula (1) have utility as colorants in inks for ink-jet printing, where Formula (1) represents: which comprises any form of the compound: such as salt; stereoisomer, zwitterion, polymorph, complex, isotopic form, combinations thereof in the same species and mixtures thereof; where: M represents H, metal, halometal, oxymetal and/or hydroxymetal; k is the inverse of half of the valency of M; Pc represents a phthalocyanine nucleus of Formula (2): L represents a linking group comprising an optionally substituted C1-30carbyl; A represents —O—, —S— or —NR3—, where R3 independently comprises H or optionally substituted C1-30carbyl; R1 comprises at least one group independently selected from: an optional substituent and optionally substituted C1-15carbyl; R2 comprises optionally substituted C1-30carbyl that comprises at least one alkyl group substituted by at least one of: hydroxy, carboxy and sulpho; z repres

Abstract: The present invention relates to a family of new porphine compounds for use as colorants and/or colorant stabilizers. The new porphine compounds may be used alone or may be used in combination with one or more colorants to provide light stability to colorants. The present invention further relates to inks containing the new porphine compounds and a method for making the new compounds. The present invention also relates to improved methods of making porphines. The improved processes allow the production of porphines at lower cost and higher yields compared to conventional methods of making porphines.

Abstract: A water based ink composition is disclosed. A precursor, which can be converted to an insoluble pigment employing at least one of a chemical means, a thermal means, a photodecomposition means, and a radiation means, is dissolved in a water based solvent in the ink.

Abstract: Disclosed is a yellow monoazo pigment which is obtained by diazotization of anthranilic acid, coupling of the diazonium compound with 1-(3′-sulfophenyl)-3-methyl-5-pyrazolone and subsequent laking of the coupling product to a strontium salt. The pigment is characterized by the formula: The new pigment has excellent heat stability and bleed fastness and very high color strength. It is suitable for pigmenting of plastics, inks and coatings, and particularly suitable for pigmenting of plastics.

Abstract: A yellow ink composition for ink jet recording is provided which possesses excellent lightfastness and in addition can retain excellent color development for a long period of time. The yellow ink composition comprises both C.I. Pigment Yellow 74 and at least one second yellow pigment selected from the group consisting of C.I. Pigment Yellow 109, 110, 128, 150, and 154.

Abstract: Ink compositions containing ultraviolet absorbing compounds of formula I wherein R1, R2 and R3 are defined herein, and wherein the compound contains one or two —SO3M groups, one —SO3M and one —CO2M group, or two —CO2M groups. Ink jet ink compositions containing ultraviolet absorbing compounds of formula IV wherein R2, R3, R4, R5 and R6 are defined herein, and wherein the compound contains one or two —SO3M groups, one —SO3M and one —CO2M group or two —CO2M groups, with the provision that either (1) R2 and R3 are not both hydrogen, or (2) R5 is not hydrogen. The ink compositions are adapted for ink jet printing.

Abstract: Suitable phthalocyanine compounds of Formula (1) have utility as colorants in inks for ink-jet printing, where Formula (1) represents: which comprises any form of the compound: such as salt; stereoisomer, zwitterion, polymorph, complex, isotopic form, combinations thereof in the same species and mixtures thereof; where: M represents a metal or H; Pc represents a phthalocyanine nucleus of Formula (2): L represents a linking group comprising an optionally substituted C1-30hydrocarbyl; A represents a group comprising at least one of: amino and optionally substituted C1-30hydrocarbyl comprising at least one protonable nitrogen atom; but where A comprises other than an alkyl group substituted by at least one of: hydroxy, carboxy and sulpho; R1 represents a group independently comprising at least one of: an optional substituent and optionally substituted C1-5hydrocarbyl; z represents an integer from 0 to 4; w represents an integer from 1 to 5; and the sum of w+z is from

Abstract: In one embodiment, the present invention relates to a method of preparing a medium shade yellow pigment composition comprising making an azo pigment by coupling (i) two or more diazonium components made from two or more aromatic amines including 2-amino-5-chloro-4-ethylbenzene-1-sulfonic acid and 2-amino-4-chloro-5-methylbenzene-1-sulfonic acid with (ii) at least 1-(3′-sulfophenyl)-3-methyl-5-pyrazolone, and metallizing the azo pigment with a divalent metal to provide the medium shade yellow pigment composition. The medium shade yellow pigment composition is suitable for use in plastics, paints and inks.

Abstract: A method of forming a printing ink, the method including combining a nitrogen-containing cyclic organic compound, a glycol ether or a glycol ether acetate, and a colorant; and homogeneously blending the nitrogen-containing cyclic organic compound, the glycol ether or the glycol ether acetate, and the colorant to form the ink jet printing ink.

Abstract: Disclosed is an ink composition which comprises (a) water, (b) a colorant; and (c) an additive selected from the group consisting of diamido quaternary dialkyl ammonium salts, bitail quaternary tetraalkyl ammonium salts, bitail imidazolium salts, bitail biomimetic phospholipid salts, specific bisquaternary salts, &bgr;-hydroxyethyl ethylene diamine fatty acids, specific polyammonium salts, ethoxylated polyamine compounds, biquaternary pyridinium salts, aminofunctional polyorganosiloxanes, and mixtures thereof.

Abstract: An ink jet printer is disclosed, which jets a water-soluble ink from a recording head comprising at least an ink passage-forming member and an orifice through the orifice to form flying droplets which form a dot image on a recording medium, wherein at least a portion of the ink passage-forming member is composed of borosilicate glass and the water-soluble ink comprises at least one of urea and thiourea. Further, an ink for use in the ink jet printer is also disclosed.

Abstract: An ink composition comprises red pigment and a carrier mixture. The carrier mixture comprises a bishydroxy terminated thioether and a lactam.

Abstract: The present invention is directed to compositions containing a colorant and at least one porphine. The present invention includes an ink set of one or more inks which have substantially identical light fastness properties. One or more of the inks of the ink set includes a colorant and at least one porphine. The porphine imparts light-stability to the colorant so that the colorant does not fade when exposed to electromagnetic radiation such as sunlight or artificial light. The ink set provides a range of colored inks having similar light-stability.

Abstract: According to the present invention, a resin is added to crude copper phthalocyanine comprising an &agr;-form and a &bgr;-form crystals in combination and dry-milling is performed in a deoxygenated atmosphere, to provide copper phthalocyanine pigment composition of superior quality which reduces considerable expenditure of time and labor associated with the pigmentation process of crude copper phthalocyanine and the printing ink production process of a pigment, and printing ink comprising &bgr;-form copper phthalocyanine pigment superior quality.