An ink set for inkjet recording, comprising a first aqueous ink comprising a colorant stabilized by cationic dispersing groups and a capsule composed of a polymeric shell surrounding a core; the core comprising one or more chemical reactants capable of forming a reaction product upon application of heat and/or light and the capsule is stabilized by cationic dispersing groups; a second aqueous ink comprises a colorant stabilized by anionic dispersing groups and a capsule composed of a polymeric shell surrounding a core; the core comprising one or more chemical reactants capable of forming a reaction product upon application of heat and/or light and the capsule is stabilized by anionic dispersing groups.

The present invention relates to a stabilized phycocyanin composition comprising a complexing agent and an encapsulating agent as stabilizer. The present invention further relates to a method for preparing the composition and the use of the composition for coloring particularly food products.

Provided are a coloring composition including a colorant including a green pigment, a compound A, and a resin, in an which amount of the green pigment dissolved in 100 g of propylene glycol methyl ether acetate at 25° C. is less than 0.01 g, an amount of the compound A dissolved in 100 g of propylene glycol methyl ether acetate at 25° C. is 0.01 g or more, the coloring composition includes 0.1 to 10 parts by mass of the compound A with respect to 100 parts by mass of the green pigment, and the green pigment and the compound A satisfy a relationship of “−1.0 eV≤LUMO.sub.B−LUMO.sub.A≤1.0 eV”; a film; a color filter; a solid-state imaging element; and an image display device. LUMO.sub.B is an energy level of a lowest unoccupied molecular orbital of the green pigment, and LUMO.sub.A is an energy level of a lowest unoccupied molecular orbital of the compound A.

There are provided a paste-like composition for pressure measurement, including a microcapsule that encompasses an electron-donating dye precursor and an electron-accepting compound that causes the electron-donating dye precursor to develop a color, and a pressure measurement method using the paste-like composition for pressure measurement.

There are provided: a microcapsule that includes a shell part containing a polymer and a core part which is encapsulated in the shell part, where the core part contains a coloring material and the polymer has an ultraviolet absorbent skeleton in the main chain thereof; and an application of the microcapsule.

The present invention relates to microparticle compositions comprising an organic IR absorbing pigment having a main absorption maximum in the range from 750 to 1100 nm. The invention also relates to a process for producing said microparticle compositions and to their use in a printing ink, in particular in a printing ink, which is suitable for producing a security feature or a security document. The microparticles of the pigment composition contain the organic IR absorbing pigment as solid particles, which are surrounded by or embedded in an aminoplast polymer, which is a polycondensation product of one or more amino compounds and one or more aldehydes. The microparticle based pigment composition is characterized by a volume based particle size distribution, as determined by static light scattering according to ISO 13320:2009 EN, having a D(4,3) value in the range from 1.0 to 15.0 μm.

A core-shell compound, a photosensitive resin composition including the same, a photosensitive resin layer manufactured using the photosensitive resin composition, a color filter including the photosensitive resin layer, and a CMOS image sensor including the color filter, the core-shell compound including a squarylium core including three or more (meth)acrylate groups and a shell surrounding the squarylium core.

The present invention relates to an optical filter including an absorption layer containing a near-infrared absorbing dye and a resin, in which the near-infrared absorbing dye contains a squarylium dye having a maximum absorption wavelength in 650 to 780 nm and a thermal decomposition temperature of 265° C. or higher and satisfying IR20−IR80<65 nm, and the resin has a glass transition temperature of 390° C. or higher.

[Problems] Provided are a highly marketable reversibly thermochromic composition that provides a black color during color development by using a fluoran derivative having a specific structure as an electron-donating color-developing organic compound, turns colorless during decoloration, and is excellent in contrast between a colored state and a decolored state and a microcapsule pigment encapsulating the same.

[Solution] Disclosed are a reversibly thermochromic composition including: (a) a fluoran derivative having a specific structure as an electron-donating color-developing organic compound; (b) an electron-accepting compound; and (c) a reaction medium which reversibly induces an electron transfer reaction between the component (a) and the component (b) in a specific temperature range, and a reversibly thermochromic microcapsule pigment encapsulating the same.

A device for indicating exposure to a pressure. The device may include a base layer, a plurality of microcapsules, and a coating, with the microcapsules being disposed between the base layer and the coating. The microcapsules contain a indicator material that can be released once the microcapsules burst. The microcapsules then have a compressive bursting strength that is chosen or designed to be less than a selected pressure (e.g., the pressure being that to which a particular article may be exposed during high pressure processing). Thus, when the device is subjected to a pressure greater than the compressive bursting strength, at least some microcapsules burst, the indicator material is released from the microcapsules, and the release of the indicator material can be detected by observation of the device. The device may be a label that is associated (such as by being affixed) to the article being subjected to pressure (or multiple labels being associated (such as by being affixed) to multiple articles. Alternatively, the device may be associated with an article or articles without being affixed thereto.