There is provided an ink composition including: a predetermined dye (C-1); a dye (C-2) containing at least one of C.I. Direct Blues 86 and 199; an alkylene oxide adduct of an acetylene glycol having a main chain of 12 or more carbon atoms; an acetylene glycol having a main chain of 10 or more carbon atoms; and a polyoxyalkylene alkyl ether, in which the content ratio A of the dye (C-1) and the dye (C-2) (the dye (C-1):the dye (C-2)) is 7:3 to 9.5:0.5, and the content of the dye (C-1) is 2.0 mass % to 5.0 mass %.

A phthalocyanine compound which is suitable for forming a color filter used for a liquid crystal display device, a method for synthesis the phthalocyanine compound, a composition containing a resin and the phthalocyanine compound, an article having a polymer layer formed from the composition and a color filter formed from the composition are developed.

In an example of a method for forming three-dimensional (3D) printed electronics, a build material is applied. A fusing agent is selectively applied on at least a portion of the build material. The build material is exposed to radiation and the portion of the build material in contact with the fusing agent fuses to form a layer. An electronic agent is selectively applied on at least a portion of the layer, which imparts an electronic property to the at least the portion of the layer.

In an example of a method for forming three-dimensional (3D) printed electronics, a build material is applied. A fusing agent is selectively applied on at least a portion of the build material. The build material is exposed to radiation and the portion of the build material in contact with the fusing agent fuses to form a layer. An electronic agent is selectively applied on at least a portion of the layer, which imparts an electronic property to the at least the portion of the layer.

A composition contains a phthalocyanine derivative represented by the following formula: ##STR00001##
where R.sub.1 to R.sub.8 are independently an alkyl group, M is Si, each of R.sub.9 and R.sub.10 is any one of substituents represented by the following formulas, R.sub.11 to R.sub.13 are independently an alkyl group, and R.sub.14 to R.sub.18 are independently an alkyl group or an aryl group: ##STR00002##

The present invention relates to naphthalocyanine and phthalocyanine chromophores of formula (I), their use as almost colourless IR absorbers, for optical filter applications, especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications.

##STR00001##

The present invention relates to naphthalocyanine and phthalocyanine chromophores of formula (I), their use as almost colourless IR absorbers, for optical filter applications, especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications.

##STR00001##

A composition contains a phthalocyanine derivative represented by the following formula:

##STR00001##

where R.sub.1 to R.sub.8 are independently an alkyl group, M is Si, each of R.sub.9 and R.sub.10 is any one of substituents represented by the following formulas, R.sub.11 to R.sub.13 are independently an alkyl group, and R.sub.14 to R.sub.18 are independently an alkyl group or an aryl group:

##STR00002##

The present application relates to a phthalocyanine, to a method for preparing the phthalocyanine, and to an object coated or impregnated with the phthalocyanine. The present application also relates to a method for providing reactive oxygen species, and to a method for disinfecting materials, including providing reactive oxygen species to the material to disinfect the material by oxidative action.

The present application can provide a phthalonitrile compound and a use thereof. The phthalonitrile compound has a novel structure, and can exhibit an excellent effect in a use to which the phthalonitrile compound can be applied. An example of the use of the phthalonitrile compound may be a raw material or precursor for, so-called, a phthalonitrile resin, a phthalocyanine dye, a fluorescent whitening agent, a photographic sensitizer, an acid anhydride, or the like.