The present invention relates to oxocarbon-, pseudooxocarbon- and radialene compounds as well as to their use as doping agent for doping an organic semiconductive matrix material, as blocker material, as charge injection layer, as electrode material as well as organic semiconductor, as well as electronic components and organic semiconductive materials using them.

A light-absorbing, neutral density filter for an electronic device display. More specifically, a light-absorbing, neutral density filter applied as a shield, protective film, or protective coating layer for an electronic device display that blocks ultraviolet light, high energy visible light, and at least a portion of blue light. The neutral density filter comprises a polymer substrate and an absorbing agent.

Provided is a coloring composition capable of producing a cured film having suppressed color unevenness even in a case where the coloring composition is used after being stored for a long period of time. In addition, provided are a color filter, a pattern forming method, a solid-state imaging device, and an image display device. The coloring composition includes a halogenated zinc phthalocyanine pigment, a maleimide compound, a curable compound other than the maleimide compound, and a solvent, in which the molecular weight of the maleimide compound is 100 to 400, and the content of the maleimide compound is 0.08 to 0.8 parts by mass with respect to 100 parts by mass of the halogenated zinc phthalocyanine pigment.

Provided is a coloring composition capable of producing a cured film having suppressed color unevenness even in a case where the coloring composition is used after being stored for a long period of time. In addition, provided are a color filter, a pattern forming method, a solid-state imaging device, and an image display device. The coloring composition includes a halogenated zinc phthalocyanine pigment, a maleimide compound, a curable compound other than the maleimide compound, and a solvent, in which the molecular weight of the maleimide compound is 100 to 400, and the content of the maleimide compound is 0.08 to 0.8 parts by mass with respect to 100 parts by mass of the halogenated zinc phthalocyanine pigment.

An optical material of the present invention has a minimum transmittance value in a wavelength range of 445 nm to 470 nm of a transmittance curve measured at a thickness of 2 mm of the optical material.

An optical material of the present invention has a minimum transmittance value in a wavelength range of 445 nm to 470 nm of a transmittance curve measured at a thickness of 2 mm of the optical material.

A technical problem of the present invention is to provide a condensed polycyclic organic pigment having excellent dispersion properties and dispersion stability. More specifically, the technical problem of the present invention is to provide a condensed polycyclic organic pigment in which a practically sufficient viscosity is achieved in terms of both the initial viscosity of a base ink and the viscosity over time of a base ink when used in the printing ink application. As a result of thorough studies on the surface state of organic pigment particles and interaction among components constituting a printing ink, it has been found that the technical problem can be solved by using a polyvalent metal inorganic salt in a condensed polycyclic organic pigment, thus accomplishing the present invention.

A technical problem of the present invention is to provide a condensed polycyclic organic pigment having excellent dispersion properties and dispersion stability. More specifically, the technical problem of the present invention is to provide a condensed polycyclic organic pigment in which a practically sufficient viscosity is achieved in terms of both the initial viscosity of a base ink and the viscosity over time of a base ink when used in the printing ink application. As a result of thorough studies on the surface state of organic pigment particles and interaction among components constituting a printing ink, it has been found that the technical problem can be solved by using a polyvalent metal inorganic salt in a condensed polycyclic organic pigment, thus accomplishing the present invention.

In a 3D printing method, a coalescent dispersion for forming a 3D object is selected. The dispersion includes an aqueous vehicle and an infrared or near-infrared binding agent dissolved or dispersed therein. The binding agent is a phthalocyanine having a polar group attached to each side chain or a naphthalocyanine having a polar group attached to each side chain. A sinterable material is deposited and heated to a temperature ranging from about 50 C to about 350 C. The dispersion is selectively applied on at least a portion of the sinterable material. The sinterable material and the dispersion applied thereon are exposed to infrared or near-infrared radiation. The binding agent absorbs the radiation and converts it to thermal energy. At least the portion of the sinterable material in contact with the binding agent is at least cured to form a first layer of the 3D object.

The present invention relates to oxocarbon-, pseudooxocarbon- and radialene compounds as well as to their use as doping agent for doping an organic semiconductive matrix material, as blocker material, as charge injection layer, as electrode material as well as organic semiconductor, as well as electronic components and organic semiconductive materials using them.