Abstract: In light of diversification of required properties, the present disclosure seeks to improve glitter pigments from a viewpoint different from the intensity and vividness of color. The present disclosure provides a glitter pigment including: a flaky substrate; and a coating including zirconium oxide on the flaky substrate, wherein a mean deviation of mean friction coefficient (MMD) of the glitter pigment is 1.5 or less. The present disclosure also provides a glitter pigment including: a flaky substrate; and a coating including zirconium oxide on the flaky substrate, wherein a specific surface area of the glitter pigment is 0.5 cm2/g or more.

Abstract: The present invention provides a glitter pigment suitable for imparting high brightness to reflected light toward a regular reflection direction and reducing unnaturalness caused by an observation angle-dependent variation in reflected light. The glitter pigment according to the present invention includes: a flaky substrate; an optical interference film formed on a surface of the flaky substrate; and fine light scattering particles attached to the optical interference film, wherein reflected light is represented by an L*(15) value of more than 100, a ?L*(h?s) value of less than 30, and a ?h(h?s) value of less than 40° in an L*C*h color system. The L*(15) value is an L* value of the reflected light toward a 15° direction based on an angular representation in which, when an illuminant is disposed so that an incident angle is 45°, an angle at which light is regularly reflected is defined as 0° and a light incident direction is defined as positive.

Abstract: A new material efficiently attenuating transmission of near-infrared light is provided. A provided near-infrared-shielding material includes a plurality of flaky particles, wherein each of the plurality of flaky particles includes a flaky substrate and a single-layer film formed on a principal surface of the flaky substrate, and the near-infrared-shielding material has a light reflectance of 40% or more between wavelengths of 800 nm and 1400 nm. The flaky substrate is, for example, a glass flake. The glass flake has an average thickness of, for example, 0.6 pm or less. The single-layer film includes, for example, titanium oxide and has an average thickness of, for example, 80 nm to 165 nm.

Abstract: The present invention provides a glitter pigment, including: a glass flake; a titanium oxide layer formed over the glass flake; and fine gold particles deposited on the titanium oxide layer, wherein the fine gold particles include fine gold particles P2 having a particle diameter of 20 nm or more and less than 50 nm, and in a square region 2 ?m on a side on a surface of the titanium oxide layer on which the fine gold particles are deposited, the number of the fine gold particles P2 is 9 or more and less than 100 and an average of distances between the fine gold particles P2 is 130 nm or more and less than 500 nm, each of the distances being a distance from one of the fine gold particles P2 to another fine gold particle P2 nearest to the one.

Abstract: A colorant-containing solid material (1) of the present invention includes a colorant (10) and a matrix (20). The matrix (20) is formed of a silica and a polysilsesquioxane and covers the colorant (10). An absorption intensity derived from a hydrocarbon group that is not directly bonded to a silicon atom, an absorption intensity derived from a bond between a silicon atom and a non-reactive functional group, and an absorption intensity derived from a bond between a silicon atom and a hydroxy group, determined by an infrared spectroscopic analysis based on a KBr pellet method using a Fourier transform infrared spectrophotometer, are denoted as Ia, Ib and Ic, respectively. The colorant-containing solid material (1) satisfies at least one of conditions Ib/Ia?1.1 and Ib/Ic?0.6.

Abstract: A colorant-containing solid material (1) of the present invention includes a colorant (10) and a matrix (20). The matrix (20) is formed of a silica and a polysilsesquioxane and covers the colorant (10). An absorption intensity derived from a hydrocarbon group that is not directly bonded to a silicon atom, an absorption intensity derived from a bond between a silicon atom and a non-reactive functional group, and an absorption intensity derived from a bond between a silicon atom and a hydroxy group, determined by an infrared spectroscopic analysis based on a KBr pellet method using a Fourier transform infrared spectrophotometer, are denoted as Ia, Ib and Ic, respectively. The colorant-containing solid material (1) satisfies at least one of conditions Ib/Ia?1.1 and Ib/Ic?0.6.

Abstract: The present invention provides a glitter pigment, including: a glass flake; a titanium oxide layer formed over the glass flake; and fine gold particles deposited on the titanium oxide layer, wherein the fine gold particles include fine gold particles P2 having a particle diameter of 20 nm or more and less than 50 nm, and in a square region 2 ?m on a side on a surface of the titanium oxide layer on which the fine gold particles are deposited, the number of the fine gold particles P2 is 9 or more and less than 100 and an average of distances between the fine gold particles P2 is 130 nm or more and less than 500 nm, each of the distances being a distance from one of the fine gold particles P2 to another fine gold particle P2 nearest to the one.

Abstract: The present invention provides a glitter pigment suitable for imparting high brightness to reflected light toward a regular reflection direction and reducing unnaturalness caused by an observation angle-dependent variation in reflected light. The glitter pigment according to the present invention includes: a flaky substrate; an optical interference film formed on a surface of the flaky substrate; and fine light scattering particles attached to the optical interference film, wherein reflected light is represented by an L*(15) value of more than 100, a ?L*(h?s) value of less than 30, and a ?h(h?s) value of less than 40° in an L*C*h color system. The L*(15) value is an L* value of the reflected light toward a 15° direction based on an angular representation in which, when an illuminant is disposed so that an incident angle is 45°, an angle at which light is regularly reflected is defined as 0° and a light incident direction is defined as positive.

Abstract: A bright pigment according to the present invention includes: a glass flake; a titanium oxide layer formed over the glass flake; and fine gold particles deposited on the titanium oxide layer or placed between the glass flake and the titanium oxide layer. The titanium oxide layer has a thickness of 150 nm or more, and a reflected color of the bright pigment is a blue to green color represented by a C* value of 15 or more and a h value of 150 to 300 in a L*C*h color system.

Abstract: A bright pigment according to the present invention includes: a glass flake; a titanium oxide layer formed over the glass flake; and fine gold particles deposited on the titanium oxide layer or placed between the glass flake and the titanium oxide layer. The titanium oxide layer has a thickness of 150 nm or more, and a reflected color of the bright pigment is a blue to green color represented by a C* value of 15 or more and a h value of 150 to 300 in a L*C*h color system.

Abstract: The noble metal colloidal particles of the present invention are noble metal colloidal particles each including: a Pd colloidal particle; and Pt supported on the surface of the Pd colloidal particle. The noble metal colloidal particles are substantially free from a protective colloid. The Pd colloidal particles have an average particle diameter of 7 to 20 nm. The amount of the Pt supported on the surface of the Pd colloidal particle is 0.05 to 0.65 atomic layer thick, when the amount is expressed as the number of atomic layers of the Pt. The noble metal colloidal solution of the present invention can be obtained by dispersing these noble metal colloidal particles of the present invention in a solvent.

Abstract: The noble metal colloidal particles of the present invention are noble metal colloidal particles each including: a Pd colloidal particle; and Pt supported on the surface of the Pd colloidal particle. The noble metal colloidal particles are substantially free from a protective colloid. The Pd colloidal particles have an average particle diameter of 7 to 20 nm. The amount of the Pt supported on the surface of the Pd colloidal particle is 0.5 to 2 atomic layers thick, when the amount is expressed as the number of atomic layers of the Pt. The noble metal colloidal solution of the present invention can be obtained by dispersing these noble metal colloidal particles of the present invention in a solvent.