山田化学工業 List of Products and Services

"Functional pigments" are pigment materials that not only provide coloring through selective absorption of visible light like traditional dyes and organic pigments but also bring about material changes due to external energy such as light, heat, electric fields, and pressure. These pigments are widely used in fields such as electronic information display devices, energy conversion materials, and recording materials due to their characteristics. Yamada Chemical Industries Co., Ltd. offers a wide range of materials to meet various needs. [Features] - Light selective absorption properties, photoconductivity, dichroism - Fluorescent properties, chromic properties - Nonlinear optical properties, photoelectric conversion properties, etc. For more details, please contact us or download the catalog.

• Chemicals

"Light-emitting materials" are materials that absorb light energy and then release that energy as light after being excited. Until now, they have been used in fluorescent whitening agents and fluorescent markers, but in recent years, their applications have expanded into the energy and electronics fields, leveraging their unique characteristics. The light-emitting materials developed by Yamada Chemical Industry Co., Ltd. demonstrate high quantum yield not only in solution but also in solid state. Furthermore, they are excellent in solubility in various solvents, making them suitable for processing through coating. [Features] - A lineup of materials with light-emitting spectra across RGB wavelength ranges - Devices capable of emitting a variety of colors, including white - High fluorescence quantum yield and high-brightness emission - High solubility in environmentally friendly organic solvents such as MEK and butyl acetate, enabling ink formulation → Applications in lighting equipment and other areas are anticipated. For more details, please contact us or download the catalog.

• Chemicals

At Yamada Chemical Industries Co., Ltd., we offer a wide range of materials that selectively absorb specific light in the near-infrared region. In addition to high light resistance and high heat resistance, we have achieved high solubility in various solvents. Utilizing these features, we can process not only through coating but also by blending into resins. We can also achieve high transparency with a high transmittance in the visible region. Leveraging the selective absorption properties, our materials are gaining attention for new applications such as heat-shielding materials and anti-counterfeiting inks. We provide materials tailored to various needs, including high durability (light resistance, heat resistance), high transmittance, and high solubility. 【Features】 ○ FDN Series: Absorbing dyes for 750-1000nm → We offer a variety of functional phthalocyanines (naphthalocyanines) that function as near-infrared absorbing dyes. → In addition to high light resistance and heat resistance, molecular design has made them easier to dissolve in various solvents. For more details, please contact us or download the catalog.

• Chemicals

At Yamada Chemical Industry Co., Ltd., we offer a wide range of pigments that selectively absorb specific light in the visible to near-infrared regions. Utilizing the selective absorption characteristics, these pigments can be applied to various uses such as display devices, functional lenses, and thermal shielding materials. We provide materials tailored to various needs, including high durability (light resistance, heat resistance), high transmittance, and high solubility. 【Features】 ○ FDB Series: 400-500nm Absorbing Pigments → High color separation is achieved by cutting unwanted wavelength light. → Usable for high contrast applications in color displays and blue light cut applications for LED light sources. ○ FDG, FDR Series: 500-750nm Absorbing Pigments → Can be used for various filter applications. → FDR-002, 003, and 005 excel in solubility in various solvents and heat resistance, making them promising for multiple applications. For more details, please contact us or download the catalog.

• Chemicals

Photochromism is a phenomenon in which a single chemical species changes its molecular structure without altering its molecular weight due to the action of light, resulting in the reversible generation of two different isomers. Since the two isomers are molecules with different properties, it is expected that various applications can be developed by reversibly changing molecular physical properties such as absorption spectra and refractive index through light. Photochromic materials can be broadly classified into two types: "T-type" and "P-type," based on thermal stability. We offer a wide range of materials to meet various needs. 【Features】 ○ T-type → Materials that undergo transformation through heat as well as light → Representative examples include azobenzene and spiropyran ○ P-type → Materials in which both isomerization processes occur only under light irradiation and do not change with heat → Representative examples include diarylethene and fulgide For more details, please contact us or download the catalog.

• Chemicals