根上工業 List of Products and Services

This product line consists of bifunctional urethane acrylates with properties such as moisture and heat resistance, heat resistance, chemical resistance, and high insulation. It is particularly suitable as a base resin for UV-curable adhesives and coatings for electronic materials. - We offer three types: polycarbonate-based, hydrogenated polybutadiene-based, and aromatic-based. - All of them form flexible and tough films with rubber elasticity after UV curing. - The polycarbonate-based type has particularly high heat resistance and high moisture and heat resistance. - The hydrogenated polybutadiene-based type has particularly low water absorption and high insulation properties. - The aromatic-based type has particularly high chemical resistance. It is supplied in liquid form. Please download the catalog for more details. We also offer free samples, web seminars, and product customization. Feel free to contact us.

• plastic

This product is a di-functional urethane methacrylate with a methacrylate base. It is suitable as a base resin for thermosetting adhesives, anaerobic adhesives, and sealing/casting agents. - Due to its milder reactivity compared to acrylate bases, it has low exotherm, anaerobic curing properties, and low curing shrinkage. It is also characterized by high heat resistance and low toxicity due to its high Tg. - It has a structure that combines hydrolysis resistance from the ether backbone and toughness from the aromatic component. - It uses plant-derived raw materials, making it possible to consider environmentally friendly product development. It is supplied in liquid form. Please download the catalog for more details. We also offer free samples, web seminars, and product customization. Feel free to contact us.

• plastic

This product is a reactive methacrylic polymer with functional groups, suitable for two-component curing type paints/inks as a main agent/hardener or for alkaline developing type resist materials. Manufactured using our strength of "water-based suspension polymerization," it has the following features: - Molecular weight control; Mw 10,000 to 1,000,000 - No use of emulsifiers or coagulants; low molecular weight components, residual monomers, and impurities are minimal - Polymer design; copolymerization of various acrylic monomers and introduction of various functional groups - Control of glass transition temperature It is supplied in bead form. Please download the catalog for more details. We also offer free samples, web seminars, and product customization. Feel free to contact us.

• Other polymer materials
• paint

A new grade of Hi-pearl(R) has been created. - High acid value - Low molecular weight - Narrow molecular weight distribution - Methacrylic resin - Customizable Acid value, molecular weight, introduction of other functional groups, monomer copolymerization - Free samples are available.

• plastic

- It has excellent dielectric properties. - It has a cross-linked structure, which provides excellent solvent resistance. - It can be micro-dispersed as primary particles. - Free samples are available. - We accept inquiries regarding customization such as changes in particle size. - We provide product explanations on our website and other platforms. Please feel free to contact us.

• plastic
• Other electronic parts

Two types are available: WEH-1 for hard coatings and WES-1 for flexible grades. A uniform coating film can be obtained from fine particle sizes. *For more details, please refer to the PDF document or feel free to contact us.*

• plastic

This is a material that microencapsulates latent heat storage substances in a resin shell. - Excellent handling properties; it won't leak even if the latent heat storage substance liquefies! - No aldehyde generation; it is encapsulated with non-melamine resin! - SDGs; it can utilize natural heat and waste heat, and the latent heat storage substance is derived from biomass. For more details, please refer to the PDF document or feel free to contact us. We have free samples available.

• Composite Materials

- It excels in the balance of chemical resistance, hardness, adhesion, and abrasion resistance. - It is provided as a polymer solution with 60% ethyl acetate. - Due to the presence of hydroxyl groups, it is suitable for two-component paint applications combined with isocyanates.

• plastic

It has excellent handling properties with low viscosity, exhibiting flexibility, high elongation, and high tanδ.

• plastic

- Tin-free, low-crystallinity ether-based urethane acrylate with 70% biomass content. - It excels in strength and elongation. - It is suitable as an oligomer for gaskets, sealing materials, and adhesive bonding.

• plastic

It is perfectly spherical and insoluble in water and solvents.

• plastic
• Composite Materials

Hi-pearl MA-4620 This is an acid-modified methacrylic resin synthesized by suspension polymerization. ART CURE MAP-7030 This is an acrylate acrylic resin that can be developed with alkaline processing. UV crosslinking is possible after development.

• plastic

This is a material that microencapsulates latent heat storage substances in a resin shell. - Excellent handling properties; it won't leak even if the latent heat storage substance liquefies! - No aldehyde generation; it is encapsulated with non-melamine resin! - SDGs; it can utilize waste heat, and the latent heat storage substance is derived from biomass. For more details, please refer to the PDF document or feel free to contact us. We have free samples available.

• plastic

This document provides an overview of radical polymerization. It includes detailed information on types of radical polymerization, such as "suspension polymerization" and "emulsion polymerization" in heterogeneous systems. You can also find a comparison of major radical polymerization methods. Please feel free to download and take a look. 【Contents (partial)】 ■ Types of radical polymerization ■ Heterogeneous system; suspension polymerization ■ Heterogeneous system; emulsion polymerization ■ Heterogeneous system; precipitation polymerization *For more details, please refer to the PDF document or feel free to contact us.

• others

- Types of Radical Polymerization - Heterogeneous Radical Polymerization - Suspension Polymerization - Emulsion Polymerization - Precipitation Polymerization - Homogeneous Radical Polymerization - Solution Polymerization - Bulk Polymerization

• plastic

It has excellent handling properties with low viscosity. It is suitable for optical adhesive bonding.

• plastic

The PARACRON SY series of acrylic polymers is a liquid product diluted with reactive monomers, consisting mainly of low Tg acrylic polymers made from acrylic acid esters. We have free samples available. Please feel free to contact us.

• plastic

We offer free samples and consultations for product customization. We also hold product briefings online. Please feel free to contact us.

• plastic

- The glass transition temperature is low at -38°C, and it has soft fine particles. - The decomposition starting temperature is high at 335°C, indicating good heat resistance.

• plastic

- It is a spherical cross-linked fine particle with excellent fluidity and slip properties. - It easily disperses in water and most organic solvents. - It has excellent heat resistance and solvent resistance.

• plastic

It complies with legal regulations in countries such as China, South Korea, Taiwan, and the United States, making overseas expansion possible.

• plastic

Lineup of acrylic-based polymers from Negami Industrial (1) PARACRON; low Tg flexible acrylic polymer (2) Hi-pearl; methacrylic resin (3) ART CURE; liquid acrylic polymer that can be cross-linked with UV and electron beams (4) ART PEARL; spherical cross-linked acrylic microparticles

• plastic

- It is a liquid acrylic polymer with acrylate groups that can be UV cross-linked. - It shows a high tanδ (greater than 1.0) in the room temperature range. - As an acrylic polymer, it has excellent adhesion to various substrates. - As an acrylic polymer, it has excellent heat resistance and weather resistance. - Being solvent-free, it does not require a drying process and can be applied in thick layers. - Grade name: ART CURE MAP-2801 - Free samples are available. 【Keywords】 - Acrylic acrylate - Acrylic resin acrylate

• plastic

The current lineup consists of four grades. Flexible, high elongation type: MBU-191 (biomass content 81%) Flexible type: MBU-071 (biomass content 68%) Rigid type: JHP-001 (biomass content 24%) Methacrylate type: STQI-037PR (biomass content 55%)

• plastic

- It has a perfect spherical shape with excellent fluidity and smoothness. - It easily disperses in water and most organic solvents. - We offer a range of particles from flexible and elastic to high-strength. - It has excellent heat resistance and solvent resistance. - The average particle size can be adjusted from 2 to 150 μm, with high reproducibility of particle size distribution.

• plastic

Porous microparticles; ART PEARL TE-812T Titanium oxide encapsulated microparticles; ART PEARL GPB-003TL

• plastic

- It is a multi-functional non-yellowing urethane acrylate. - The surface of the coating film is tack-free after solvent drying (before curing). - It has high hardness, excellent abrasion resistance, and low curing shrinkage. - A hard coat agent that is less prone to cracking can be produced.

• plastic

It has low oil absorption and excellent stain resistance.

• plastic

The acrylic polymer "PARACRON" is a heat-resistant, weather-resistant, flexible, and transparent polymer made from the polymerization of acrylic acid esters. The solvent-free acrylic polymer that improves the "brittleness" of epoxy resin is "PARACRON EG-26R." 【Features】 ■ Excellent compatibility with epoxy resins, capable of improving hard and brittle properties! ■ No emulsifiers or coagulants used, resulting in fewer impurities and contaminants! ■ Suitable for epoxy resin compositions for resist and adhesives! ■ Solvent-free with 100% solid content! We accept requests for free samples, consultations for material customization, and contract manufacturing. *For more details, please download the PDF or contact us directly.

• plastic

Hollow particles with internal space possess lightweight, thermal insulation, and light diffusion properties, and are applied in the fields of electronics and building materials. However, existing hollow particles made from rigid materials such as silica and acrylic resin have faced challenges of being hard and brittle. Negami Industries has utilized its unique polymerization method to apply highly tough and high-strength cross-linked urethane resin to the shell material, thereby improving handling properties while maintaining the unique characteristics of hollow particles.

• plastic

This is a material that provides a UV-curable polyurethane film with an elongation exceeding 1900%. Being a solvent-free type, it is also environmentally friendly. We have free samples available. Please feel free to contact us.

• plastic

It is a low molecular weight, trifunctional urethane acrylate.

• plastic

The hyperbranched polymer structure of the polymer achieves both high hardness (8H) and bend resistance. Please download the catalog to check the material properties. We offer free samples and product introductions on our website. Feel free to contact us. *Light radical generation is non-additive.

• plastic

This is a urethane acrylate suitable for high-frequency circuit board materials for next-generation communications such as the fifth-generation mobile communication system (5G). Since it contains an acryloyl group, it can be cross-linked with "electron beams," "ultraviolet (UV)," and "visible light," etc. *The light radical generator is a product of urethane acrylate without additives. We are currently offering free samples and product explanations on our website! Please feel free to contact us.

• plastic

【Emulsion Type】 - Hard coat urethane acrylate 【Solvent-free Type】 - A syrup diluted with acrylic monomer of low Tg type acrylic ester-based polymer Since it is a raw material resin, photoradical initiators are not added.

• Other polymer materials

- Acrylic Polymer PARACRON PR-4 (Tg=-52℃, Biomass content 68%) - Methacrylic Polymer Hi-pearl BSL-5200 (Tg=+136℃, Biomass content 35%, Ethyl acetate solution; Solid content 40wt%)

• Other polymer materials

This is a low Tg acrylic polymer synthesized by "aqueous suspension polymerization." Compared to emulsion polymerization or solution polymerization using surfactants, it has fewer low molecular weight components, impurities, and residual monomers, and it excels in metal corrosion resistance and water resistance. The product is mainly supplied in a dissolved state in a solvent. For more details, please download the catalog and check. We also offer free samples, web seminars, and product customization. Please feel free to contact us.

• Other polymer materials

This product is suitable for use as a binder in paints and inks, as well as ceramic binders. Since it is manufactured using our company's strength in "water-based suspension polymerization," it offers: - High molecular weight: Mw 10,000 to 1,000,000 - No use of emulsifiers or coagulants; low levels of low molecular weight components, residual monomers, and impurities - Polymer design; copolymerization of various acrylic monomers and introduction of various functional groups - Control of glass transition temperature It is supplied in bead form. For more details, please download the catalog. We also offer free samples, web seminars, and product customization. Feel free to contact us.

• Other polymer materials
• paint
• Fine Ceramics

This is a radical reaction-type urethane acrylate that crosslinks with "electron beams," "ultraviolet rays (UV)," and "visible light." Our urethane acrylates have a rich lineup! We offer a range from high molecular weight polymers to oligomers. Thanks to our strength in high molecular weight technology (Mw 50,000) and multifunctionalization technology with acryloyl groups ranging from 2 to 15, we provide products that achieve flexible hardness settings (from rubber-like to hard coat) and functionality (stretchability, bend resistance). Please note that this product is supplied as a standalone urethane acrylate, without the addition of photoradical initiators. For more details, please download our catalog. We also offer free samples, web seminars, and product customization. Feel free to contact us.

• Other polymer materials
• others

This product is a radical reaction-type polymer (acrylic acrylate) that has radical-reactive (meth)acryloyl groups added to the side chains of acrylic polymers and is cross-linked by "electron beams," "ultraviolet (UV)," and "visible light." It allows for flexible polymer design ranging from rubbery materials with low Tg (-60°C) to resins with high Tg (+200°C). Thanks to our strengths in "water-based suspension polymerization" technology and "high-viscosity compatible polymerization kettle" facilities, we can also produce solvent-free types of acrylic acrylates. The solvent-free type does not require a drying process during coating since no solvents are used, enabling thick film applications. Please note that this product is supplied as a standalone acrylic acrylate without the addition of photoradical initiators or similar substances. For more details, please download the catalog. We offer free samples, web seminars, and product customization. Please feel free to contact us.

• Other polymer materials
• glue
• others

Art Pearl is a spherical cross-linked microparticle polymer produced by aqueous suspension polymerization, which does not aggregate and easily disperses in water and most organic solvents. There are two types of resin: urethane-based and acrylic-based, with particle sizes ranging from 2 to 150 μm. Acrylic-based is used as a light diffuser and matting agent, while urethane-based is used as a tactile modifier and decorative agent. We also offer cross-linked styrene microparticles, cellulose microparticles, and cross-linked urethane acrylate! For more details, please download the catalog. We also provide free samples, online briefings, and product customization. Please feel free to contact us.

• plastic
• Composite Materials
• Other polymer materials

This is a material that microencapsulates latent heat storage substances in a resin shell. - Excellent handling properties; it does not leak even if the latent heat storage substance liquefies! - No aldehyde generation; it is encapsulated with non-melamine resin! - SDGs; it can utilize waste heat, and the latent heat storage substance is derived from biomass. For more details, please refer to the PDF document or feel free to contact us. We have free samples available.

• Composite Materials

Kenshō Industrial has three strengths! (1) Polymerization technology: We possess polymerization technologies such as aqueous suspension, solution, bulk, and emulsification. (2) Manufacturing equipment: We can carry out integrated production from polymerization to cleaning, drying, and re-dissolution of acrylic, urethane, and urethane acrylate-based polymers. (3) Design technology: We can functionalize polymers utilizing our rich design technologies, ranging from oligomers to high molecular weight substances, functional group introduction, and spherical cross-linked microparticles. We also accept contract manufacturing. Please feel free to consult with us.

• Contract manufacturing