大日化成 List of Products and Services

"BS Rapid Ace" is a fast-setting lightweight premixed mortar that incorporates special lightweight aggregates, demonstrating excellent workability. It is ideal for leveling uneven surfaces and repairing concrete defects. Being a fast-setting type, it allows for finishing in a short time. 【Features】 ■ Easy to work with, allowing for simple repairs and filling ■ As it is premixed, the quality is stable and on-site management is easy ■ Can be applied in a wide range from thin to thick layers ■ Being lightweight, it can also be applied to ceiling surfaces *For more details, please download the PDF or feel free to contact us.

• Mortar and plaster materials
• Reinforcement and repair materials

"Sky Resin Primer E" is a water-based epoxy polymer cement primer that can be used as a base coat primer for various solvent-based and solvent-free, as well as water-based materials. It is suitable for application on substrates such as concrete (dry and wet), mortar (dry and wet), and FRP waterproofing materials. 【Features】 ■ Excellent workability for painting with rollers and brushes due to a special filler formulation ■ Superior solvent resistance, hot water resistance, and water resistance ■ A well-balanced blend of solid epoxy resin emulsion and low-viscosity liquid epoxy resin emulsion, achieving both permeability and film strength ■ Can be applied to both dry and wet surfaces, with excellent adhesion to various substrates ■ Low odor with no risk of flammability *For more details, please download the PDF or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• paint
• Plastering base material

"Hitotoki" is a polymer-cement-based substrate adjustment material and temporary waterproofing material, primarily composed of EVA resin (ethylene-vinyl acetate). After removing the existing waterproofing material, it can temporarily prevent rainwater from entering the building. Since it serves as both a substrate adjustment material and a temporary waterproofing material, it is suitable for renovation work. 【Features】 ■ High safety ■ Excellent workability ■ Superior adhesion *For more details, please download the PDF or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material

The "Sky Resin Aqua Epoxy System" is a corrosion protection method for concrete in water supply facilities. It complies with the quality standards for epoxy resin coatings for concrete water tanks as specified in JWWA K143 (2017). It is primarily used for the internal corrosion protection of concrete water tanks in water supply systems, such as water purification facilities, distribution reservoirs, and water storage tanks. 【Features】 ■ Complies with the ministerial ordinance (Ministry of Health, Labour and Welfare Ordinance No. 15) that establishes technical standards for water supply facilities. ■ All materials have water-dispersible properties, excellent wet adhesion, and enable safe construction. ■ Uses hydrophilic polyamine that does not contain surfactants, improving water resistance and chemical resistance compared to conventional forced-emulsion epoxy. ■ The substrate conditioning material (Sky Resin EPC-T) complies with the quality standards for epoxy-based polymer cement substrate conditioning materials as specified in JWWA K143:2017, Appendix A. ■ The coating film properties are excellent, providing long-term corrosion protection for concrete. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods
• Special Construction Method
• Reinforcement and repair materials

"Sky Resin WE" is a roller-applied epoxy polymer cement-based substrate leveling material that uses a water-based epoxy resin. It can be applied for both thin coatings with a roller and thick coatings with a trowel. *By adding silica sand (No. 6), it can also be used as a patching material (up to 50mm thick). It is mainly used for substrate leveling of concrete, mortar, and various existing substrates (floor materials, FRP, etc.). 【Features】 ■ Formulated with a highly permeable epoxy resin emulsion, providing excellent adhesion ■ Can be applied to both wet and dry surfaces, offering superior adhesion to various substrates ■ Strength develops quickly, allowing for progression to the next step after confirming drying *For more details, please download the PDF or feel free to contact us.

• Plastering base material
• Safety and consumables

"BIG SUN" is a polymer cement-based waterproofing material that forms a strong, durable, permeable waterproof coating or an elastic coating. It is primarily composed of an emulsion and is an environmentally friendly product that reduces odors and toxicity, unlike conventional organic solvent-based waterproofing materials. 【Features】 ■ Considerate of the environment and people ■ Excellent performance combining flexibility and strength ■ Easy, high safety, and quick application ■ Usable for drinking water applications *For more details, please download the PDF or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Waterproofing work

"Sky Court W" is a one-component transparent waterproofing material for exterior walls, primarily composed of a highly transparent water-based polyurethane resin. All the constituent materials, including the primer, are water-based and contain no hazardous substances, eliminating the risk of fire or poisoning. Additionally, it utilizes the properties of polyurethane resin to form a tough and flexible membrane, boasting remarkable crack-bridging ability (over 20mm) and tensile strength (2670N/mm). 【Features】 ■ Materials considerate of residents, workers, and the environment ■ Strong adhesion to substrates with low absorption, such as porcelain tiles, due to the dedicated primer, contributing to the prevention of tile detachment ■ Difficult to sag even when applied to walls, resulting in a flat finish due to appropriate leveling properties ■ No complicated mixing work required due to its one-component nature, etc. *For more details, please download the PDF or feel free to contact us.

• others

"Big Sun Construction Waterproofing Material (Winter Use)" is a polymer cement-based waterproofing material primarily composed of acrylic ester resin. While maintaining the workability of conventional products, its curing and drying performance at low temperatures has dramatically improved. The application interval is significantly shortened in winter and low-temperature environments, allowing for a reduction in construction time. Additionally, the constituent materials, Big Sun Coat SC-800, Big Sun Powder R-800, Big Sun Primer #100, and Big Sun Top AU/AS, have obtained F☆☆☆☆ certification from the Japan Building Finishing Materials Industry Association. 【Features】 ■ Can be applied on wet surfaces ■ Thoroughly pursues the safety of workers ■ Excellent adhesion ■ Can be applied to slopes and steps *For more details, please download the PDF or feel free to contact us.

• others

The "Big Sun UV Sheet Method" not only shortens construction time but also allows for work to be done without the pressure of usable time, as it does not cure unless exposed to ultraviolet light. Due to the uniform FRP sheets produced in a factory, there are no mixing errors, pinholes, or thickness variations on-site. Additionally, on-site work mainly involves the pressing of the substrate and the sheet, eliminating the need for impregnation work with glass fibers. 【Features】 ■ Shortened construction period ■ Stable quality ■ Excellent workability ■ Superior material properties *For more details, please download the PDF or feel free to contact us.

• others

The "Big Sun UGA Method" is a highly advanced water purification treatment facility that supports drinking water in Japan, utilizing an ozone-resistant polymer cement-based waterproofing material. By decomposing excess sludge with ozone, biological degradation becomes easier, allowing for the complete elimination of excess sludge. Since excess sludge does not occur, various benefits arise, including the elimination of the need for final disposal sites. 【Features】 ■ Ozone-resistant polymer cement-based waterproofing material ■ Protects concrete structures from neutralization and abrasion using granular activated carbon ■ Composed of water-based materials, eliminating concerns about fire or poisoning during construction ■ Does not contain harmful substances to the human body ■ Enables efficient construction using spraying machines and other equipment *For more details, please download the PDF or feel free to contact us.

• others

The "Big Sun SR Method" is a slate waterproofing technique that helps suppress indoor temperature rise due to the effects of heat-reflective paint, contributing to energy savings for air conditioning during the summer. With its waterproofing and heat-reflective functions, it inhibits the deterioration and neutralization of slate, extending its lifespan. Additionally, it generates less waste compared to re-roofing or covering, allowing for cost reductions. 【Features】 ■ Suppresses indoor temperature information ■ Inhibits slate deterioration ■ Cost reduction compared to re-roofing and covering *For more details, please download the PDF or feel free to contact us.

• others

The "Big Sun MR Method" is a specialized construction method for metal roofs that uses a highly flexible polymer cement-based waterproofing material primarily composed of acrylic resin and a solar heat reflective paint. The highly flexible waterproof coating, which excels in durability and weather resistance, follows the expansion and contraction of the substrate, maintaining waterproof performance over the long term. The flexible coating also has soundproofing effects, reducing the noise of rain. Additionally, the heat-reflective paint helps to suppress indoor temperature increases, thereby reducing energy costs for air conditioning during the summer. 【Features】 ■ Excellent waterproof performance ■ Excellent rust prevention performance ■ Suppresses indoor temperature rise ■ All constituent materials are environmentally friendly products *For more details, please download the PDF or feel free to contact us.

• others

"Sky Resin Fine Epoxy System" has excellent chemical resistance and water resistance, and is a concrete anti-corrosion method for wastewater treatment facilities that suppresses the corrosion of concrete in sewer facilities. It complies with the Corrosion Suppression Technology and Anti-Corrosion Technology Manual for Sewer Concrete Structures (December 2017 edition). It is a solvent-free epoxy resin, allowing for safe work. 【Features】 ■ Excellent adhesion to concrete ■ Safe to work with ■ Almost no volume shrinkage after curing *For more details, please download the PDF or feel free to contact us.

• others

"Sky Resin Epofiller" is a water-based epoxy polymer cement mortar that boasts high strength and excellent adhesion. Being a two-component type (1 powder/1 liquid), it is easy to use and simple to mix. Its excellent solvent resistance makes it suitable as a substrate preparation material for solvent-based coatings such as urethane and FRP. 【Features】 ■ The main material (powder) has a moist feel, making it less likely to generate dust during mixing. ■ Strength development is rapid, allowing for the next process to proceed the following day. ■ It has excellent adhesion, making it ideal for renovation work. ■ As a water-based material, it allows for easy cleaning of application tools with water. *For more details, please download the PDF or feel free to contact us.

• others

"Sky Resin EPC-T" is a polymer cement-based thin-layer substrate adjustment material made from water-based epoxy resin. The mixed slurry of the main material and hardener has appropriate flow characteristics and forms a smooth adjustment surface. Since it uses a water-based (water-dispersible) epoxy resin that does not require surfactants, its water resistance has dramatically improved compared to conventional forced emulsification-type epoxy emulsion materials. 【Features】 ■ Water-based material with 2 components (1 powder/1 liquid) ■ Room temperature curing type, fully pre-mixed including required water amount ■ Can be applied to a wide range of concrete conditions from dry to wet ■ The main component of the hardener is cationic polyamine ■ Water resistance has dramatically improved compared to conventional products *For more details, please download the PDF or feel free to contact us.

• others

"Sunstopper F" is a polyurethane grout material that reacts immediately upon contact with water, forming a resilient and tough polymer gel that exhibits excellent water-stopping and waterproofing properties. Due to its low viscosity, it penetrates even small cracks and demonstrates a water-stopping effect through foaming pressure. It gels even in flowing water, becoming a robust rubber elastomer, and maintains a chemically stable water-stopping effect. 【Features】 ■ Blends with water in any proportion ■ Excellent safety and durability ■ Penetrates small cracks ■ Maintains a chemically stable water-stopping effect ■ Available in an easy-to-use cartridge type, etc. *For more details, please download the PDF or feel free to contact us.

• others