Silane Coupling Agent (KH-470)
Code: KH-470
Chemical name: Bis[3-(triethoxysilyl)propyl]tetrasulfide
CAS: 40372-72-3
Use: Silane coupling agent
Origin: China
Contact us
- No.420 Zhonghua Road,Qinghuai District, Nanjing,China 210001
- 008618005174481
- Mr.Sam
- sales@nanjingchem.com
Product Introduction
Silane Coupling Agent KH-470 | High Activity Amino Silane Adhesion Promoter|CAS 40372-72-3
1. Product Introduction
Silane Coupling Agent KH-470 is a high-activity bifunctional amino silane modifier with excellent interfacial bonding performance. It is a colorless and transparent oily liquid at room temperature, featuring unique high-reactivity amino functional groups and hydrolyzable alkoxy groups. Compared with conventional ordinary silane coupling agents, KH-470 delivers faster hydrolysis speed, higher crosslinking efficiency and more stable bonding effect, effectively solving the poor adhesion and interface peeling problems between inorganic substrates and organic resins.
As a versatile and high-performance adhesion promoter in the global fine chemical industry, Silane Coupling Agent KH-470 can firmly connect glass, metal, concrete, mineral fillers and other inorganic materials with epoxy, polyurethane, acrylic and other organic polymers. It significantly enhances interface bonding strength, water resistance, weather resistance and mechanical stability of composite materials. Our industrial-grade KH-470 features high purity, low volatility, stable batch consistency and excellent formula compatibility, fully compliant with international industrial coating, adhesive and composite material production standards, widely trusted by global industrial manufacturers.
2. Product Specifications
| Test Item | Standard Specification | Test Method |
| Product Name | Silane Coupling Agent KH-470 | – |
| Appearance | Colorless transparent oily liquid | Visual Inspection |
| Effective Content | ≥95.0% | GC Detection |
| Density (20℃, g/cm³) | 1.04 ± 0.02 | Density Meter Test |
| Viscosity (20℃, mPa·s) | 6.5 ± 1.0 | Viscosity Tester Test |
| Boiling Point (760mmHg) | Approx. 286℃ | Thermal Analysis |
| Refractive Index (25℃) | 1.440 ± 0.005 | Refractometer Test |
| Moisture Content | ≤0.2% | Karl Fischer Method |
| Free Amine Content | ≤0.5% | Titration Method |
3. Product Features & Applications
Core Product Features
- High reaction activity & fast crosslinking: KH-470 high-activity amino silane has rapid hydrolysis and crosslinking reaction speed. It can quickly form dense and stable molecular bonding layers between inorganic substrates and organic resins, effectively improving interfacial binding force and solving common problems such as glue layer peeling and poor adhesion.
- Excellent universal adhesion promotion: This silane coupling agent shows outstanding modification and adhesion enhancement effects on glass, metal, concrete, silica, calcium carbonate and various mineral fillers. It is compatible with epoxy, polyurethane, acrylic, polyester and most polymer systems with wide application adaptability.
- Low volatility & high temperature resistance: Featuring low volatile content and stable thermal performance, KH-470 will not decompose or volatilize in large quantities during medium and high-temperature processing. It maintains stable interfacial adhesion performance and improves the high-temperature resistance of composite materials.
- Superior water resistance & weather resistance: After crosslinking and film formation, it forms a hydrophobic stable interface structure, which significantly improves the water soaking resistance, moisture resistance and outdoor aging resistance of coatings, adhesives and composite products, extending overall service life.
- Stable formula compatibility & easy operation: It can be uniformly dispersed in water-based and solvent-based systems without precipitation and delamination. Suitable for low-dose addition modification, it does not affect the original color, viscosity and mechanical properties of the base formula, meeting continuous industrial production needs.
Main Application Fields
- Industrial Coating & Paint Industry: Used as adhesion promoter and interface modifier for epoxy coatings, polyurethane coatings, anti-corrosion paints and architectural waterproof coatings. It enhances the bonding force between the coating film and metal, concrete and glass substrates, effectively preventing coating peeling, blistering and cracking, and improving anti-corrosion and weather resistance performance.
- Adhesive & Sealant Manufacturing: Widely added to structural adhesives, waterproof sealants, glass glues and industrial bonding agents. It improves the bonding durability of adhesives on inorganic surfaces, enhances water resistance and aging resistance of adhesive joints, and solves the problem of reduced bonding strength in humid environments.
- Inorganic Filler Surface Modification: Applied for surface activation treatment of silica, talc powder, calcium carbonate, mica and other mineral fillers. It improves the dispersion uniformity of fillers in organic resins, reduces system viscosity, increases filler loading capacity, and enhances the mechanical strength and toughness of modified composite materials.
- Glass Fiber & Composite Materials: Used as a surface treatment agent for glass fiber and fiber reinforced composite materials. It optimizes the interface combination between fiber and resin matrix, improves the overall compactness and structural stability of FRP products, and is widely used in building reinforcement and industrial composite parts.
- Construction & Waterproofing Materials: Suitable for interface treatment of concrete, cement and stone substrates. It improves the adhesion between waterproof materials, repair mortars and base layers, and enhances the overall firmness and durability of building waterproof and reinforcement projects.
4. Packaging, Storage & International Sea Shipping
Packaging Standard
Standard export packaging: 200kg sealed iron drum with leak-proof and inner anti-corrosion treatment. Customized small specifications including 5kg, 25kg sealed drums and 1000kg IBC tote tanks are available upon customer requests. All packages adopt professional sealing, moisture-proof and anti-collision protection, fully compliant with long-distance international sea transportation and stacked warehouse storage standards.
Storage Requirements
Store Silane Coupling Agent KH-470 in a cool, dry, ventilated and dust-free indoor warehouse. Keep away from high-temperature heat sources, open flames, strong acids, strong oxidants and direct sunlight to avoid moisture absorption, hydrolysis deterioration and performance attenuation. The product is sensitive to humid air, so all packages must be tightly sealed during storage, transportation and use. The valid shelf life is 12 months under standard sealed storage conditions. Expired products must undergo full-index re-inspection before application, and only qualified products can be used for formal production.
International Shipping & Hazard Classification
Hazardous Goods Confirmation: Silane Coupling Agent KH-470 is classified as Class 8 Corrosive Liquid & Irritant Dangerous Goods
UN Number: UN 2735
Hazard Grade: 8 (Corrosive Substances)
Packing Group: III
Shipping Notes: As Class 8 dangerous goods, international sea transportation must strictly follow IMDG international dangerous goods regulations. Avoid high-temperature exposure, violent extrusion, collision and rain soaking during shipment. Prohibit mixed loading with strong acidic and strong oxidizing chemicals. We provide complete compliant export documents including English MSDS, official COA, dangerous goods declaration and full set of customs clearance files to ensure safe, standardized and smooth global delivery.
5. Company Introduction & Production Strength
Founded in 2001, our company is a professional high-tech manufacturer and reliable global export supplier of full-series silane coupling agents and fine chemical additives in China. We own a standardized modern fine chemical production base covering 100 acres, equipped with 5 full-automatic professional production lines specially used for the synthesis, purification and compounding of silane products including KH-470, KH-108 and other mainstream coupling agents. With mature independent synthesis technology, strict hierarchical purification processes and stable large-scale production capacity, we can flexibly support small trial orders and large-batch FCL orders to meet diversified high-standard procurement demands of global coating, adhesive and new material manufacturers.
We always prioritize independent technological R&D and innovative iteration. Professional R&D engineers and senior laboratory testing technicians account for more than 20% of our total employees. Our R&D team focuses on core technical research and optimization of Silane Coupling Agent KH-470 and similar amino silane products, including independent upgrading of production synthesis processes, development of high-precision purity detection and performance testing methods, optimization of high-stability product formulas, and full-process environmental protection treatment technology for industrial waste gas, wastewater and solid waste. This strict R&D system ensures ultra-stable batch quality, low impurity content and full environmental compliance of all exported products.
Our factory has obtained authoritative ISO9001 International Quality Management System Certification and national chemical production license, with complete production qualifications and standardized whole-process quality control system. We implement strict raw material incoming inspection, real-time production monitoring and full-index batch testing for every shipment of KH-470 to guarantee stable product performance. With more than 20 years of professional chemical export experience, our silane coupling agent products are exported to Southeast Asia, the Middle East, Europe, North America and other global markets, winning long-term trust and stable cooperation from overseas industrial buyers.
6. FAQ
Q1: What is Silane Coupling Agent KH-470?
A1: Silane Coupling Agent KH-470 is a high-activity bifunctional amino silane adhesion promoter. With active amino functional groups and hydrolyzable alkoxy groups, it can build stable molecular bridges between inorganic substrates and organic polymer materials. It features high bonding activity, low volatility and excellent water and weather resistance, widely used in industrial coatings, adhesives, filler modification and composite material enhancement, serving as a core universal interface modifier in the global fine chemical industry.
Q2: What specifications of KH-470 can you supply?
A2: We mainly supply premium industrial-grade Silane Coupling Agent KH-470 with effective content ≥95.0%, featuring low moisture, low free amine and stable batch performance. Customized high-purity refined grades can be provided according to customers’ special industrial formula requirements. For every batch of products, we can provide complete official documents including standard English MSDS, COA (Certificate of Analysis) and professional batch test reports to support global customs clearance and product quality inspection.
Q3: What are your export trade advantages for global buyers?
A3: We provide low-risk, flexible and buyer-centric global export services for all overseas partners, with core competitive advantages as follows:
- Multiple flexible payment methods: Support T/T, L/C at sight and other negotiable international payment terms to reduce customer cooperation risks.
- Free sample service: Provide free KH-470 test samples, customers only need to bear international courier freight.
- Support trial order: Fully accept small-batch trial orders for new customers to test product quality and application effect before bulk cooperation.
- Complete document support: Provide standard English MSDS, batch COA, ISO certification, production license and full set of export clearance documents.
Q4: What is your company’s market positioning and qualification?
A4: We are one of the leading professional manufacturers and bulk suppliers of silane coupling agent KH-470 and full-series silane modifier products in China. We hold valid national chemical production licenses and authoritative ISO9001 international quality system certification. Integrating independent R&D, standardized large-scale production and global export sales, we focus on providing high-quality, cost-effective and stable silane coupling agent solutions for industrial purchasers worldwide.
Q5: Is KH-470 dangerous goods for international sea shipment?
A5: Yes. Silane Coupling Agent KH-470 belongs to Class 8 corrosive dangerous goods with UN number 2735 and Packing Group III. We have professional dangerous goods packaging, declaration and logistics teams to provide 100% compliant, safe and efficient international sea transportation services.
