Silane coupling agent

KH-570 (Silane coupling agent)

Code: KH-570

Category: Silane coupling agent

Origin: Made In China

We are one of the leading professional manufacturers and bulk suppliers of Silane Coupling Agent KH-570 and full-series functional silane products in China. KH-570 is mainly used in paint, adhensive, polymer, rubber, composite material industries.

008618005174481 sales@nanjingchem.com Inquiry

Product Introduction

Silane Coupling Agent KH-570 | Methacrylate Functional Silane A-174|CAS 2530-85-0

1. Product Introduction

Silane Coupling Agent KH-570, also known as 3-Methacryloxypropyltrimethoxysilane (CAS 2530-85-0), is a high-performance methacrylate-functional silane modifier, internationally equivalent to A-174, Z-6030 and KBM-503. It appears as a colorless and transparent oily liquid at room temperature, featuring a unique carbon-carbon double bond active group and hydrolyzable trimethoxy structure. Different from amino and epoxy silanes, KH-570 is specially designed for free-radical polymerization resin systems, delivering superior interfacial bonding and crosslinking modification effects for unsaturated polyester, acrylic, rubber and polyolefin materials.

As a widely recognized universal functional silane in the global composite material industry, KH-570 can build stable molecular bridges between inorganic substrates and organic polymers. Its methacryloxy double bond can copolymerize with unsaturated resins, while methoxy groups hydrolyze and bond with glass, silica, talc and other mineral filler surfaces. This dual-reaction mechanism greatly improves the dry and wet mechanical strength, water resistance, weather resistance and electrical insulation of composite products. Our industrial-grade KH-570 features high purity (≥97%), low volatile content and ultra-stable batch consistency, fully compliant with international fiberglass, coating and rubber modification industrial standards.

2. Product Specifications

Test Item	Standard Specification	Test Method
Chemical Name	3-Methacryloxypropyltrimethoxysilane	–
CAS Number	2530-85-0	–
Molecular Formula	C₁₀H₂₀O₅Si	–
Molecular Weight	248.35	–
Appearance	Colorless transparent oily liquid	Visual Inspection
Effective Content	≥97.0%	GC Detection
Density (20℃, g/cm³)	1.040 – 1.050	Density Meter Test
Refractive Index (25℃)	1.426 – 1.432	Refractometer Test
Boiling Point	Approx. 255℃	Thermal Analysis
Flash Point	≥108℃	Closed Cup Test
Moisture Content	≤0.2%	Karl Fischer Method
Color (Pt-Co)	≤20#	Colorimeter Test

3. Product Features & Applications

Core Product Features

Specialized double-bond polymerization modification: KH-570 contains active methacrylate double bonds, enabling free-radical copolymerization with unsaturated polyester, acrylic resin, EPDM rubber and polyolefin materials. It achieves chemical integration rather than simple physical blending, fundamentally improving interface binding force and composite stability.
Excellent dry & wet strength retention: Different from conventional silane agents with poor water resistance, KH-570 significantly enhances the mechanical strength of composite materials under both dry and humid conditions. It effectively prevents strength attenuation, delamination and water ingress failure of fiberglass products and modified fillers in wet environments.
Superior electrical insulation performance: After modification, mineral-filled polymer composites show optimized dielectric loss factor and specific capacitance stability. It greatly improves the electrical insulation and moisture resistance of wire and cable materials, electronic fillers and insulating composite parts.
Wide compatibility & easy hydrolysis: It is soluble in conventional organic solvents such as ethanol, acetone and toluene, and can be stably hydrolyzed in weakly acidic water. It features excellent compatibility with unsaturated resins, rubber systems and polyolefin plastics, suitable for one-batch addition and continuous industrial production.
Low volatility & weather resistance: With low volatile residue and stable thermal performance, KH-570 will not decompose or volatilize during medium and high-temperature processing. It improves the outdoor aging resistance, UV resistance and long-term service stability of modified composite materials.

Main Application Fields

Fiberglass Reinforced Plastics (FRP): Serving as the preferred glass fiber surface treatment agent for unsaturated polyester FRP products. It enhances the interface adhesion between glass fiber and resin matrix, improves the transparency, mechanical toughness and water resistance of FRP materials, and is widely used in building profiles, pipeline materials and craft composite parts.
Rubber & Polyolefin Modification: Ideal for filler modification of EPDM rubber, polyethylene, polypropylene and polystyrene materials. It activates the surface of talc powder, calcium carbonate, mica and silica fillers, improves filler dispersion, reduces system viscosity, and enhances the tensile strength and aging resistance of rubber and plastic products.
Coating & Adhesive Industry: Applied in acrylic coatings, unsaturated polyester paints and special adhesives. It improves the bonding durability between coating film/inorganic fillers and base materials, enhances scratch resistance and weather resistance of coatings, and optimizes the adhesion performance of polymer adhesives.
Wire & Cable Insulation Materials: Used for surface modification of inorganic insulating fillers in high-voltage and low-voltage cable materials. It stabilizes electrical parameters under humid conditions, reduces dielectric loss, and improves the insulation performance and service life of wire and cable products.
Functional Composite Materials: Suitable for modification of micro glass beads, nano silica and fly ash fillers, widely used in transparent composite materials, waterproof materials and high-performance polymer modified engineering materials.

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 measures, fully compliant with long-distance international sea transportation and stacked warehouse storage standards.

Storage Requirements

Store Silane Coupling Agent KH-570 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 prevent moisture absorption, hydrolysis deterioration and polymerization failure. The product is sensitive to humid air and high temperature, 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: In accordance with IMDG, ADR and international general transportation regulations, Silane Coupling Agent KH-570 is not classified as dangerous goods for sea, air and land transportation. It only has mild skin and eye irritation properties, which do not affect international freight declaration and customs clearance.

UN Number: N/A (No UN transport number required)

Hazard Grade: No dangerous goods transport grade, no official supervision restrictions for international shipping

Shipping Notes: Although KH-570 is a non-dangerous commodity, it is sensitive to moisture and high temperature. During international sea transportation, avoid long-term damp stacking, rain soaking, violent extrusion and package damage. Mixing with strong acids, strong oxidants and high-temperature volatile chemicals is prohibited. We provide a full set of compliant export documents including official English MSDS, batch COA analysis reports and customs clearance files to support fast, smooth and standard global delivery.

5. Company Introduction & Production Strength

Founded in 2001, our company is a well-established high-tech manufacturer and reliable global export supplier specializing in full-series functional silane coupling agents in China. We own a standardized modern fine chemical production base covering 100 acres, equipped with 5 full-automatic professional production lines dedicated to the synthesis, purification and refining of methacrylate silane, epoxy silane, amino silane and modified silane products including KH-570. 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 composite material, rubber and coating 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-570 and similar methacrylate-functional 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-570 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-570?

A1: Silane Coupling Agent KH-570 (3-Methacryloxypropyltrimethoxysilane, CAS 2530-85-0) is a high-performance methacrylate-functional silane modifier, equivalent to international A-174 grade. It features active carbon-carbon double bond and hydrolyzable methoxy groups, specially developed for free-radical polymerization resin and rubber systems. It effectively improves interfacial adhesion, dry/wet mechanical strength and electrical insulation of composite materials, widely used in fiberglass reinforcement, rubber plastic modification, industrial coatings and wire & cable insulating materials.

Q2: What specifications of KH-570 can you supply?

A2: We mainly supply premium industrial-grade Silane Coupling Agent KH-570 with effective content ≥97.0%, featuring low moisture, low chroma, low volatility and stable batch performance. Customized high-purity refined grades and special formula specifications can be provided according to customers’ special industrial production 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-570 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-570 and full-series functional silane 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-570 dangerous goods for international sea shipment?

A5: No. Verified by international IMDG transportation standards, Silane Coupling Agent KH-570 is categorized as non-dangerous general fine chemical with no UN number and no dangerous goods grade. It features simple declaration procedures and low logistics costs, enabling safe, efficient and cost-effective global sea transportation.

008618005174481

sales@nanjingchem.com