Silane coupling agent

Silane Coupling Agent (KH-108)

Code: KH-108

Chemical name: γ-Piperazinylpropylmethyldimethoxysilane

CAS: 128996-12-3‌

Origin: Made In China

We are one of the leading professional manufacturers and bulk suppliers of silane coupling agent (Code: KH-108) and full-series silane products in China. KH-108 is mainly used as silane coupling agent in paint, adhensive industries.

008618005174481 sales@nanjingchem.com Inquiry

Product Introduction

Silane Coupling Agent KH-108 | Piperazinylpropyl Methyldimethoxysilane|CAS 128996-12-3‌

1. Product Introduction

Silane Coupling Agent KH-108, chemically known as Piperazinylpropyl Methyldimethoxysilane, is a high-performance bifunctional organic silane modifier developed for textile finishing, polymer modification and fine industrial material treatment. It appears as a colorless to slightly pale yellow transparent oily liquid at room temperature. Featuring a unique piperazine-based molecular structure and dimethoxy hydrolyzable groups, KH-108 delivers excellent hydrolysis reactivity, cross-linking performance and low yellowing characteristics compared with conventional amino silane coupling agents.

As a specialized high-end silane product in the global fine chemical industry, KH-108 effectively bridges inorganic substrates and organic polymer materials, forming stable chemical bonding layers. It is widely recognized for outstanding softening modification effect, superior smoothness and excellent anti-yellowing performance. This silane coupling agent can significantly improve the texture, fluffiness, water resistance and aging resistance of textile fabrics and composite materials. Our industrial-grade KH-108 features high purity, stable batch consistency and low impurity content, fully compliant with international industrial production and environmental protection standards, serving as a preferred modification material for high-grade textile finishing and new composite materials worldwide.

2. Product Specifications

Test Item	Standard Specification	Test Method
Chemical Name	Piperazinylpropyl Methyldimethoxysilane	–
Appearance	Colorless to pale yellow transparent liquid	Visual Inspection
Effective Content	≥95.0%	GC Detection
Free Amine Content	≤0.5%	Titration Method
Density (25℃, g/cm³)	0.930 ± 0.020	Density Meter Test
Refractive Index (25℃)	1.445 ± 0.005	Refractometer Test
Boiling Point	Approx. 260℃	Thermal Analysis
pH Value	7.0 – 10.0	pH Meter Test
Moisture Content	≤0.2%	Karl Fischer Method

3. Product Features & Applications

Core Product Features

Ultra-low yellowing performance: Different from traditional dual-amino silane coupling agents, KH-108 adopts a unique piperazine molecular structure, which effectively inhibits fabric and material yellowing during high-temperature finishing and long-term use. It perfectly meets the production requirements of high-grade light-colored and white textile products.
Excellent softening & fluffing effect: This bifunctional silane modifier can endow cotton, linen, wool and blended fabrics with superior softness, smoothness and fluffy texture. It significantly improves fabric hand feel without affecting the original air permeability and hydrophilicity of materials.
Efficient interfacial bonding ability: The hydrolyzable methoxy groups can react with hydroxyl groups on inorganic surfaces, while the piperazine active groups form stable combination with organic polymers. It effectively enhances the interfacial adhesion, wash resistance and durability of composite materials.
Stable hydrolysis & excellent compatibility: KH-108 has moderate hydrolysis speed and stable reaction activity. It features good compatibility with water-based solvents, silicone emulsions and various polymer resins, suitable for diversified industrial formula systems and continuous production processes.
Long-term anti-aging & weather resistance: It can significantly improve the thermal aging resistance, ultraviolet resistance and chemical stability of finished materials, effectively extending the service life of textiles and modified composite products.

Main Application Fields

High-Grade Textile Finishing Industry: Specially used for soft finishing of cotton, linen, wool, silk and chemical fiber blended fabrics. It improves fabric softness, smoothness and fluffiness, solves the yellowing problem of traditional amino silicone oil finishing, and maintains excellent hydrophilic and breathable performance of textiles, widely applied in high-end garment and home textile processing.
Modified Silicone Oil & Emulsion Manufacturing: As a core raw material for synthesizing high-performance piperazine-based modified silicone oil and silicone emulsion. The modified products have better anti-yellowing and softening effects than conventional amino silicone oil, becoming mainstream materials for high-grade textile finishing agents.
Inorganic Filler Surface Modification: Used for surface treatment of silica, talc powder, calcium carbonate and other mineral fillers. It improves the dispersion performance of fillers in organic resins, reduces system viscosity, and enhances the mechanical toughness and stability of composite materials.
Coating & Adhesive Modification: Applied as adhesion promoter and cross-linking auxiliary agent in water-based coatings, industrial adhesives and sealants. It improves the bonding strength between coating glue layer and inorganic substrates, and enhances the water resistance and weather resistance of coating films.
Polymer Composite Material Enhancement: Suitable for modification of rubber, plastic and polymer composite materials, improving the interfacial compatibility between inorganic fillers and organic polymers, and optimizing the overall mechanical properties and processing performance of materials.

4. Packaging, Storage & International Sea Shipping

Packaging Standard

Standard export packaging: 200kg sealed iron drum. Customized small packages including 5kg, 25kg drums and 1000kg IBC tote tanks are available upon customer requirements. All packages adopt professional leak-proof, sealed and moisture-proof treatment, fully compliant with international long-distance sea transportation and stacked storage standards.

Storage Requirements

Store Silane Coupling Agent KH-108 in a cool, dry, ventilated and dust-free warehouse environment. Keep away from high-temperature heat sources, open flames, strong acids, strong oxidants and direct sunlight to prevent hydrolysis, deterioration and performance attenuation. The product is prone to moisture absorption, so the package must be kept tightly sealed during storage and handling. The valid shelf life is 12 months under standard sealed storage conditions. Expired products need full-index re-inspection before use, and only qualified products can be put into production.

International Shipping & Hazard Classification

Hazardous Goods Confirmation: Silane Coupling Agent KH-108 is classified as Class 8 Corrosive Liquid for international transportation

UN Number: UN 2735

Hazard Grade: 8 (Corrosive Substances)

Packing Group: III

Shipping Notes: As Class 8 dangerous goods, international sea transportation must strictly comply with IMDG dangerous goods regulations. Avoid high-temperature exposure, violent collision, rain soaking and mixed loading with acidic/oxidizing goods. We provide complete compliant export documents including English MSDS, COA, dangerous goods declaration files and customs clearance materials to ensure safe and smooth global delivery.

5. Company Introduction & Production Strength

Founded in 2001, our company is a professional high-tech manufacturer and global export supplier of silane coupling agents and fine chemical materials in China. We own a standardized modern chemical production base covering 100 acres, equipped with 5 full-automatic professional production lines specially dedicated to silane series products including KH-108, KH-540 and other modified silane coupling agents. With mature synthesis processes, strict purification technology and stable large-scale production capacity, we can flexibly support small trial orders and large-batch full-container orders to meet diversified high-standard procurement demands of global industrial customers.

We attach great importance to independent technological R&D and innovative upgrading. 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-108 and similar silane products, including independent improvement of production synthesis processes, development of high-precision impurity detection and performance testing methods, upgrading of high-stability product formulas, and full-process environmental protection treatment technology for industrial waste gas, wastewater and solid waste. It ensures stable batch quality, low impurity content and full environmental compliance of our products.

Our factory has obtained official 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-108. With more than 20 years of chemical export experience, our silane coupling agent products are exported to Southeast Asia, Middle East, Europe, North America and other global markets, winning long-term trust and recognition from overseas industrial buyers and processing manufacturers.

6. FAQ

Q1: What is Silane Coupling Agent KH-108?

A1: Silane Coupling Agent KH-108 (Piperazinylpropyl Methyldimethoxysilane) is a high-performance bifunctional modified silane coupling agent. With a unique piperazine molecular structure, it features ultra-low yellowing, excellent softening modification and stable interfacial bonding performance. It is mainly used for high-grade textile finishing, modified silicone oil synthesis and inorganic material surface treatment, and is a high-efficiency and environment-friendly fine chemical additive widely used in the global textile and composite material industries.

Q2: What specifications of KH-108 can you supply?

A2: We mainly supply premium industrial-grade Silane Coupling Agent KH-108 with effective content ≥95.0%, featuring ultra-low free amine, low moisture and stable batch performance. Customized high-purity refined grades can be provided according to customers’ special production 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 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-108 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-108 and full-series 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 products for industrial purchasers worldwide.

Q5: Is KH-108 dangerous goods for international sea shipment?

A5: Yes. Silane Coupling Agent KH-108 is classified asClass 8 corrosive dangerous liquid with UN number 2735 and Packing Group III. We have professional dangerous goods packaging, declaration and logistics capabilities to ensure 100% compliant, safe and smooth international sea transportation.

008618005174481

sales@nanjingchem.com