Description

3-Methacryloxypropylmethyldimethoxysilane is a high-purity organosilane coupling agent featuring both methacrylate and methoxysilane functional groups. This dual functionality is critical for creating strong, durable bonds between inorganic materials and organic polymer matrices. It is an essential raw material for formulators and manufacturers in the composites, coatings, and adhesives industries seeking to enhance material performance and longevity.

Application

• Silane Coupling Agent for Composites: Improves the interfacial adhesion between glass, mineral, or metal fillers and methacrylate-based polymer resins (e.g., PMMA), significantly enhancing mechanical properties in fiberglass-reinforced plastics and mineral-filled composites.
• Surface Primer & Adhesion Promoter: Used to pretreat substrates like glass, metals, and minerals to promote adhesion of acrylic and methacrylic coatings, inks, and adhesives, offering excellent water resistance and durability.
• Crosslinking Agent & Modifier: Functions as a crosslinker in silicone-modified acrylic resins and RTV silicones, improving thermal stability, mechanical strength, and chemical resistance of the final cured product.
• Dental & Medical Materials: A key component in dental composite resins and bone cements, where it bonds the silicate filler to the methacrylate polymer matrix, ensuring strength and biocompatibility.
• Waterproofing & Sealants: Incorporated into sealants and waterproofing formulations to enhance adhesion to wet or mineral surfaces and improve weatherability.
• Fiber Sizing: Applied as a sizing or finish on glass and other fibers to protect them and ensure optimal bonding to the polymer matrix during composite manufacturing.

Basic Information

Item	Details
Product Name	3-Methacryloxypropylmethyldimethoxysilane
CAS No.	14513-34-9
Molecular Formula	C11H22O4Si
Molecular Weight	246.38 g/mol
Synonyms	Methacryloxypropylmethyldimethoxysilane; 3-(Methacryloyloxy)propylmethyldimethoxysilane; MEMO; γ-Methacryloxypropylmethyldimethoxysilane; Methacryloxymethyltrimethoxysilane (common misnomer); KH-571 (a common product code); Dynasylan® MEMO; Silane A-174 (variant); Methacryloxy functional silane
EINECS	Contact for details

Quality Control

Our production of 3-Methacryloxypropylmethyldimethoxysilane adheres to stringent quality management systems to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analysis, including assay, purity verification, and critical impurity profiling. Certificates of Analysis (COA) documenting full specifications are available for every shipment. We support customer audits and can provide material to meet specific regulatory or internal quality standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and polymerization. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.430 - 1.435
Density (20°C)	1.040 - 1.050 g/cm³

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.