Description

Methacryloxymethyltris(Trimethylsiloxy)Silane is a highly functionalized organosilicon monomer featuring both methacrylate and multiple siloxy groups. This unique hybrid structure makes it a critical cross-linking agent and adhesion promoter in advanced polymer systems. It is essential for formulators and manufacturers in the silicone, coatings, and specialty adhesives industries seeking to enhance material durability, weather resistance, and surface bonding.

Application

• Silicone Resin & Rubber Modification: Acts as a reactive cross-linker to improve the mechanical strength, thermal stability, and chemical resistance of silicone-based elastomers and resins.
• UV-Curable Coatings & Inks: Serves as a key monomer in radiation-curable formulations, contributing to fast curing speeds, excellent film hardness, and superior adhesion to various substrates like metals, plastics, and glass.
• Adhesives & Sealants: Functions as an effective adhesion promoter, particularly in silicone hybrid sealants and acrylic pressure-sensitive adhesives, enhancing bond strength to difficult surfaces.
• Surface Treatment & Coupling Agent: Used to modify inorganic fillers (e.g., silica, glass fibers) and surfaces, improving their compatibility and dispersion within organic polymer matrices.
• Dental & Biomedical Materials: Employed in the synthesis of siloxane-containing methacrylate copolymers for dental composites and other biomedical applications requiring biocompatibility and precise mechanical properties.
• Optical & Electronic Encapsulants: Incorporated into protective coatings and potting compounds for LEDs and electronic components, offering excellent transparency, moisture resistance, and long-term reliability.

Basic Information

Product Name	Methacryloxymethyltris(Trimethylsiloxy)Silane
CAS No.	74681-63-3
Molecular Formula	C16H38O5Si4
Molecular Weight	422.81 g/mol
Synonyms	3-Methacryloxypropyltris(trimethylsiloxy)silane; Tris(trimethylsiloxy)silylpropyl methacrylate; Methacryloxypropyltris(trimethylsiloxy)silane; MEMO; γ-Methacryloxypropyl tris(trimethylsiloxy)silane; Silane A-174 NS; Tris(trimethylsiloxy)-3-methacryloxypropylsilane; 3-(Trimethoxysilyl)propyl methacrylate derivative
EINECS	Contact for details

Quality Control

Our Methacryloxymethyltris(Trimethylsiloxy)Silane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or HPLC, identity confirmation (IR, NMR), and impurity profiling, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C (59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from heat and sources of ignition.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.408 - 1.412
Density (20°C)	0.96 - 0.98 g/cm³
Moisture (KF)	≤ 0.1%

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