Description

3-(Diethoxymethylsilyl)Propyl Methacrylate CAS NO 65100-04-1 is a bifunctional organosilane monomer that combines a polymerizable methacrylate group with a hydrolysable ethoxysilane group. This unique structure makes it a critical coupling agent and adhesion promoter, enabling strong bonds between organic polymers and inorganic substrates. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced composite materials and dental applications where durable, moisture-resistant interfaces are required.

Application

• Adhesion Promoter in Coatings: Enhances the bonding of acrylic, epoxy, and polyurethane coatings to glass, metal, and mineral surfaces, improving durability and corrosion resistance.
• Coupling Agent for Composites: Used in fiberglass-reinforced plastics (FRP) and mineral-filled composites to improve the interfacial strength between the resin matrix and the reinforcement.
• Surface Modification of Fillers: Treats silica, alumina, and other inorganic fillers to improve their dispersion and compatibility in polymer systems, enhancing mechanical properties.
• Crosslinking Agent in Silicone-Modified Polymers: Serves as a key monomer in the synthesis of moisture-curable acrylic-silicone hybrid resins for sealants and adhesives.
• Dental and Biomedical Materials: Incorporated into dental composites and bone cements to improve bonding to tooth enamel or prosthetic materials.
• Pressure-Sensitive Adhesives (PSAs): Modifies acrylic PSA formulations to enhance adhesion to low-surface-energy substrates.
• Optical and Electronic Encapsulants: Used in formulations for LED packaging and electronic device protection, offering good adhesion and environmental stability.

Basic Information

Product Name	3-(Diethoxymethylsilyl)Propyl Methacrylate
CAS No.	65100-04-1
Molecular Formula	C12H24O4Si
Molecular Weight	260.41 g/mol
Synonyms	3-(Methacryloyloxy)propylmethyldiethoxysilane; Methacryloxypropylmethyldiethoxysilane; MEMO; γ-Methacryloxypropylmethyldiethoxysilane; Dynasylan® MEMO; Silquest® A-174 MD; 3-(Methacryloxy)propylmethyl-diethoxysilane; MDES
EINECS	265-423-5

Quality Control

Our production of 3-(Diethoxymethylsilyl)Propyl Methacrylate adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and assay, Karl Fischer titration for moisture content, and refractive index measurement. We provide comprehensive Certificates of Analysis (COA) with each shipment to ensure traceability and compliance with your specifications and relevant industry standards.

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). Keep the container tightly sealed under a dry, inert atmosphere (e.g., nitrogen) 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 to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.428 - 1.432
Density (20°C)	0.96 - 1.00 g/cm³
Water Content (KF)	≤ 0.2%

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