Description

3-[(Diethylamino)Dimethylsilyl]Propyl Methacrylate CAS NO 85665-74-3 is a specialized organosilicon methacrylate monomer featuring a reactive silyl ether group and a polymerizable methacrylate moiety. This dual functionality makes it a critical building block for creating advanced hybrid organic-inorganic polymers with tailored surface properties. It is essential for manufacturers and R&D chemists in the coatings, adhesives, and advanced materials sectors seeking to enhance product performance through precise molecular design.

Application

• Surface Modification Agent: Imparts permanent hydrophobicity, oleophobicity, or specific adhesion properties to glass, metal, and polymer surfaces.
• Crosslinking Co-monomer: Used in UV-curable resins, acrylic paints, and pressure-sensitive adhesives to improve crosslink density, thermal stability, and chemical resistance.
• Silicone Hybrid Polymers: A key precursor for synthesizing silicone-modified acrylic resins, resulting in materials with enhanced flexibility, weatherability, and release characteristics.
• Adhesion Promoter: Enhances the bonding between organic coatings and inorganic substrates like metals, glass, and minerals in composite materials.
• Fiber and Textile Treatment: Used to create durable water-repellent and stain-resistant finishes on fabrics and technical fibers.
• Optical Materials: Incorporated into siloxane-based polymers for lenses, waveguides, and other optical components requiring specific refractive indices and durability.

Basic Information

Product Name	3-[(Diethylamino)Dimethylsilyl]Propyl Methacrylate
CAS No.	85665-74-3
Molecular Formula	C13H27NO2Si
Molecular Weight	257.45 g/mol
Synonyms	3-(Diethylaminodimethylsilyl)propyl methacrylate; N,N-Diethyl-3-(methacryloyloxy)propyldimethylsilylamine; Methacryloxypropyldiethylaminodimethylsilane; Diethylamino Dimethylsilyl Propyl Methacrylate; (3-Methacryloxypropyl)diethylaminodimethylsilane; N-[3-(Dimethyl(methacryloyloxy)propyl)silyl]-N-ethylethanamine; Silane AY 43-031 (trade name variant)
EINECS	Contact for details

Quality Control

Our production of 3-[(Diethylamino)Dimethylsilyl]Propyl Methacrylate adheres to stringent quality management protocols. Every batch undergoes comprehensive analysis including assay (GC/HPLC), identity confirmation (IR, NMR), and purity checks to ensure consistency and reliability for your formulations. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C/59-77°F). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.440 - 1.450
Density (g/mL, 25°C)	0.90 - 0.95

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