Description

11-Allyloxyundecyltrimethoxysilane is a specialized organosilane coupling agent featuring a long-chain alkyl spacer terminated with an allyloxy group and a hydrolyzable trimethoxysilyl group. This unique bifunctional structure enables it to act as a molecular bridge, creating durable covalent bonds between inorganic substrates and organic polymer matrices. It is essential for formulators and material scientists seeking to enhance the adhesion, dispersion, and mechanical properties of composite materials. Key industries that utilize this advanced silane include advanced composites, specialty coatings, adhesives, and the modification of fillers and reinforcements.

Application

• Surface Modification of Fillers: Primarily used to treat glass fibers, minerals (e.g., silica, talc), and other inorganic fillers to improve their compatibility and bonding with polymer resins like polyolefins, epoxies, and acrylics.
• Adhesion Promotion in Coatings and Sealants: Enhances the wet and dry adhesion of paints, primers, and sealants to challenging substrates such as metals, glass, and plastics, providing excellent durability and corrosion resistance.
• Reinforcement of Composite Materials: Serves as a critical coupling agent in fiber-reinforced plastics (FRP) and engineering thermoplastics, increasing interfacial strength and resulting in composites with higher tensile and flexural strength.
• Crosslinking Agent for Silicone Polymers: The allyloxy group can participate in hydrosilylation reactions, making it useful as a crosslinker or reactive modifier in silicone rubber and resin formulations.
• Hydrophobic Treatment of Surfaces: Imparts water-repellent characteristics to treated surfaces, useful in creating protective coatings and water-resistant composite materials.

Basic Information

Product Name	11-Allyloxyundecyltrimethoxysilane
CAS No.	1196453-35-6
Molecular Formula	C₁₇H₃₆O₄Si
Molecular Weight	332.56 g/mol
Synonyms	Allyloxyundecyltrimethoxysilane; 3-[(11-Trimethoxysilyl)undecyloxy]prop-1-ene; Undecyl, 11-(2-propen-1-yloxy)-, trimethoxy silane derivative; Silane, trimethoxy[11-(2-propen-1-yloxy)undecyl]-; (Allyloxyundecyl)trimethoxysilane; 11-(Allyloxy)undecyltrimethoxysilane; OXA 11 Silane; A silane coupling agent with allyloxy group
EINECS	Contact for details

Quality Control

Our production of 11-Allyloxyundecyltrimethoxysilane adheres to a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed against stringent internal specifications using advanced analytical techniques such as GC, NMR, and FTIR. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key physical properties is provided with every shipment to support your quality assurance and R&D processes.

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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed and under a dry inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Clear colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20/D)	1.440 - 1.445
Density (g/mL, 25°C)	0.92 - 0.96

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