Description

A-[3-(Trimethoxysilyl)Propyl]-W-Hydroxypoly(Oxy-1,2-Ethanediyl) is a specialized organosilicon compound featuring a reactive trimethoxysilyl head group and a hydrophilic poly(ethylene glycol) tail. This unique hybrid structure provides exceptional performance as a coupling agent and surface modifier, bridging inorganic materials and organic polymers. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced material scientists developing functional surfaces and composites.

Application

• Adhesion Promoter in Coatings & Inks: Enhances the bonding of organic polymers to glass, metal, and mineral surfaces, improving durability and corrosion resistance.
• Surface Modifier for Fillers & Pigments: Used to treat silica, glass fibers, and other inorganic fillers to improve their dispersion and compatibility in plastic and rubber matrices.
• Crosslinking Agent for Silicone Polymers: Functions as a moisture-curable component in sealants, RTV silicones, and hybrid polymer systems.
• Primer for Glass & Metal Treatment: Applied as a primer layer to promote adhesion of subsequent coatings or adhesives on difficult-to-bond substrates.
• Compatibilizer in Polymer Blends: Improves the interfacial adhesion between dissimilar polymers, enhancing the mechanical properties of polymer alloys.
• Hydrophilic Surface Modification: The PEG chain imparts hydrophilic character, useful for creating anti-fog, anti-static, or biocompatible surfaces.

Basic Information

Item	Detail
Product Name	A-[3-(Trimethoxysilyl)Propyl]-W-Hydroxypoly(Oxy-1,2-Ethanediyl)
CAS No.	98358-37-3
Molecular Formula	Typically CnH2n+1O4Si (Polymer with variable PEG chain length)
Molecular Weight	Variable (Depends on the number of ethylene oxide units, n)
Synonyms	(3-(Trimethoxysilyl)propyl) polyethylene glycol ether; PEG-silane; Poly(ethylene glycol) (3-(trimethoxysilyl)propyl) ether; Silane-PEG; Hydroxy-terminated poly(ethylene glycol) propyltrimethoxysilane; γ-(Poly(ethylene glycol))propyltrimethoxysilane; Silane coupling agent with PEG tail; Methoxy silane PEG
EINECS	Contact for details

Quality Control

Every batch of our A-[3-(Trimethoxysilyl)Propyl]-W-Hydroxypoly(Oxy-1,2-Ethanediyl) is produced under strict quality management and undergoes comprehensive analytical testing. We ensure consistency in key parameters such as silane content, hydroxyl value, and PEG chain length distribution. A Certificate of Analysis (COA) detailing purity, assay, and other relevant specifications is provided with each shipment to guarantee it meets your application requirements.

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). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and premature condensation of the silane groups.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (Silane Content)	≥ 95.0%
Hydroxyl Value	Variable by grade (mg KOH/g)
Water Content (Karl Fischer)	≤ 0.5%
Viscosity (25°C)	Variable by molecular weight
Specific Gravity (25°C)	~1.05 - 1.10

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