Description

n-(Triethoxysilylpropyl)-o-Polyethylene Oxide Urethane is a specialized organosilane coupling agent with a unique hybrid structure combining a hydrolysable triethoxysilyl group with a hydrophilic polyether urethane chain. This compound is engineered to create durable covalent bonds between inorganic substrates and organic polymer matrices, significantly enhancing adhesion, compatibility, and mechanical performance. It is a critical material for formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced composites and surface modification technologies where robust interfacial bonding is required.

Application

• Adhesion Promoter: Primarily used to dramatically improve the adhesion of polyurethane, epoxy, and acrylic-based coatings, adhesives, and sealants to glass, metals, and mineral surfaces.
• Surface Modification Agent: Imparts permanent hydrophilicity, anti-fog properties, and improved wettability to glass, silica, and other inorganic particles for use in optical, cosmetic, and filler applications.
• Composite Coupling Agent: Enhances the dispersion, interfacial bonding, and stress transfer between inorganic fillers (e.g., glass fibers, minerals) and organic polymer matrices in advanced composites.
• Crosslinking Agent: Functions as a moisture-curable crosslinker in polymer formulations, contributing to improved network density, solvent resistance, and durability of the final product.
• Biomaterial Modification: Used to create biocompatible surfaces on medical devices and implants by grafting poly(ethylene oxide) segments to reduce protein adsorption and cell adhesion.
• Textile Finishing: Applied to fabrics to provide durable softness, moisture management, and stain resistance through covalent bonding to fiber surfaces.

Basic Information

Product Name	n-(Triethoxysilylpropyl)-o-Polyethylene Oxide Urethane
CAS No.	37251-86-8
Molecular Formula	Contact for details
Molecular Weight	Variable (depends on PEO chain length)
Synonyms	3-(Triethoxysilyl)propyl carbamoyl poly(ethylene oxide)
Poly(ethylene glycol) mono[3-(triethoxysilyl)propyl] ether carbamate
PEG-silane urethane
Silane-terminated poly(ethylene oxide) urethane
Hydrophilic silane coupling agent
γ-Ureidopropyltriethoxysilane polyether derivative
Ureido-silane poly(ethylene glycol)
EINECS	Contact for details

Quality Control

Our n-(Triethoxysilylpropyl)-o-Polyethylene Oxide Urethane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including verification of silane content, polyether chain length distribution, moisture content, and purity. Certificates of Analysis (COA) detailing specific batch results are provided and can be tailored to meet customer-specific requirements and relevant industry standards.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and premature condensation. Keep away from strong acids and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (Silane Content)	≥ 95.0%
Moisture (Karl Fischer)	≤ 0.5%
Specific Gravity (25°C)	~1.05 - 1.10
Refractive Index (n20D)	~1.440 - 1.450
Viscosity (25°C)	Variable; grade-dependent

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