Description

o-(Propargyloxy)-n-(Trimethoxysilylpropyl)Urethane is a specialized organosilane coupling agent featuring a unique urethane linkage and a propargyl ether group. This bifunctional structure is critical for creating durable, high-performance interfaces between organic polymers and inorganic substrates. It is essential for formulators and manufacturers in advanced materials sectors who require enhanced adhesion, crosslinking density, and surface modification. The compound is identified by CAS No. 88489-37-6.

Application

• Adhesion Promoter in high-performance polyurethane, epoxy, and acrylic-based coatings, sealants, and adhesives for metals, glass, and composites.
• Surface Modifier for silica, glass fibers, and other mineral fillers to improve compatibility and dispersion in polymer matrices.
• Crosslinking Agent in moisture-curable resin systems and hybrid organic-inorganic polymers (ORMOSILs).
• Primer Component for automotive, aerospace, and construction applications where long-term durability and corrosion resistance are paramount.
• Fiber Sizing agent for glass and carbon fibers to enhance the interfacial bond in reinforced plastics (FRP/GRP).
• Dental & Medical Materials as a coupling agent in biocompatible composites and restorative materials.
• Electronic Encapsulants and underfill materials to improve adhesion to circuit boards and semiconductor components.
• Research & Development of novel hybrid materials, click chemistry platforms (via the alkyne group), and specialty polymers.

Basic Information

Product Name	o-(Propargyloxy)-n-(Trimethoxysilylpropyl)Urethane
CAS No.	88489-37-6
Molecular Formula	C11H21NO6Si
Molecular Weight	291.38 g/mol
Synonyms	3-(3-(Prop-2-yn-1-yloxy)ureido)propyltrimethoxysilane; (3-(3-(Prop-2-yn-1-yloxy)ureido)propyl)trimethoxysilane; Ureido silane with propargyl ether; Propargyloxy urethane silane; Silane coupling agent Y-6194; γ-Ureidopropyltrimethoxysilane propargyl ether; Trimethoxysilylpropyl propargyl urethane; Alkyne-functional ureido silane
EINECS	Contact for details

Quality Control

Every batch of our o-(Propargyloxy)-n-(Trimethoxysilylpropyl)Urethane is manufactured and tested under a strict quality management system. We ensure product consistency and purity through advanced analytical techniques including NMR, FT-IR, and HPLC. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with each shipment 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 area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container 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 (HPLC)	≥ 97.0%
Refractive Index (n20/D)	1.440 - 1.450
Density (g/mL, 25°C)	1.08 - 1.12
Moisture (Karl Fischer)	≤ 0.5%

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