Description

o-(Propargyloxy)-n-(Triethoxysilylpropyl)Urethane is a specialized organosilane coupling agent that integrates a urethane linkage with a reactive propargyl ether group. This unique bifunctional structure is critical for creating high-performance, cross-linked polymer networks and surface modifications. It is primarily needed by manufacturers in the adhesives, sealants, coatings, and advanced composite materials industries seeking to enhance material durability and interfacial adhesion.

Application

• As a key cross-linking agent and adhesion promoter in high-strength structural adhesives and sealants.
• Surface modification of inorganic fillers (e.g., silica, glass) to improve compatibility and dispersion in polymer matrices for composites.
• Formulation of specialty coatings and resins with enhanced chemical resistance, thermal stability, and mechanical properties.
• Development of moisture-curable systems where the triethoxysilyl group enables curing upon exposure to atmospheric humidity.
• As a reactive intermediate in the synthesis of advanced silane-functionalized polymers and hybrid organic-inorganic materials.
• Research and development of novel materials for electronics encapsulation and protective coatings.

Basic Information

Product Name	o-(Propargyloxy)-n-(Triethoxysilylpropyl)Urethane
CAS No.	870987-68-1
Molecular Formula	C15H29NO6Si
Molecular Weight	347.48 g/mol
Synonyms	3-(Triethoxysilyl)propyl (2-propynyloxy)carbamate; Ureido silane with propargyl ether; Propargyloxy urethane triethoxysilane; (3-Triethoxysilylpropyl)carbamic acid propargyl ester; Silane coupling agent 870987-68-1; N-(Triethoxysilylpropyl)-O-propargyl urethane; CAS 870987-68-1
EINECS	Contact for details

Quality Control

Our production of o-(Propargyloxy)-n-(Triethoxysilylpropyl)Urethane adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot undergoes comprehensive analysis, including assay and purity verification by techniques such as NMR and HPLC. 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 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 degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.430 - 1.450
Density (g/mL, 20°C)	1.05 - 1.10

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