Description

n-(1-Phenylethylidene)-3-(Triethoxysilyl)Propylamine is a specialized organosilane coupling agent featuring a unique aromatic imine functional group. This bifunctional structure is critical for creating durable chemical bridges between inorganic substrates and organic polymer matrices, significantly enhancing composite material performance. It is essential for manufacturers in the advanced composites, adhesives, and coatings industries seeking to improve interfacial adhesion, mechanical strength, and long-term durability in demanding environments.

Application

• Silane Coupling Agent for Reinforced Plastics & Composites: Enhances the bond between glass or mineral fillers and polymer resins like epoxy, phenolic, or polyurethane, improving mechanical properties and moisture resistance.
• Surface Primer & Adhesion Promoter for Coatings: Used as an additive in primers or directly incorporated into paint and coating formulations to promote adhesion on difficult substrates such as metals, glass, and treated plastics.
• Filler Treatment in Rubber & Tire Manufacturing: Modifies the surface of silica and other fillers to improve dispersion, reduce viscosity, and enhance the abrasion resistance and dynamic mechanical performance of elastomeric compounds.
• Fiber Sizing for High-Performance Composites: Applied as a sizing or finish on glass, carbon, or aramid fibers to protect filaments and optimize the fiber-matrix interface in aerospace and automotive composite parts.
• Sealant & Adhesive Formulation: Acts as a crosslinking agent and adhesion promoter in high-performance silicone, MS polymer, and polyurethane sealants and adhesives.
• Mineral & Pigment Modification: Treats the surface of minerals and pigments to improve their compatibility and stability within various polymer systems.

Basic Information

Product Name	n-(1-Phenylethylidene)-3-(Triethoxysilyl)Propylamine
CAS No.	67674-60-6
Molecular Formula	C17H29NO3Si
Molecular Weight	323.51 g/mol
Synonyms	3-(Triethoxysilyl)-1-propanamine, N-(1-phenylethylidene)-; N-[3-(Triethoxysilyl)propyl]benzylideneamine; N-(Phenylethylidene)-3-(triethoxysilyl)propylamine; N-Benzylidene-3-(triethoxysilyl)-1-propanamine; Silane AY 43-306 (Trade Name); Benzylidene(3-triethoxysilylpropyl)amine; γ-(Benzylideneamino)propyltriethoxysilane; Coupling Agent Si-304 (Common Industry Designation)
EINECS	Contact for details

Quality Control

Our production of n-(1-Phenylethylidene)-3-(Triethoxysilyl)Propylamine adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including assay, identity confirmation, and impurity profiling, to ensure consistency and compliance with agreed specifications. Certificates of Analysis (COA) documenting purity, physical properties, and other critical parameters are provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, pale yellow to amber liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 95.0%
Refractive Index (n20/D)	1.470 - 1.480
Density (g/mL, 25°C)	0.98 - 1.02

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