Description

Vinylphenyldiethoxysilane is a specialized organosilicon compound featuring both vinyl and phenyl functional groups. This unique bifunctional structure makes it a highly effective coupling agent and surface modifier, crucial for enhancing the adhesion and compatibility between organic polymers and inorganic substrates. It is essential for manufacturers in the advanced materials, coatings, and electronics industries seeking to improve the mechanical properties and durability of their composite products. The compound is supplied under strict quality control to ensure consistent performance in demanding applications.

Application

• Coupling Agent for Reinforced Composites: Used to treat glass, silica, and other mineral fillers to improve their bonding with polymer matrices like epoxy, phenolic, and polyimide resins.
• Surface Modification of Nanoparticles: Imparts organic functionality to inorganic nanoparticles (e.g., silica, titania) for better dispersion in solvents and polymer systems.
• Adhesion Promoter in Coatings and Sealants: Enhances the adhesion of silicone-based and other polymeric coatings to difficult substrates such as metals, glass, and plastics.
• Precursor for Silicone Resins and Polymers: Serves as a key monomer in the synthesis of specialty phenylvinyl silicone resins with tailored thermal and optical properties.
• Fiber Sizing for High-Performance Composites: Applied as a sizing agent on carbon or glass fibers to optimize the fiber-matrix interface in aerospace and automotive composites.
• Electronic Encapsulants and Underfills: Improves the reliability of microelectronic devices by enhancing the adhesion and stress relief of silicone encapsulants.

Basic Information

Product Name	Vinylphenyldiethoxysilane
CAS No.	40195-27-5
Molecular Formula	C12H18O2Si
Molecular Weight	222.36 g/mol
Synonyms	Phenylethenyldiethoxysilane; Diethoxy(phenylvinyl)silane; Diethoxy(vinylphenyl)silane; Vinylphenyldiethoxysilane; (Ethenylphenyl)diethoxysilane; Phenylvinyldiethoxysilane; Silane, diethoxy(phenylvinyl)-; A 2171 (Momentive trade name); KBE 103 (Shin-Etsu trade name)
EINECS	254-897-5

Quality Control

Our Vinylphenyldiethoxysilane is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, clarity, and moisture content. We are committed to supplying material that delivers consistent performance for your critical formulation and R&D 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). This material is hygroscopic (moisture-sensitive); containers 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	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.98 - 1.02 g/mL
Refractive Index (n20D)	1.485 - 1.495
Water Content (Karl Fischer)	≤ 0.2%

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