Description

4-[2-(Triethoxysilyl)Vinyl]Benzocyclobutene is a specialized organosilicon monomer featuring a benzocyclobutene (BCB) moiety and a reactive triethoxysilyl group. This unique bifunctional structure makes it a critical precursor for synthesizing high-performance polymers and advanced hybrid organic-inorganic materials. It is essential for R&D and production in industries requiring materials with exceptional thermal stability, low dielectric constants, and strong adhesion properties.

Application

• Advanced Polymer Synthesis: Key monomer for polybenzocyclobutenes (PBCBs) and other high-temperature thermosetting resins used in microelectronics and aerospace.
• Semiconductor Packaging: Used in dielectric coatings, stress buffer layers, and as an adhesion promoter in flip-chip and wafer-level packaging due to its low dielectric constant and planarization properties.
• Surface Modification & Coupling Agent: The triethoxysilyl group enables covalent bonding to inorganic surfaces (glass, silica, metals), making it valuable for creating functionalized coatings and composite materials.
• Optoelectronics & Photonics: Serves as a building block for polymers used in waveguides, optical interconnects, and other passive optical components.
• Adhesive Formulations: Imparts high thermal and chemical resistance to specialty adhesives and encapsulants for demanding environments.
• Hybrid Material Research: Fundamental reagent in sol-gel chemistry for developing novel organic-silica hybrids with tailored mechanical and thermal properties.

Basic Information

Product Name	4-[2-(Triethoxysilyl)Vinyl]Benzocyclobutene
CAS No.	124389-79-3
Molecular Formula	C17H26O3Si
Molecular Weight	306.48 g/mol
Synonyms	4-Vinylbenzocyclobutene-2-triethoxysilane; 2-(4-Benzocyclobutenyl)ethenyltriethoxysilane; BCB-VTES; (4-Vinylbenzocyclobutyl)triethoxysilane; 4-(2-Triethoxysilylvinyl)benzocyclobutene; 1,2-Dihydro-4-[2-(triethoxysilyl)ethenyl]benzocyclobutene; Vinylbenzocyclobutene triethoxysilane; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our production of 4-[2-(Triethoxysilyl)Vinyl]Benzocyclobutene adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for sensitive applications. Each lot is characterized using advanced analytical techniques including NMR, GC, and HPLC. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key specifications is provided with every 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 place at room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.490 - 1.510
Density (20°C)	1.00 - 1.05 g/mL

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