Organofunctional Silane Coupling Agent Vinyltriethoxysilane (CAS No. 78-08-0)

Abstract
Vinyltriethoxysilane (CAS No. 78-08-0), silane coupling agent SCA-V71E, is a bifunctional organosilane possessing a reactive vinyl group and a hydrolyzable inorganic triethoxysilyl group. The dual nature of its reactivity allows SCA-V71E to bind chemically to both inorganic materials (e. G. Glass, metals, fillers) and organic polymers (e. G. Thermosets, thermoplastics, elastomers), thus functioning as a crosslinking agent, adhesion promoter and/or surface modifier.
SCA-V71E is a colorless, low-viscosity liquid with a typical aromatic odor.

Identification
Name Vinyltriethoxysilane
Synonyms (Triethoxysilyl)ethylene; Ethenyltriethoxysilane; Triethoxy(vinyl)silane
Molecular Formula C8H18O3Si
Molecular Weight 190.31
CAS Registry Number 78-08-0
EINECS 201-081-7

Equivalents
Momentive (formerly OSi Specialties ) Silquest A-151
Dow Corning Z-6518
ShinEtsu KBE-1003
EVONIK Degussa Dynasylan VTEO
Wacker GENIOSIL GF 56
Chisso Sila-Ace S220
UCT Specialties (formerly Petrarch) V4910

Properties
Density 0.903
Boiling point 160 C degree
Refractive index 1.395
Flash point 44 C degree
Water solubility REACTS

Application
Vinyltriethoxysilane (CAS No. 78-08-0), silane coupling agent SCA-V71E, is an important additive for many applications. Examples are:
1\Emulsion polymerization: As a monomeric vinyl functional silane in vinyl, vinyl acrylic and acrylic resin, this vinyl silane can be added as monomers during emulsion during polymerization to form silane modified latexes. The silane in such latexes functions as crosslinkers, forming very stable Si-O-Si chain.
2\Silane crosslink polymers: This vinyl silane can also grafted to select unsaturated polymers such as PE, PET and Styrene-Butadiene co-polymer, via moisture cure mechanism. These vinyl silane crosslinked polymers represent good resistant to high temperature and excellent mechanic strength.
3\Adhesives, sealants and hot melt: Excellent adhesion to a wide range of inorganic substrates such as metal, glass and concrete, the suitable resins include acrylic, vinyl and vinyl acrylic.