Vinyl Silane Coupling Agent Crosile® 171

Crosile® 171 Vinyltrimethoxysilane is a silane coupling agent with a Vinyl and hydroxyl groups that can be used to enhance the wettability and improve the superhydrophobic characteristics of different composites.

Item NO.:
Crosile® 171
EINECS No:
220-449-8
CAS No.:
2768-02-7
Chemical Formula:
CH2=CHSi(OCH3)3
Properties:
Colorless or yellowish transparent liquid, soluble in organic solvents such as alcohol, toluene, propanone, benzene, etc., hydrolyze in acidic aqueous

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Vinyl Silane Coupling Agent Crosile® 171

Adhesion Promoter or Water Scavengers

Chemical Structure

Vinyltrimethoxysilane (VTMO)

CAS 2768-02-7

Chemical Properties

Crosile® 171 Vinyltrimethoxysilane is a silane coupling agent that contains vinyl and hydroxyl groups. It can be effectively utilized to enhance the wettability and improve the superhydrophobic characteristics of different composites.

Synonyms Name (Equivalent Grade)

(Trimethoxysilyl)ethylene, Trimethoxy(vinyl)silane, Trimethoxy(vinyl)silane, Vinylmethyltrimethoxysilane, Vinyltrimethoxysilane, Trimethoxysilyl)ethylene, Vinyl teimethoxy silane,

Specifications

Properties	Units	Target Values(Spec, Limits)	Typical Value
Appearance	----	Colorless Liquid	Coloress Liquid
Crosile® 171 Content	%(wt)	>98%	99.65
Density(p20) g/cm3	g/cm3	0.9700+/_0.0050	0.9708
Refractive Index(25°C)	---	1.3930+/_0.0050	1.392
Ethyltrimethoxysilane Content	%	1.0	0.23
Methanol Content	%	1.0	0.01
Chlorine Content	%	Max 10ppm	5ppm
Boiling Point	°C	122-123°C	123

Application

Production of Modified Polyethylene: Vinylsilane Crosile® 171 is used as a monomer for producing modified polyethylene with different densities and co-polymer structures. It allows the fine-tuning of the final properties of the polymer, such as block-copolymer with a comb structure or linear structure.
Cable Shields and Electrical Resistances: The modified polymers derived from Vinylsilane Crosile® 171 find applications in cable shields and electrical resistances. These materials offer improved properties suitable for electrical insulation in certain types of cables and water pipes in under-floor heating installations.
Cross-Linking Agent for Polyethylene: Vinyl Silane Crosile® 171 is used as cross-linking agents in the manufacturing of cross-linked polyethylene (PEX). The alkoxysilane moiety in Vinylsilane reacts with water, forming silicon-oxygen-silicon bonds that cross-link the material and cure it. Moisture-curable polymers, including PEX, are commonly used as electrical insulation and in water pipe applications.
Coupling Agent/Adhesion Promoter: Vinylsilane Crosile® 171, along with amino-functional and epoxy-functional silanes, serves as a coupling agent or adhesion promoter. It is used for treating glass fibers and particulate minerals to enhance their bonding strength with resin. The silane group in Vinylsilane forms a covalent Si-O-Si bond with the glass substrate, while the resin reacts with the vinyl group, amino group, or epoxy group, leading to stronger bonds and improved mechanical properties in fiberglass production.