Silane Coupling Agent

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3-Acryloxypropyltrimethoxysilane

Chemical Name:	3-Acryloxypropyltrimethoxy silane
Product Category:	Acyloxy Silanes \| Silane Coupling Agent
CAS NO.:	4369-14-6
Formula:	C₉H₁₈O₅Si
EINECS:	419-560-6
Molecular Weight:	234.32
Purity:	99%
Appearance:	Colorless transparent liquid
Boiling Point:	240°C
Density:	1.0550 ± 0.0050 (ρ20)g/cm3

3-Acryloxypropyltrimethoxysilane Description

3-Acryloxypropyltrimethoxysilane (CAS 4369-14-6) is commonly used to enhance thermal conductivity in silicone rubber filled with hybridized fillers. It plays a key role in the synthesis of vinyl and acrylate-modified silica nanoparticles, using vinyltrimethoxysilane. Additionally, it serves as a silane coupling agent for the carbon-carbon double bond modification of fluorescein isothiocyanate-modified mesoporous silica nanoparticles.

Product Name	3-Acryloxypropyltrimethoxy silane
Synonyms	3-allyloxypropyltrimethoxy silane, 3-trimethoxysilane propyl acrylate, 3-(acryloyloxy) propyltrimethoxysilane, 3-(trimethoxysilyl)propyl acrylate, 3-(acryloyloyloxy) propyltrimethoxysilane, 3-trimethoxysilylpropyl acrylate, 3-trimethoxysiloxypropyl acrylate, 3-trimethoxysilylpropyl acrylate
Boiling point	240°C
Density	1.0550 ± 0.0050 (ρ20)g/cm3
Refractive index	1.4260 ± 0.0050 (n25D)
Applications	Fiberglass \| Adhesives \| Resins \| Plastics \| Fillers \| Coatings
Package	5kg/drum, 20kg/ctn. Sealed and stored in a cool, dry and ventilated place, moisture-proof and water-proof, away from fire and heat source.
Usage	Used in unsaturated polyester composites: It can improve the mechanical properties, electrical properties and light transmission properties of composites, especially it can greatly improve the wet state properties of composites. With (containing the coupling agent) infiltration treatment of glass fiber, can improve the glass fiber reinforced composite material wet state mechanical strength and electrical properties. Applications in the wire and cable industry: treating clay-filled peroxide crosslinked EPDM systems with the coupling agent improves the consumption factor and the specific inductive capacity resistance. Copolymerized with vinyl acetate and acrylic or methacrylic monomers, these polymers are widely used in coatings, adhesives and sealants to provide excellent adhesion and durability.

Packaging Specifications

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3-Acryloxypropyltrimethoxysilane: Guide

3-Acryloxypropyltrimethoxysilane (CAS 4369-14-6) is primarily used as a tackifier for resins and polymer materials, as well as in the synthesis of methacryloyloxyalkyl silicone oils. It serves as a cross-linking agent for room temperature curing acrylic coatings and polyolefin methods, enhancing hydrophobicity in insulating oils and fiber optic coatings. Additionally, it improves the mechanical properties of polyester concrete.

CAS 4369-14-6 silane is widely utilized in coating and adhesive formulations, particularly for UV curing and epoxy systems, acting as a coupling agent for glass fibers, plastics, and artificial marble. It also plays a key role in the surface modification of thermoset fillers, pigments, plastics, thermoplastics, and elastomers.