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3-Acetoxypropyltrimethoxysilane CAS 59004-18-1

3-Acetoxypropyltrimethoxy silane

Chemical Name:3-Acetoxypropyltrimethoxy silane
Alias:3-(trimethoxysilyl)propyl acetate
Product Category:CAS 54004-18-1 Acyloxy Silanes | Silanes
CAS NO.:59004-18-1
Molecular Weight:222.31
Molecular Formula:3-Acetoxypropyltrimethoxy-silane-2
Boiling Point:214°C
Density:1.062±0.005 (ρ20)g/cm3

3-Acetoxypropyltrimethoxy silane Description

3-Acetoxypropyltrimethoxy silane is an acetoxy silane, which all have an acetoxy functional group containing an unsaturated double-bond structure and three hydrolyzable alkoxy (methoxy) groups in the molecular structure, and this dual reactivity allows them to improve the bonding and compatibility between the two through bi-directional chemical reactions with both inorganic materials (glass, metal, fillers) and organic polymers (thermosetting resins, plastics, This dual reactivity allows them to improve the bonding, adhesion and compatibility between inorganic materials (glass, metal, filler) and organic polymers (thermosetting resins, plastics, elastomers) through a two-way chemical reaction with the two, thus improving the mechanical properties of resin-based composites, or improving the adhesive strength of resin coatings and water resistance and other properties.

The product can also be copolymerized with monomers such as acrylic acid, methacrylic acid, vinyl acetate, styrene, etc. containing unsaturated double bonds, thereby imparting moisture curing, good adhesion, water resistance, etc. to the copolymer. In different applications, they can be used as coupling agents, adhesion promoters, cross-linking agents, surface modifiers for pigment fillers, silicone-modified graft copolymerization monomers, and so on.
Product Name3-Acetoxypropyltrimethoxy silane
Synonyms3-(trimethoxysilyl)propyl acetate
Boiling point214°C
Density1.062±0.005 (ρ20)g/cm3
Refractive index1.415±0.005 (n25D)
AppearanceColorless Transparent liquid, soluble in a variety of organic solvents
Package5kg/drum, 20kg/ctn. Sealed and stored in a cool, dry and ventilated place, moisture-proof and water-proof, away from fire and heat source.
  • This product can improve the glass fiber reinforced and containing inorganic fillers of thermosetting and thermoplastic resins mechanical and electrical properties, especially those cured by the reaction of the active free radical mechanism of thermosetting resins (such as unsaturated polyester, polyurethane and acrylate), peroxide vulcanized rubber (EPR, EPDM, silicone rubber, etc.) and thermoplastic resins (including polyolefins and thermoplastic polyurethane).
  • This product can significantly improve the inorganic filler-filled unsaturated polyester composite materials (such as cast or die-cast artificial quartz stone, etc.) of the dry and wet mechanical strength and electrical properties.
  • The product can be copolymerized with vinyl acetate, acrylic acid or methacrylic acid monomer to synthesize silane-modified polymers that can be crosslinked and cured at room temperature. These polymers are widely used in coatings, adhesives and sealants to provide excellent adhesion and durability.

Packaging Specifications

Packaging Specifications
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3-Acetoxypropyltrimethoxy silane: Guide

The hydrolysis of 3-Acetoxypropyltrimethoxy silane requires the use of organic acids (e.g., formic acid, acetic acid, etc.) as a catalyst, specifically by adjusting the pH of the water to about 3.5-4.5, and then adding CAS 59004-18-1silane and stirring for a period of time (at least 30 minutes or more) until the silane is completely dissolved and the solution is clear and transparent.

Their hydrolysates are unstable and it is recommended to use them up within 24 hours. Fogging of the solution indicates that the silane has partially self-polymerized to form a polymer of silane (silicone) and become ineffective.
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