Home » Products » Organofunctional Silanes » Acryl Silane » 3-Methacryloxypropyltriethoxysilane



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  • SCA-R74E 

  • SCA-R74E 

  • 21142-29-0

1.Product Introduction of the 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0) 

3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0), Our model SCA-R74E (equivalent to Silquest® Y-9936,Z-6036), is a methacryloyloxysilane, its molecular structure has a methacryloyloxy functional group containing unsaturated double bond structure and three hydrolyzable alkoxy groups-ethoxy, This dual reactivity allows the two-way chemical reaction with inorganic materials (glass, metals, fillers) and organic polymers (thermosetting resins, plastics, elastomers) to increase the degree of bonding, adhesion and compatibility between the two , And further improve the mechanical properties of resin-based composite materials or improve the adhesive strength and water resistance of resin coatings. At the same time, this product can also be copolymerized with acrylic, methacrylic, vinyl acetate, styrene and other monomers containing unsaturated double bonds to give the copolymer moisture curing and good adhesion and water resistance. In different applications, it can be used as coupling agent, adhesion promoter, crosslinking agent, surface modifier of pigment and filler, silicone modified graft comonomer, etc.

2. Product Parameter (Specification) of the 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0)




Yellowish to colorless, transparent liquid

Specific Gravity (ρ20), g/cm3


Boiling Point (760mmHg), ℃


Refractive Index



Soluble in most aliphatic solvents such as aromatics, alcohols, ketones, etc., slightly soluble in water, but will hydrolyze, and the hydrolysate is unstable.

3.Application of the 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0):

1. This product can improve the mechanical and electrical properties of glass fiber-reinforced and inorganic filler-containing thermosetting and thermoplastic resins, especially those thermosetting resins (such as unsaturated polyesters, polyurethanes and acrylates) cured by reactive free radical mechanism reaction. , Peroxide vulcanized rubber (EPR, EPDM, silicone rubber, etc.) and thermoplastic resin (including polyolefin and thermoplastic polyurethane).

2. This product can significantly improve the dry and wet mechanical strength and electrical properties of unsaturated polyester composite materials filled with inorganic fillers (such as cast or die-cast artificial quartz stone, etc.).

3. This product can be copolymerized with vinyl acetate, acrylic or methacrylic monomers to synthesize silane-modified polymers that can be cross-linked and cured at room temperature. Such polymers are widely used in coatings, adhesives and sealants to provide excellent adhesion Relay and durability.

4.Packing Details of the 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0):

The regular packing of 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0) is 25kg plastic pail, 200L steel drums and 1000L immediate bulk container.

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5. Storage and Shelf Life of 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0)

Should be stored in dry, cool, ventilated room; keep away from water, moisture, high temperature and fire. This product has a shelf life of at least 12 months if stored in tightly closed original container at room temperature.

If this product is kept beyond the shelf life recommend on the product label, it is not necessarily unusable, but a quality control should be performed on the properties relevant to the application.

6. Deliver,Shipping And Serving of the 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0)

Based on the quantity of 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0), we can delivery you by sea, by air and by express.


Q1what is the purity we can supply?

A1:For 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0), we can supply 97%and 98% purity.

Q2.what are the equivalents of some other silane manufacturers?

A2:The equivalents of 3-Methacryloxypropyltriethoxysilane(CAS:21142-29-0), please see the list as below:



Silquest® Y9936

Momentive (formerly OSi Specialties)


Dow Corning



Nanjing, Jiangsu,China
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