Silicone Water Repellent Silway732


Silway 732  is 100% methyl hydrogen siloxane. As there are relatively active Si-H bonds in the molecule, under the action of catalysts it can react with chemicals containing active groups, such as double bonds or hydroxyl groups.

Silway 732 water repellent can be converted into film and produce a resilient waterproof coating on various substrates by catalyst at low temperature. Therefore, Silway 732 water repellent has the outstanding property which prevents moisture, mildew and rust.

Besides, Silway 732 water repellent has a high permeability to water vapor, allowing the material to breathe.

Typical Applications

•As a surface treatment in applications that utilize its ability to impart a water repellent surface and reduce water absorption

•For use on powders, glass, ceramic, leather, paper,metal, cement and marble

Key Features

•Reduces water absorption into the substrate, thus reducing spalling due to freeze-thaw and efflorescence, thereby increasing the life of the substrate


•Produces a durable film aftercuring

•Curing time and curing temperature can be adjusted

•Effective concentration as low as 0.2%

Typical Physical Properties




Colorless Transparent

Viscosity (cSt, 25℃)


Hydrogen Content, %


PH Value


Volatile Content

(150 ℃, 3h, %)


Flash Point



•Silway 732 is usually applied from dilute

•Solutions are prepared by diluting Silway 732 with hydrocarbon solvents, acetone or methyl ethyl ketone, and stirring the mixture gently until uniform.

•The extent of dilution will dependon the surface to be treated and surface properties 

•Curing times are much shorter at higher curing

•Catalysts are often used to accelerate cure.


Packing :200L or 1000L drums or according to customer request.


• Avoid children coming into contact with this product

• Being storage in closed containers

• No fire on the construction site

Shelf Life :12 months





The Way of Silicone Innovation

Hangzhou Silway New Material Technology Co.,Ltd. Founded in 2014, is a young but fast-growing Silicone Water Repellent Silway732 manufacturer specialized in the research, development, production and marketing of Silicone Water Repellent Silway732.

Silway focused on the modified siloxane and formulation technology, product line covers from agricultural silicone adjuvant, silicone water repellent, cosmetic silicones, sealant & additive, modified siloxane for die-casting.etc.

  • R&D

    Founders have over 20 years’ technical experience in silicone industry

  • Quality

    ISO9001 Certificated

  • Service

    Sales for international market all have at least 5 years experience, easy to communicate and professinal in silicone industry.

  • OEM

    Offer OEM service and customized products.

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Silicone Water Repellent Silway732 Industry Knowledge Extension