Silicone additives for Spray foam/Silicone spray foam XH-1690

short description:

WynPUF® is our brand of silicone regulator for PU. Silicone foam control selection is important when developing open-cell and closed-cell spray systems. XH-1690 help to create the performance advantages you need. Silicone surfactant for spray foam is used in a variety of applications, from basement and attic insulation to acoustic insulation and soundproofing. It is also used to fill gaps in walls and ceiling, providing a tight seal to prevent air and moisture from entering the structure. Spray foam can be used to protect pipes from freezing during cold weather.

XH-1690 is equal to L-6950, B-8518 in international markets

Product Detail

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Product Details

XH-1690 foam stabilizer is a Si-C bone, non-hydrolytic type polysiloxane polyether copolymer. This is a versatile foam stabilizer used for the production of polyurethane rigid foam plastic used in appliances and construction industry. It is suitable as general-purpose surfactant for other rigid foam applications and with different blowing agents including iso- cyclo pentane, HCFC-141B and high-water content foaming system.

Physical Data

Appearance: Yellow-color clear liquid

Viscosity at 25°C:600-1000CS

Moisture: 0.2%


• Suitable for use in systems for refrigeration, lamination and pour-in-place foam applications, using hydrocarbons as blowing agents and co-blown with water

• Provides good solubility of cyclo-pentane and cyclo/iso-pentane mixtures in the typical polyol formulations used in the applications industry.

• Delivers extremely fine celled foams, thus obtaining foams with very good thermal insulation performances.

• Stabilization of foam growth in pour-in-place applications, in systems using CH, water and HCFC-141b as blowing agents as well as HFCs. 

Levels of Use (additive as supplied)

The common level range for XH-1690 is 1.5 to 2.5 parts per hundred of polyol (php).

Package and storage stability

Available in 200kg drums.

24 months in closed containers.

Product Safety

When considering the use of any TopWin products in a particular application, review our latest Safety Data Sheets and ensure that the use intended can be accomplished safely. For Safety Data Sheets and other product safety information, contact the TopWin sales office nearest you. Before handling any of the products mentioned in the text, please obtain available product safety information and take necessary steps to ensure safety of use.

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