Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
ADDSiL™ 11720
ADDSiL™ 11720

Silicone Surfactant for Rigid Foam

ADDSiL™ 11720 surfactant is a non-hydrolytic, isocyanate-compatible foam stabilizer with high activity. It is a copolymer of polysiloxane and polyether which mainly used for the production of polyurethane rigid foam plastic.

ADDSiL™ 11720

Technical Data


Transparent viscous liquid

Viscosity 25°C

400+/-150 mPa.s

Density 25°C

1.04+/-0.02 g/cm3


Max. 0.3%


  • ADDSiL™ 11720 by SiSiB can be used to stabilize formulations where an isocyanate-compatible product is desired.

  • ADDSiL™ 11720 PU silicone surfactant is efficient in one component foam and sandwich panel.

  • ADDSiL™ 11720 silicone surfactant can be used with cell opener to make foam have good dimensional stability.

  • Recommended use levels are 1.0~2.5 pphp. The optimum surfactant loading should be defined for the particular foam formulation

Packing and Storage

  • ADDSiL™ 11720 surfactant will become hazy when stored at temperatures below 20°C and will solidify to a soft silicone wax at temperatures below 0°C. The product should be warmed to room temperature and stirred before use.

  • ADDSiL™ 11720 is supplied in net weight 200Kg steel drum or 1000Kg IBC tote.

  • When stored at ambient temperature in the original unopened packing, ADDSiL™ 11720 has a shelf life of 12 months from the date of production.

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