Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
ADDSiL™ 11220
ADDSiL™ 11220

Silicone Surfactant for Rigid Foam

ADDSiL™ 11220 silicone surfactant is a non-hydrolytic polyether polydimethylsiloxane copolymer with high activity.

It is designed for HCFC-141b and cyclopentane blown polyurethane foams; it provides strong nucleation and low thermal conductivity.

ADDSiL™ 11220

Technical Data


Transparent viscous liquid

Viscosity 25°C

1200+/-250 mPa.s

Density 25°C

1.04+/-0.03 g/cm3


< 0.3%

Freezing point

< 0 °C

pH (1% water solution)



  • ADDSiL™ 11220 silicone surfactant for PU rigid foam provides very good fluidity during the entire foaming process in the reaction system and produce homogeneous density distribution.

  • ADDSiL™ 11220 silicone based surfactant provides excellent nucleation ability. Very fine cells and flow can deliver foams with constantly low thermal conductivities in all areas of the foamed refrigerator cabinet.

  • The recommended concentration of this product is 2% to 3% of polyol (php).

Packing and Storage

  • ADDSiL™ 11220 surfactant will become hazy when stored at temperatures below 20°C and will solidify to a soft silicone wax at temperatures below 10°C. The product should be warmed to room temperature and stirred before use.

  • ADDSiL™ 11220 is supplied in net weight 200Kg steel drum or 1000Kg IBC tote.

  • When stored at ambient temperature in the original unopened packing, ADDSiL™ 11220 has a shelf life of 12 months from the date of production.

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