Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
ADDSiL™ 11320
ADDSiL™ 11320

Silicone Surfactant for Rigid Foam

ADDSiL™ 11320 surfactant is a non-hydrolysable silicone glycol copolymer for manufacturing of rigid polyurethane foams.

It is designed for HCFC-141b and Pentane blown polyurethane foams

ADDSiL™ 11320

Technical Data


Transparent viscous liquid

Viscosity 25°C

1200+/-250 mPa.s

Density 25°C

1.05+/-0.02 g/cm3


Max. 0.3%

pH (1% water solution)



  • ADDSiL™ 11320 provides uniform density and highly closed cellular structures and therefore insulation and mechanical strength. The combined effect on fine cells and flow can deliver foams with constantly low thermal conductivities in all areas of the foamed refrigerator cabinet improving the overall potential energy savings.

  • ADDSiL™ 11320 silicone based surfactant brings very good fluidity during the entire foaming process in the reaction system, extremely increasing the adhesive strength of polyurethane foam.

  • ADDSiL™ 11320 is suitable in premixed polyol manufacture, especially well used in producing refrigerator and heat insulation materials.

  • ADDSiL™ 11320 silicone surfactant for PU rigid foam by SiSiB provides extremely fine cells and therefore low thermal conductivity.

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

Packing and Storage

  • ADDSiL™ 11320 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™ 11320 is supplied in net weight 200Kg steel drum or 1000Kg IBC tote.

  • When stored at ambient temperature in the original unopened packing, ADDSiL™ 11320 has a shelf life of 12 months from the date of production.

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ADDSiL™ 11320