PU Foams

We offer a range of Silicone Surfactants for polyurethane systems on behalf of Concentrol®.

HR Flexible Polyurethane Foam
Concentrol® Grade HR MDI HR TDI/MDI HR TDI Stabilising Efficiency Additional Information
STB PU-1220 +++ ++ (co-surf) + (co-surf) Low Cell regulating surfactant. Low potency MDI surfactant, very wide processing latitude for open foams.
STB PU-1230 +++ ++ (co-surf) + (co-surf) Low Cell regulating surfactant. Cell regulation surfactant, open foams with very good crushability and wide processing latitude.
STB PU-1231 +++ ++ (co-surf) + (co-surf) Low Cell regulating surfactant. Standard silicone surfactant for MDI foam, low VOC and broad processing latitude for open foams.
STB PU-1234 +++ ++ (co-surf) + (co-surf) Low-medium Cell regulating surfactant. Standard silicone surfactant for MDI foam with very low VOC contribution, wide processing latitude for open foams.
STB PU-1235 +++ +++ (co-surf) ++ (co-surf) Medium Cell regulating surfactant. Silicone surfactant for MDI foam with extra low VOC contribution. Cellular regulation with wide processing latitude for open foams.
STB PU-1270 +++ +++ (co-surf) ++ (co-surf) Medium Cell regulating surfactant. Cell regulation with medium stabilizing effect, very wide processing latitude for less stable MDI systems and TDI/MDI foams.
STB PU-1239 +++ +++ (co-surf) ++ (co-surf) Medium Cell regulating surfactant. Cell regulation surfactant with medium stabilizing effect, for seating as well as sound absorbing mats.
STB PU-1240 ++ (co-surf) +++ ++ (co-surf) Low-Medium Cell regulating surfactant. Low medium potency TDI, also used as co-surfactant regulation at lower usage levels.
STB PU-1251 ++ (co-surf) +++ +++ Medium Stabilising Surfactant. Medium potency TDI surfactant, also used as cosurfactant at low dosage for MDI/TDI systems.
STB PU-1250 ++ (co-surf) ++ +++ Medium Stabilising Surfactant. Medium potency surfactant with wide processing latitude for TDI foams.
STB PU-1253 + ++ +++ Medium-High Stabilising Surfactant. Medium potency TDI surfactant, with good surface regulation.
STB PU-1254 + ++ +++ High Stabilising Surfactant. Low VOC TDI surfactant with broad processing latitude. Foam stabilizer with good surface regulation.
STB PU-1255 + ++ +++ High Stabilising Surfactant. Low VOC TDI surfactant, prevents foam defects such as coarse cell structure and voiding beneath the foam surface.
STB PU-1256 - - +++ High Stabilising Surfactant. Strong TDI stabilizer. Can be used as a sole surfactant (high polymer solids systems), or for more open foams, in combination with a cell regulator (STB PU-1257)
STB PU-1257 - ++ +++ (co-surf) High Stabilising Surfactant. Strongest cell regulator (sub-surface void reduction), with only moderate stabilizing effect.
STB PU-1259 ++ + +++ High Stabilising Surfactant. Very broad processing latitude. Lowest VOC TDI silicone surfactant. High stabilizing effect with good cellular regulation.

+++ strongly recommended, ++ recommended with adjustment, + may be recommended

HR Slabstock Foam
Concentrol® Grade HR MDI HR TDI/MDI HR TDI Stabilising Efficiency Additional Information
STB PU-1230 + Low TDI foal with slightly coarser cells. Special MDI formulations at low usage levels.
STB PU-1250 +++ Medium For TDI 80 formulations, wide processing latitude.


Special Applications
Foam type Surfactant Additional Information
High density foams (>100kg/m³) 2239, 2218, 2244 Wood imitation systems and structural foams with complex moulds. Defect-free surfaces.
Higher density foams - open celled (>100kg/m³) 2223, 2257 Cell opening with stabilising properties. Low polarity surfactants.
Medium density, open celled foam (30 - 50kg/m³) 2223, 2257 Cell opening with stabilising properties. Low polarity surfactants.
Low density, water blown foam (<15kg/m³) 2290, 2237 Repackaging foams, open celled foam offering excellent dimensional stability.
OCF - straw foam 2208, 2209 Non reactive surfactants
2210 Non reactive surfactant for winter formulations. Usable with high amount of blowing agent, polyester polyols and chlorinated paraffins.
OCF - gun foam 2226 Fine, regular open celled foam.
2210 Non reactive surfactant for winter formulations. Usable with high amount of blowing agent, polyester polyols and chlorinated paraffins.

Rigid Polyurethane Foam
Cont. flex-faced panel Cont. metal-faced panel Block Spray
Blowing agent Appliance Disc. Panel PUR PIR PUR PIR PUR PIR Conventional Low Density
HC 2274, 2266, 2265, 2242/2241 2276³ 2252 2213, 2239, 2271 2244 2244 2266, 2265 2276
Water 2254, 2255, 2264 2254, 2255, 2264 2264 2226, 2290
HFC-365mfc/ HFC-227ea 2266, 2265 2266, 2265 2206, 2264, 2267
HFC-245fa 2266¹, 2265¹ 2266¹, 2265¹ 2266¹, 2265¹ 2256, 2251C²
HCFC-141b 2266, 2265, 2242/2241 2266, 2265 2266, 2265 2266, 2265, 2244 2266, 2265 2206, 2264
HFO 2214 2214 2214 2214 2214

1. Suitable for blowing agents with low-boiling point (e.g. HFC-134a)

2. For FR-rated systems

3. Pipe insulation systems

Silicone Surfactants for Standard Flexible Slabstock Foam
Concentrol® Grade Application Activity/foam properties
STB PU-3111 Polyester black foam High efficiency. For formulations with medium and very low density (8-30 kg/m³) and with a polyol with OH =56 and high amount of blowing agent like methylene chloride.
STB PU-3160 Polyester black foam Medium efficiency, low emanations.
STB PU-3220 Polyester black foam Very high efficiency with wide processing latitude for conventional and FR. All water and methylene chloride formulations.
STB PU-3223 STB PU-3280 Polyester black foam High potency surfactants, excellent cell stabilization with wide-processing latitude and high breathability for low and ultra low densities (5 up to 18 kg/m3). Specially indicated for CO2 or methylene chloride.
STB PU-3228 Polyester black foam High efficiency, low emanations and useful for CO₂ blown foams. MDI/TDI viscoelastic applications.
STB PU-3230 Polyester black foam Moderate efficiency with wide processing latitude for conventional and FR foam. High methylene chloride formulations.
STB PU-3233 Polyester black foam High potency surfactant, excellent cell stabilization with wide-processing latitude and high breathability for low and ultra low densities (5 up to 18 kg/m³). Specially indicated for high amount of methylene chloride.
STB PU-3270 Polyester black foam Medium to high efficiency, wide processing latitude for low to medium densities. For most standard formulations with water or methylene chloride.

Please get in touch with our Resins and Specialities team by filling out the enquiry form below.

The information shown on this page(s) is intended as a product guide only; specification and properties of products are subject to change by the manufacturer and no guarantees or warranties are implied or inferred by the information provided here. It is the responsibility of the user to request the most current information and determine the suitability of any product in the user’s application.

*in line with our commitment to Responsible Care®, a pre-delivery safety inspection will generally be required prior to the first bulk delivery of a hazardous liquid.


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