Quick Search
TEGOSTAB B 8423 is a surfactant.
TEGOSTAB B 8423 is a non-hydrolyzable polyether polydimethylsiloxane copolymer.
TEGOSTAB B 8423 is used in the formulation of polyurethane rigid foams.
TEGOSTAB B 8423 is an additive developed for use in rigid foam systems which are formulated for maximum open cell content.
In these types of formulations TEGOSTAB B 8423 effectively supports cell opening.
TEGOSTAB B 8423 is only a weak stabilizer therefore it has to be used in combination with silicone surfactants, e. g. TEGOSTAB® B 8871.
In particular, TEGOSTAB B 8423 is the cell opener of choice for systems that are used to manufacture water blown, thermo-formable rigid foams as they are required to make automotive headliners.
However, since the performance of TEGOSTAB B 8423 largely depends on the nature of the formulations it might be considered for other systems that are designed for open cell rigid foams as well.
Physical Properties of TEGOSTAB B 8423:
Viscosity (25 °C): 150 – 550 mPas
Density (20 °C): 1.015 – 1.025 g/ml
Recommended storage conditions of TEGOSTAB B 8423:
TEGOSTAB B 8423 has a solidification point below 0 °C.
The viscosity increase at low temperatures is reversible and has no negative influence on the efficiency of TEGOSTAB B 8523.
For TEGOSTAB B 8423 we guarantee a shelf life of at least 12 months upon – provided it is kept in originally sealed drums and protected against extreme weather conditions, particularly against heat and water.
Applications of TEGOSTAB B 8423:
Rigid polyurethane foams with an open cell structure are important materials for some industries, such as the construction (gap filling) or the automotive industry.
Here the typical insulation properties of rigid polyurethane foam are not required.
The structural support and the energy absorbing nature of the foam is much more important.
It is therefore quite common to use water as a chemical blowing agent. In most low density foam grades an open cell structure is essential to achieve a sufficient dimensional stability.
TEGOSTAB B 8423 is a cell opener for rigid polyurethane foam systems which must be used together with a silicone stabilizer, preferably TEGOSTAB B 8871.
This combination of additives allows to adjust the open cell content of the obtained foam to the requirements of a given application by simply changing the ratio of the two components.
The cell opening efficiency of TEGOSTAB B 8523 strongly depends on the formulation parameters and the foam processing conditions.
Therefore the optimal use level as well as the ratio of TEGOSTAB B 8523 and TEGOSTAB B 8871 should be identified in an initial screening to avoid the formation of a coarser cell structure and to achieve the desired degree of cell opening.
Alface 205 is a silicon-carbon bond, non-hydrolytic type foam stabilizer, it is a surfactant of polysiloxane-polyether copolymer.
TEGOSTAB B 8423 is mainly used for manufacturing polyester polyurethane and polyether polyurethane rigid foam , and is a foam stabilizer for PUR water foaming process.
TEGOSTAB B 8423 is also suitable for the production of various kind of polyester polyols such as terephthalic acid based polyester polyol and adipic acid based polyester polyol.
Information concerning of TEGOSTAB B 8423:
- classification and labelling according to regulations for transport of chemicals
- protective measures for storage and handling
- measures in case of accidents and fires
- toxicity an ecological effects is given in our material safety data sheets.
TEGOSTAB is our global brand for our surfactants.
Under this name, our customers can find a large variety of different surfactants for use in all major PU applications (e.g. rigid, flexible slabstock, molded and high-density foams).
We produce all of our surfactants under strict quality standards, with the majority based on silicone chemistry that is VOC optimized to ensure very low emission profiles.
We also offer a selection of organic based surfactant products, designed for special applications.
Other TEGOSTAB products:
TEGOSTAB B 4900: Very broad processing latitude
TEGOSTAB B 8002: Very broad processing latitude for high density foams with low stabilization requirements
TEGOSTAB B 8040: Medium potency stabilizer with wide processing latitude
TEGOSTAB B 8052: Improving nucleation while keeping a good processing latitude for a broad range of formulations
TEGOSTAB B 8266: Narrowing the density distribution within the block while keeping a broad processing latitude
TEGOSTAB B 8291: Wide processing latitude & medium to low potency for a broad range of formulations
TEGOSTAB BF 2370: Outstanding processing latitude to produce very open foam with fine cell structure. Can be used in an extensive variety of foams including Viscoelastic and Hypersoft foams.
TEGOSTAB BF 2470: Improved gas yield and excellent density distribution
TEGOSTAB B 8110: High potency stabilizer for foams produced with physical blowing agents
TEGOSTAB B 8158: Broad processing latitude and fine cell structure, specifically for more hydrophobic polyols including Natural Oil-based Polyols
TEGOSTAB B 8227: Best combination of wide processing latitude, very fine cell structure, block height, gas yield and surface finish
TEGOSTAB B 8228: High potency for medium density foams
TEGOSTAB B 8244: Combination of high potency and good cell opening. Suitable for formulations with hydrophilic / EO-rich polyol
TEGOSTAB B 8255: Strong nucleation support, fine cell structure and high potency for CO2 foams
TEGOSTAB B 8275: Broad processing latitude and good nucleation for medium density foams and foam grades containing NOP
TEGOSTAB B 8955: For sealant foams
TEGOSTAB B 8155: Excellent flammability test performance combined with broad processing latitude
TEGOSTAB B 8189: Very broad processing latitude
TEGOSTAB B 8232: Medium potency combined with broad processing latitude for various FR formulations
TEGOSTAB B 8239: Excellent flammability test performance, fine and regular cell structure
TEGOSTAB B 8239 F: Premium FR surfactant for automotive / flame lamination application
