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CAS NO.:67762-90-7
EC/LİST NO : 924-588-1
Defoamer formulations often contain hydrophobic silica particles in order to boost their defoaming efficiency in numerous important industrial applications, for example, pulp production, water treatment, oil extraction, and waterborne paints and coatings, just to name a few.
Defoamers are usually mixtures consisting of a carrier oil, emulsifiers, hydrophobic silica particles, and miscellaneous other compounds .
SIPERNAT D 10 is a hydrophobic precipitated silica and as such very well known in the defoamer industry 1.
Alternatively, hydrophobic silica can be generated “in-situ” during preparation of a defoamer formulation.
In this process, hydrophilic silica particles are dispersed in the carrier oil and reacted with a hydrophobization agent (e.g. silicone oil) at elevated temperature in the presence of an alkaline catalyst.
During the reaction the hydrophobization agent is grafted to the silica surface rendering it hydrophobic.
The “in-situ” hydrophobization is quite commonly employed for fumed silica, too.
Content of this technical information is the experimental comparison of Evonik’s SIPERNAT D 10 as defoamer silica with selected commercially available fumed silica grades, which were “in-situ” hydrophobized.
Four different model formulations were chosen according to defoamer formulations commonly used in technical applications.
Two of them were based on a mineral oil carrier; one with and the other one without an emulsifier.
The other two formulations were based on a silicone oil carrier, one of them emulsified in water.
Precipitated silica and silicate derivatives.
High internal pore volume.
A range of particle size distributions.
FAMI-QS approved grades available.
Hydrophilic and hydrophobic variants.
Highly efficient liquid carrier capable of absorbing up to three times its own weight.
Improves flow properties and reduces effects of caking in hygroscopic powders.
Popular choice for antiblocking in polymer films due to spherical morphology, size and hardness.
Hydrophobized grades work well in boosting defoamer efficiency.
Cost effective IR absorption in polymer films.
Free-flow and anticaking additive in a wide range of host powders.
Carrier for a wide range of liquids e.g. pesticides, fragrances, feed additives.
Booster for defoamer/anti-foaming agent manufacture.
Antiblocking agent in polyethylene film. Works well in other thermoplastics as well.
Matting and scrub resistant additive in decorative coatings.
Dimethicone (and) Silica. SIPERNAT D 10 by Evonik is used as a rheological additive.
SIPERNAT D 10 is a milled & hydrophobic silica with high methanol wettability and low surface area.
This ingredient offers high effectiveness and ease of dispersion.
SIPERNAT D 10 is used in cosmetic applications.
SIPERNAT D 10 by Evonik is a milled, synthetic, amorphous, hydrophobic silica.
SIPERNAT D 10 exhibits high methanol wettability, low surface area, high effectiveness and ease of dispersion.
SIPERNAT D 10 is registered with TSCA, AICS, DSL, PICCS, IECSC, ENCS, KECI and NZIoC.
SIPERNAT D 10 has a shelf life of 24 months.
SIPERNAT D10 is a highly efficient defoamer specially developed by Evonik Degussa.
SIPERNAT D10s highly efficient foam breaking ability and high dispersibility in hydrophobic solvents make it suitable for a variety of defoamers.
Compared with fumed silica, the application effect is significantly improved; sensitive to water.
powders are also often used as a flow aid and anti-caking agent.
The main advantages of Sipernat D 10 applied to the defoamer:
Compared to the fumed silica commonly sold on the market, SIPERNAT D 10 can provide 5-10 times greater defoamer efficiency in mineral oil-based antifoam formulations; With silicone oil-based antifoam agents, approximately 2 times greater defoamer efficiency can still be achieved.
defoaming efficiency.
SIPERNAT D10 has incomparable advantages, especially when compared to hydrophilic fumed silica, as it does not need to undergo a long-term high temperature (150-200°C) hydrophobization process, besides the great difference in defoaming efficiency.
SIPERNAT D10 can significantly reduce energy consumption and accelerate the output of finished products.
SIPERNAT D10 can adapt to various defoaming environments.
SIPERNAT D10 can work normally for strong acid and strong alkali systems which are difficult to adapt to general silica.
Reasonably adjust the formula and working process.
Compared with other types of silica, the dosage of SIPERNAT D10 can be reduced by 20-40% and the foam breaking speed is fast, the foam suppression time is longer, and it is easier to Disperse in mineral oil and silicone oil than fumed silica (usually at room temperature or 60-60°C for even dispersion). Heat and stir at 80°C for 30-60 minutes).
SIPERNAT D10 is a highly hydrophobic silica that does not wet with water.
CAS NO: 67762-90-7 Main application: Sipernat D10 is a high efficiency defoamer specially developed by Evonik Degussa.
Sipernat D 10s high efficient foam breaking ability and high dispersibility in hydrophobic solvents are used in various defoamers compared to general smoked.
silica, the application effect is significantly improved; SIPERNAT D10 is also often used as a flow aid and anti-caking agent in water-sensitive powders.
SIPERNAT D10 is a highly efficient defoamer specially developed by Evonik Degussa.
SIPERNAT D10s highly efficient foam breaking properties and high dispersibility in hydrophobic solvents enable it to be used in various defoamers as opposed to general gas phases.
Compared with silica, the application effect is greater.
significantly improved; It is also often used as a flow aid and anti-caking agent in water-sensitive powders.
Compared to the fumed silica commonly sold on the market, SIPERNAT D10 can provide 5-10 times greater defoaming efficiency in mineral oil-based antifoam formulations;
With silicone oil-based defoaming agent, the defoaming efficiency can still reach about 2 times.
SIPERNAT D10 has incomparable advantages, especially when compared to hydrophilic fumed silica, besides the great difference in defoaming efficiency, as it does not require a long time.
The time and high temperature (150-200°C) hydrophobization process can significantly reduce energy consumption and accelerate the output of finished products.
SIPERNAT D10 can adapt to various defoaming environments.
SIPERNAT D10 can work normally for strong acid and strong alkali systems which are difficult to adapt to general silica.
Reasonably adjust the formula and working process.
Compared with other silica types, the amount of SIPERNAT D10 can be reduced by 20-40%, and the foam breaking speed is fast and the foam suppression time is long.
SIPERNAT D10 is easier to disperse in mineral oil and silicone oil than fumed silica (usually heated at room temperature or 60-80°C and mixed and evenly dispersed for 30-60 minutes).
ItemType: D10
Content of sio2(dry basis) %: ≥97.0
Specific Surface Area ,m2/g: 50-70
Bulk Density, g/l: 130-150
Particle Size(Malvent D50),um :5.0-7.0
Loss on drying(105℃ ，2Hrs):≤4.0
Ignition loss(1000℃,2Hrs) :≤8.0
Salt as Na2SO4, % :≤1.0
PH(5% Liquor): 6.5-7.5
Heavy metal,mg/kg:≤0.001
IUPAC NAME:
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Synonyms:
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