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Identification & Functionality
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Features & Benefits
- Labeling Claims
- Benefits & Advantages
TEGO® Antifoam 2291
Applications & Uses
- Applications
- Applicable Processes
- Compatible Polymers & Resins
- Adhesive & Sealant Type
- Applications
- TEGO® Antifoam 2291 destroys foam or prevents foam formation reliably in aqueous media and may be used for foam control in a variety of industrial applications, even there where the use of silicone and silica is not accepted.
- process aid for water-based polymerization of dispersions, thermoplastics and elastomers (e. g. de-monomerisation of SBR or NBR emulsions, handling of acrylates)
- in formulation and application of polymer dispersions/latices (e. g. adhesives based on acrylates or PVAc, paper coatings or others)
- in underwater granulation of additive masterbatches or compounds
- in a multitude of other industrial applications
- Handling & Processing
- Depending on the application in question the required dosage may vary over a wide range (0.005%-0.2%); therefore suitable screening tests are recommended (initial dosage 0.1%).
- Handling TEGO® Antifoam 2290 can be applied as delivered or prediluted with water in the way that the amount of water is in the dilution vessel and the antifoam is added to the water.
- If the antifoam is prediluted, active contents of 5 -10% are recommended.
- High shear forces on the diluted product should be avoided as it might break the emulsion.
- The water temperature used for the dilution should be ideally 20-40°C to form a stable emulsion.
Properties
- Appearance
- Yellowish
- Physical Properties
| Value | Units | Test Method / Conditions | |
| Active Content | 100 | % | — |
| Density (at 25°C) | approx. 0.88 | g/cm³ | — |
| Viscosity (Dynamic, 25°C) | approx. 100 - 500 | mPa.s | — |
Technical Details & Test Data
- Framework of LCA
Goal:
- Calculation of the environmental performance of products manufactured and sold by Business Line Interface & Performance.
System Boundary:
- Cradle-to-Gate
Functional Unit (FU):
- 1 kg TEGO® Antifoam 2291
Methodology:
- All our Life Cycle Assessments are following the principles of ISO 14040/44 and ISO 14067 standards.
- The established method of the Dutch Environmental Science Research Center Leiden (CML) with characterization factors from November 2013 was used.
- Data Sources: The LCA was created in 2020 by an internal Life Cycle Management team.
- The LCA is based on primary data from the year 2014 by Evonik for the production process, while secondary data from databases (such as GaBi and ecoinvent), suppliers or literature is utilized for external processes and raw materials.
- The software GaBi 10 was used for the LCA modeling.
- The data for energy consumption were updated with values from 2021.
Cut-off rules for the inventory:
- In general, 1% for single inputs and below 5% for the sum.
- No environmentally relevant flows were neglected.
- Some utilities of production processes have been modeled analog to known processes.
- Transports have been considered but distances have mainly been estimated.
- The result uncertainty in all categories is about +/- 20 % as these results base on several assumptions.
Result (Cradle-to-Gate):
Evaluation variables Value Unit per FU Blue water consumption 6.3 kg Global Warming Potential incl. LUC 1.3 kg CO2 eq. Primary Energy Demand 58.5 MJ
Packaging & Availability
- Packaging Type
- Packaging
TEGO® Antifoam 2291
- Packaging
- 170 kg drums (680 kg each pallet)
- 850 kg container
Storage & Handling
- Shelf Life
- max. 12 months
- Storage Conditions
It is stable in closed containers for a minimum of 12 months at ambient temperature. It must be stored in frostfree conditions.