TEGO Airex 901 W — Technical Profile
TEGO Airex 901 W is a Polyether siloxane-based deaerator and defoamer for non-aqueous systems manufactured by Evonik Industries AG (Germany), part of the TEGO Airex product line. Solvent-free for WB.
How It Works
TEGO Airex 901 W destabilizes entrapped air bubbles (micro-foam and macro-foam) in the wet film by reducing the surface elasticity of bubble walls, causing them to drain, thin, and rupture. Deaeration (micro-bubble release) is the primary function — these are not traditional aqueous defoamers but film-applied air release agents.
Key Specifications
| Property | Value |
|---|---|
| Chemistry | Polyether siloxane |
| Function | Deaerator/defoamer |
| Active content | 50–100% |
| Solvent carrier | varies (some solvent-free) |
| Flash point | grade-dependent (>60°C typical) |
| Shelf life | 24 months |
| Recommended dosage | 0.1–1.5% based on total formulation weight |
Applications
- Coatings
- Inks
Dosage & Addition
- Recommended dosage: 0.1–1.5% based on total formulation weight
- Addition point: Add during dispersion or letdown; some grades effective as post-add
Formulation Considerations
Airex 922 (silicone-free) is critical for epoxy floor coatings where silicone contamination prevents recoating. Airex 931 (fluorosilicone) is uniquely effective for pinhole prevention in thin-film applications.
Looking for a TEGO Airex 901 W Alternative?
Our SEMITECH Additives range offers functionally equivalent deaerator and defoamer for non-aqueous systemss that deliver the same performance as TEGO Airex 901 W — matched surface tension reduction, compatibility profile, and application behavior — at 20–40% lower cost.
Why formulators switch to SEMITECH Additives:
- Drop-in replacement — no reformulation needed in most systems; matched chemistry (Polyether siloxane) ensures equivalent performance at the same dosage (0.1–1.5% based on total formulation weight)
- Competitive pricing — 20–40% cost advantage vs. Evonik list price, with volume tier discounts available
- Reliable supply — direct from manufacturer in China, 2–4 week lead time, safety stock programs available
- Technical support — formulation assistance, application testing, and side-by-side comparison data provided
- Flexible MOQ — from 25 kg trial drums to 20-ton container loads
- Quality assurance — ISO 9001 certified, batch-to-batch consistency with full CoA
Qualification Process
- Request sample — we ship 1–5 kg free sample of our TEGO Airex 901 W equivalent
- Lab testing — side-by-side evaluation in your formulation at equivalent dosage
- Application testing — confirm performance on your production equipment
- Qualification — full TDS, CoA, and regulatory documentation provided
- Scale up — seamless transition to production quantities
TEGO Airex 901 W® is a registered trademark of Evonik Industries AG. SEMITECH Additives products are independently developed functional equivalents, not produced by or affiliated with Evonik.
Need a Sample or Quote?
Chemzip supplies all the chemicals mentioned above. Qualified Chinese manufacturers, reply within 24 hours.