The increased use of aluminum alloys and other lightweight metals brings new challenges for formulators. These metals are susceptible to staining during the machining process creating greater need for additives that are non-corrosive. Add in additional regulatory concerns surrounding phosphorus and silicon could mean formulators find their options limited.
Limitations of present types of Aluminum Stain resisting agents
- Phosphorus based – Most effective ones with wide working pH range
- Sulfonates – Poor solubility in base oil
- Carboxylic Acid/amine salts– Narrow pH effective range and hard water sensitive
- Polymers –not to be compatible in synthetic fluids
- Silicates –Not stable enough. Hydrolysis reaction. Tend to form undesirable, tacky residue on the workpiece or the machine tool
Our Solution
Syensqo provides the industry with the next generation stain inhibitor to address the issue. Geropon AS 020 is a phosphorus and silicone free aluminum stain inhibitor that is also hard water stable. Gerapon AS 020 outperforms traditional phosphorus-based chemistries even at very low treat levels.
Testing Results
Aluminum Coupons Half-immerse Test
Thermal Stability Comparison
Geropon AS 020 has almost 40°C higher thermal decomposition temperature than other phosphorus containing inhibitors. Superior solution for modern machining.
Foam Tendency Tests
Low Foaming Test – CNOMO Testing
If necessary, the foam tendency of Geropon AS 020 could be suppressed by tiny amount of defoamer to a lower foam level.
Low Foaming Performance – Handshaking Test
If necessary, the foam tendency of Geropon AS 020 could be suppressed by tiny amount of defoamer to a lower foam level.
The Ideal Addition
GEROPON AS 020 has unique key features and benefits that make it an ideal addition to the formulator’s toolbox:
- Excellent anti-stain performance at low dosage
- Phosphorus and Silcone free: suitable for a wide range of applications
- Low labeling and low toxicity
- Better thermal stability vs phosphate esters
- Global registration
Sysenqo’s new high performance aluminum stain inhibitor can help you meet your future formulation requirements. Contact us for more information and to request a sample.