ADDITOL XL 490 is a high-performance coating additive of Allnex ADDITOL® series, a silicone-free two-in-one product of leveling and anti-crater agent, specially developed for various coating systems. It can significantly improve the surface quality of paint films, effectively prevent defects such as craters and poor leveling, adapt to epoxy, polyester, polyurethane and other resin systems
Three-in-one effect - Integrating leveling, mar resistance and anti-slip, synchronously upgrading surface performance
Water-based system adaptation - Specially designed for water-reducible coatings, strong adaptability and no compatibility risk
Outstanding adhesion - Extremely strong adhesion to low-polar substrates, enhancing coating bonding stability
Surface defect prevention - Optimize leveling, reduce crater defects and create a flat and smooth paint film
Convenient and efficient processing - Easy to add, takes effect immediately, stable performance during long-term storage and low dosage
Water-based industrial coatings - Improve mar resistance and anti-slip, suitable for low-polar substrate coating
Water-based decorative coatings - Optimize leveling and appearance, reduce surface defects and improve coating texture
Water-based wood coatings - Enhance wear resistance and smoothness, extend the service life of wood coatings
Water-based plastic coatings - Improve adhesion to low-polar plastic substrates and optimize surface performance
High-performance water-based topcoats - Balance leveling and scratch resistance, create high-quality surface effects
| Chemical Type | Silicone-based coating additive |
| Product Form | Pale yellow transparent liquid |
| Applicable System | Water-reducible (water-based) coatings, various water-based paint systems |
| Active Ingredient | Approx. 50% (water-based system) |
| Recommended Dosage | 0.1~0.3% (based on total formula weight) |
| VOC Content | Low/Zero VOC (water-based system) |
Q1: What types of coating systems is ADDITOL XL 490 best suited for?
A: ADDITOL XL 490 is specifically designed for solvent-borne and high-solids industrial coatings, including automotive refinish, coil, and general metal finishing systems. It performs well in both thermosetting acrylic, polyester, and polyurethane-based formulations where superior flow and leveling are required.
Q2: How does ADDITOL XL 490 compare to silicone-based leveling agents?
A: Unlike silicone-based additives, ADDITOL XL 490 is a non-silicone, acrylic-modified polyether leveling agent. It provides excellent substrate wetting and flow without the risk of recoatability issues, intercoat adhesion problems, or silicone contamination often associated with silicones—making it especially suitable for multi-layer and repair-sensitive applications.
Q3: Is ADDITOL XL 490 compatible with common crosslinkers used in industrial coatings?
A: Yes, ADDITOL XL 490 demonstrates good compatibility with melamine formaldehyde resins, blocked isocyanates, and other standard crosslinkers used in thermosetting industrial coatings. Compatibility should always be verified in the final formulation due to system-specific interactions.
Q4: What is the typical dosage range for optimal performance?
A: ADDITOL XL 490 is typically used at low concentrations—generally ranging from 0.1% to 2.0% by weight relative to total formulation solids—depending on resin type, viscosity, film thickness, and desired surface appearance. Start with lower dosages and adjust based on application testing.
Q5: Does ADDITOL XL 490 affect pot life or curing behavior?
A: ADDITOL XL 490 is chemically inert toward common curing reactions and does not significantly impact pot life or thermal cure kinetics in standard industrial coating systems. However, as with any additive, its influence on rheology and drying characteristics should be evaluated during formulation development.
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