
ASTRA LA®
Silicone Leveling Agents
Silicone leveling agents to improve flow and leveling of coatings. Eliminate brush marks, orange peel, craters. High compatibility with various binders, weather resistance.
Why silicone leveling agents?
Brush marks, orange peel and crater defects are the hallmark of poor leveling. Silicone leveling agents migrate to the surface during film formation and create a smooth, even, defect-free finish. They also improve slip and weather resistance.

Key Benefits
- Eliminates brush marks and orange peel
- Crater prevention
- Surface slip and scratch resistance
- Weather and UV resistance
- High compatibility across binder systems
- Anti-graffiti grades available
Impact on Coating Performance
Silicone leveling agents from ASTRA LA bring premium-grade finish to coatings — the kind that customers can see and feel. Essential for automotive, furniture and high-end industrial applications.
O – organosoluble, WB – water-based, RC – radiation-curable
Product Catalog
Download TDS| Active % | Feature | TDS | |||
|---|---|---|---|---|---|
| ASTRA LA-101 | BYK-306, EFKA 3033, TEGO 415 | O | 15% | Good compatibility, does not affect the overlapping ability of the coating. Provides sliding and leveling. | |
| ASTRA LA-1201 | BYK-331 | O / WB / RC | 100% | Good compatibility, does not affect the overlapping ability of the coating, ensures alignment. | |
| ASTRA LA-1601 | BYK-333 | O / WB / RC | 100% | Good compatibility, does not affect the overlapping ability of the coating, ensures alignment and sliding. | |
| ASTRA LA-1901 | BYK-UV3510 | O / WB / RC | 100% | Provides effective wetting and leveling, provides resistance to contamination, prevents cratering. Particularly suitable for UV-curable systems. | |
| ASTRA LA-2001 | BYK-UV3510 | O / WB / RC | 100% | Developed for UV-curing systems, but can also be used in epoxy and water-based systems. Provides a soft-touch coating effect. Particularly suitable for paper coatings. Has adhesive properties. | |
| ASTRA LA-201 | BYK-310 | O | 25% | Good compatibility with resins, does not affect the overlapping ability of the coating. Provides sliding and leveling. | |
| ASTRA LA-3101 | BYK-9565 | O / WB / RC | 100% | Prevents cratering, provides leveling, affects the orientation of matt agents, provides water resistance and anti-adhesion. Gives a soft-touch effect to the coating. | |
| ASTRA LA-3901 | BYK-UV3505 | O / WB / RC | 50% | Contains acrylate double bonds, suitable for UV-curable systems. Good compatibility, provides leveling, anti-vandal coating effect. Provides soft-touch coating effect in water-based and organic-based systems. | |
| ASTRA LA-4001 | BYK-SILCLEAN 3700 | O | 25% | Good compatibility with resins, suitable for transparent systems. Ensures no blocking of the coating. Ensures leveling and sliding. | |
| ASTRA LA-4201 | BYK-378 | O / WB / RC | 100% | Universal additive, suitable for all types of systems. Good compatibility, provides slip, reduces surface tension, affects the orientation of matting agents. |
Need technical assistance?
Our team can help you select the right additive for your formulation.
Contact Technical Support