Glass Fiber and Mineral Filler Treatment: BRB Silanil® 581 can be applied to inorganic surfaces e.g., glass fibers as a dilute aqueous solution. 0.2 to 1.5% is recommended to add together with organic resin, water, and other additives to form a film on the glass surface during the sizing process. For siliceous mineral fillers, the mineral can be treated by slurrying in the aqueous solution like BRB Silanil® 581 at 0.2-3.0% based on filler weight.
| Average particle size of fillers |
BRB Silanil® 581 dosage (% on filler wt.) |
| <1 micron |
3.0% |
| 1 to 10 microns |
2.0% |
| 10 to 20 microns |
1.5% |
| >20 microns |
0.2 – 0.5% |
Water-Based Primer: BRB Silanil® 581 can be diluted by DI water to be 10-20% concentration and applied on inorganic substrates as a primer before the topcoat to improve adhesion performance. It is recommended to wipe onto the glass or metal substrate; dry at 75°C for 15 minutes or at room temperature for 30 minutes; then apply coating.
Adhesion Promoter in Coatings and Adhesives: BRB Silanil® 581 improves the adhesion of many coatings and adhesives, including acrylic latexes, polyurethane dispersion (PUD), and other water-based systems, to glass and metal surfaces. It can be added directly to a resin system without other additives or pigments at 0.5 to 4.0% based on resin solid weight to promote unprimed adhesion.
