BRB launches phenyl silane for adhesion promotion applications
Last update on Jun 17, 2026
Formulators working on sealants, adhesives, and electronics can now evaluate Silanil® 299, a phenyl-functional trimethoxysilane introduced by BRB.
According to BRB, the grade combines a hydrophobic phenyl group with hydrolysable methoxysilane groups, allowing it to act as a bridge between organic polymers and inorganic surfaces.
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Combining hydrophobicity & heat resistance
The supplier reports that it forms siloxane (Si–O–Si) networks through hydrolysis and condensation, and indicates thermal stability, hydrophobicity, and chemical resistance as the resulting performance characteristics. As reference context, Surface Coatings International (Journal of the Oil & Colour Chemists' Association) describes silanes broadly as adhesion promoters, coupling agents, surface modifiers, hydrophobizing agents, and crosslinkers across industries.
View technical datasheets of Silanil® grades by BRB >>
BRB reports the following application areas for the grade:
- Adhesion promotion in coatings, sealants, and adhesives
- Precursor for phenyl silicone resins and fluids
- Protective coatings for electronics, for moisture and heat resistance
- High-refractive-index materials for optical applications, with a reported refractive index of nD20 ≈ 1.468–1.475
- Sol-gel systems and nanotechnology applications
The reported refractive index range gives formulators working on optical or encapsulation systems a concrete parameter to assess against their index-matching targets, rather than a general performance claim.