Nouryon Levasil

Stand: 407

Website: https://www.nouryon.com/products/colloidal-silica

Company Profile

Under our main product brand Levasil®, we offer several grades of fluid, low viscosity colloidal silica dispersions. The Levasil portfolio offers a wide range of particle size, surface areas, structure, concentration, pH, surface charge and surface modification which allows us to deliver the perfect colloidal silica product for your application.

Just to give you an idea:
• By adding Levasil® colloidal silica, you can improve anti-soiling properties in coatings such as silicate paints and elastomeric cool roof coatings.
• In catalyst manufacturing. Levasil® CA provides advantages such as extended lifetime and higher productivity.
• In construction - Levasil® CB is excellent for use underground thanks to its high ground consolidation and water sealing capabilities.

Seminars

16:20 - 16:40

Silane Modified Colloidal Silica in Waterborne PUD Coatings for Galvanized Steel

The use of silane modified colloidal silica in PUD resin-based coating formulations in combination with resin and epoxy silane has been investigated. The samples were evaluated regarding their mechanical, physical properties and corrosion resistances on galvanized steel. Addition of modified colloidal silica enhanced the corrosion resistance significantly. The coating cross-linking density increased upon silica and silane addition. Synergy between silane, colloidal silica and resin in corrosion resistance could be noted but did not correlate to any further increase in cross-linking density. A good compatibility was observed, hardness of the coatings were in agreement with their good flexibility and impact resistance.

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