WACKER Presents New Silicone Additive for Silicate-Based Interior Coatings
03.30.23
SILRES BS 338 facilitates processing of the coating materials, increases their storage stability and enhances the properties of the applied coating.
At the European Coatings Show 2023, WACKER Group will be showcasing a new silicone additive for formulating silicate paints and brush-on plasters for interiors. This product, which is available as an aqueous emulsion under the name SILRES BS 338, facilitates processing of the coating materials, increases their storage stability and enhances the properties of the applied coating.
Wall paints and brush-on plasters produced with the silicone additive have the same breathability as before, but yield a hydrophobic, water-repellent finish that is only slightly absor- bent. This greatly extends the range of options for manufacturers to tailor their silicate paints to market requirements.
SILRES BS 338 complements WACKER’s portfolio of additives for interior coatings. Unlike conventional silicone additives, the new product can cope with the high alkalinity of coating materials that contain a water glass as binder, such as silicate paints and silicate plasters. Wall coatings modified with SILRES BS 338 are notable for their high storage stability.
The active ingredient in SILRES BS 338 is a reactive polysiloxane. During setting, this forms a solid, durable bond with the surfaces of the filler and pigment particles in the coating materials. The resulting effects in the coating are permanent.
Thanks to its low surface tension, which is a characteristic property of silicones, the new additive improves the wetting properties of the coating material and lowers its viscosity. These two effects ensure that the coating material flows well during application.
Silicones are typically hydrophobic and this is also true of SILRES BS 338: coatings formulated with the additive are water-repellent. As a result, water droplets do not penetrate the surface, but roll off instead.
Silicate paints and plasters are mineral coating materials. As they are aqueous, water glass-based systems, they are solvent-free and odorless. They are free of biocides and therefore ideal for painting interiors used by people who, for example, may suffer from allergies.
Wall paints and brush-on plasters produced with the silicone additive have the same breathability as before, but yield a hydrophobic, water-repellent finish that is only slightly absor- bent. This greatly extends the range of options for manufacturers to tailor their silicate paints to market requirements.
SILRES BS 338 complements WACKER’s portfolio of additives for interior coatings. Unlike conventional silicone additives, the new product can cope with the high alkalinity of coating materials that contain a water glass as binder, such as silicate paints and silicate plasters. Wall coatings modified with SILRES BS 338 are notable for their high storage stability.
The active ingredient in SILRES BS 338 is a reactive polysiloxane. During setting, this forms a solid, durable bond with the surfaces of the filler and pigment particles in the coating materials. The resulting effects in the coating are permanent.
Thanks to its low surface tension, which is a characteristic property of silicones, the new additive improves the wetting properties of the coating material and lowers its viscosity. These two effects ensure that the coating material flows well during application.
Silicones are typically hydrophobic and this is also true of SILRES BS 338: coatings formulated with the additive are water-repellent. As a result, water droplets do not penetrate the surface, but roll off instead.
Silicate paints and plasters are mineral coating materials. As they are aqueous, water glass-based systems, they are solvent-free and odorless. They are free of biocides and therefore ideal for painting interiors used by people who, for example, may suffer from allergies.
