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WACKER at ECS 2015: to Present SILRES® WH Resin, Binders & Additives for Paints and more

Published on 2015-02-11. Author : SpecialChem

The Munich-based WACKER Group will present new binders and additives for the paint and surface-coating industries at the European Coatings Show (ECS) in Nuremberg, Germany. One of the highlights is the new silicone resin emulsion SILRES® WH. The product which is based on a new silicone resin can be used as a hydrophobizing wood impregnating agent or as an additive in wood stains. Wood impregnated with SILRES® WH is protected against damp, moisture and the subsequent damage caused by fungi and insects for an exceedingly long time. WACKER is also showcasing a binder from its new PRIMIS® line for high-value outdoor applications. PRIMIS® AF 1000, the line’s first product, combines organic and inorganic components, enabling the formulation of bright, highly durable, exterior paints with reduced dirt pick-up.

SILRES® WH offers long-term protection against moisture and damp, as the beading effect on impregnated slabs (right) clearly shows. In comparison, untreated slabs (left) absorb water immediately. By providing long-term protection, SILRES® WH greatly reduces the frequency of renovating and recoating exterior woodwork.

At ECS 2015, WACKER will be premiering a silicone resin emulsion for wood protection coatings. Its superior impregnating effect enables long-term protection against damp, moisture and damage from moisture exposure. Marketed as SILRES® WH, the product is so flexible that it even bonds to wood surfaces and thus retains the hydrophobic, i.e. water-repellent properties typical for silicones for many years. Long-term tests with impregnated wood show that the moisture and damp resistant properties of SILRES® WH are fully intact after 15 years. Silicone resin additives which have been successfully used on mineral substrates for decades can now provide wood with lasting outdoor protection.

The 50 percent emulsion is based on a functional silicone resin and is suitable as a wood impregnant or as an additive for formulating film-forming, pigmented wood stains. Due to its hydrophobic properties, SILRES® WH significantly reduces the water uptake of wood and, as a result, its moisture content. Weathering tests have shown that the silicone resin’s impregnating effect lasts for many years. Thus, wood is better protected against typical damage caused, for example, by fungi, mold and insects or by cracks due to shrinkage and swelling. It is possible to reduce the use of biocides in formulations significantly. In wood stains and coatings, even low amounts of SILRES® WH provide a long-lasting hydrophobic effect.

SILRES® WH produces a visible beading effect on wood surfaces. By providing wood with long-term protection, the product greatly reduces the frequency of renovation and recoating compared with conventional wood preservatives. Best results are achieved when mixing the additive with water in a 1:4 to 1:9 ratio. In water-based stains, a concentration of up to three percent SILRES® WH is sufficient.

A further ECS 2015 highlight is the new PRIMIS® line, comprising binders and additives for advanced, high-value paints and architectural coatings. The new line combines organic and mineral components to deliver a binder with a completely novel property profile. The elastic, acrylic ester-based, organic component performs a binder’s traditional role, offering strong adhesion and cohesion, good mechanical properties and enhanced processability. The solid mineral components, on the other hand, have outstanding protective properties and ensure long-lasting, bright colors and reduced dirt pick-up.

PRIMIS® AF 1000 offers improved scratch and abrasion resistance, optimized thermal conductivity and water-vapor permeability, and simpler and more even processing. Additionally, the dispersion is characterized by excellent film formation, even at low outdoor temperatures, and by its elasticity while its surface exhibits maximum blocking resistance. The mineral components also improve fire performance. The dispersion’s good pigment compatibility and color consistency keep exterior paints bright for longer – extending renovation cycles and, in turn, positively impacting overall costs.

The new PRIMIS® AF 1000 dispersion is ideal for challenging exterior applications and expands WACKER’s extensive portfolio designed for plasters and exterior coatings.

About WACKER


WACKER is one of the world-leading manufacturers of vinyl acetate/ethylene and vinyl chloride copolymers, marketed worldwide as VINNAPAS and VINNOL. These thermoplastic, plasticizer-free polymers are mainly used in construction chemicals, adhesives, nonwovens, paints and coatings, paper, carpets and textiles. With over 3,000 highly specialized and innovative products, WACKER is also one of the largest silicone manufacturers worldwide. The portfolio ranges from silicone fluids, emulsions, resins, elastomers and sealants to silanes and pyrogenic silica. These products find application in such sectors as construction, chemicals, cosmetics, textiles, automotive, paper and electronics.

Source: WACKER




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