MOSCOW (MRC) -- Wacker has presented high-performance silicones and polymer binders for challenging coatings and construction applications: wood impregnated with the silicone resin emulsion SILRES WH is protected against damp, moisture and damage caused by swelling and shrinkage for an exceedingly long time, said the producer on its site.
New dispersions and dispersible powders of the VINNAPAS brand enable reliable waterproofing construction solutions, even under pressure and at low temperatures. Further highlights are SILRES BS silicone emulsions for water-repellent, yet vapor-permeable masonry coatings as well as a new VINNAPAS dispersion for flexible flooring adhesives.
The novel silicone resin emulsion SILRES WH provides wood with long-lasting protection against moisture and damp, as the beading effect on impregnated wood shows (right). In contrast, untreated wood (left) soaks up water immediately. By providing long-term protection, SILRES WH greatly reduces the frequency of renovating and recoating exterior woodwork.
The 40-percent emulsion is based on a functional silicone resin and can serve as a water-repellent impregnating agent or as an additive for formulating film-forming wood stains. Due to its hydrophobic properties, SILRES WH reduces the water uptake of wood and keeps its water content low. Consequently, the wood is better protected against typical damage such as cracks caused by swelling and shrinking. SILRES WH added to paints and wood stains confers lasting water repellency, even in low concentrations. The water repellency is clearly revealed by the beading effect the emulsion produces on wood surfaces after weathering. The new product greatly reduces the frequency of renovation and repainting compared with conventional wood preservatives.
Further highlights were Wacker’s vinyl acetate-ethylene copolymers (EVA)-based products for waterproofing construction solutions. VINNAPAS 536 ED is ideal as a versatile binder for two-component waterproofing membranes for creating reliable seals in wet areas, such as kitchens or bathrooms. The product offers good compatibility with cement and inorganic fillers which results in high bonding strength. For one-part cementitious waterproofing membranes, Wacker is presenting the EVA-based dispersible powder VINNAPAS 5044 N. The product offers strong adhesion, even following protracted exposure to water, as well as high elasticity, outstanding crack-bridging ability, and ease of processing, making it ideal for long-lasting coating of canals, pipes, cellars, swimming pools and damp rooms.
The products of the SILRES BS portfolio are based on water-repellent silicone resins and silicone resin emulsions and offer building protection for decades. Silicone resins form an extremely stable and highly durable three-dimensional silicone resin network on mineral surfaces and within mineral-based coatings. The network repels water and moisture, but is permeable to water vapor inside the wall. This effect keeps the building structure dry and prevents wall damage and decay caused by moisture.
As MRC informed before, in 2013, Wacker Chemie AG officially launched its new production plant for EVA dispersions at its Ulsan site in South Korea. The additional 40,000 tonnes from the second reactor line increases the site's EVA-dispersion capacity to a total of 90,000 tonnes per year. The production capacity of the site has, thus, almost doubled, making the plant complex one of the biggest of its kind in South Korea.
Wacker Chemie AG is a worldwide operating company in the chemical business, founded 1914. The company is controlled by the Wacker-family holding more than 50 percent of the shares. The corporation is operating more than 25 production sites in Europe, Asia, and the Americas. The product range includes silicone rubbers, polymer products like ethylene vinyl acetate redispersible polymer powder, chemical materials, polysilicon and wafers for semiconductor industry.
MRC