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瓦克在 ABRAFATI 2011上展示创新的有机硅产品

来源：林中祥胶粘剂技术信息网2011年11月07日

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Wacker to Showcase Innovative Binder and Silicone Products at ABRAFATI 2011

Munich / Sao Paulo -- Innovative polymer and silicone products for paints, coatings, sealants and adhesives are among the products presented by the WACKER Group at ABRAFATI 2011, the international tradeshow for suppliers to the paints and coatings industry in Sao Paulo, Brazil. WACKER will introduce SILRES IC 368, a new liquid but solventless silicone resin intermediate for highly weatherable coatings, the first time ever at a South American exhibition. WACKER is also showcasing VINNAPAS EF8300 and VINNAPAS EF8001. These polymer dispersions enable high-quality coatings formulated without using plasticizers or solvents. They are also manufactured without the use of alkylphenol ethoxylates or formaldehyde donors. Additional highlights are VINNOL H 30/48 M, a purely ester-soluble surface coating resin for heat-sealed closure systems, GENIOSIL N fast-curing high performance adhesives and sealants, and silicone resin emulsion paints for facade coatings. ABRAFATI will be held in São Paulo from November 21 to 23, 2011.

The Munich based WACKER Group will showcase several new products at this years ABRAFATI tradeshow. "WACKER will not only focus on new polymer binders and silicone based additives for the paint and coatings industry. We will also present innovative and sustainable solutions for construction purposes, such as ultra-fast curing adhesives and sealants and water and dirt repellent silicones for masonry protection", said Danilo Timich, Managing Director of Wacker Qu铆mica do Brasil. The WACKER subsidiary has expanded significantly over the past years. "The South American paint and coating industry shows healthy growth rates and is therefore very attractive for us. Due to our innovative products and our solutiondriven expertise, supported by our Technical Center in São Paulo, we are prepared to leverage further growth potentials in this region."

Among the novel products at ABRAFATI, WACKER will present a solventless silicone resin intermediate which significantly boosts the protection and durability of coatings. The new silicone resin, recently launched as SILRES IC 368, is formulated in such a way that an addition of just 15 percent increases the UV resistance and weatherability of the organic binder in the coating system, without impairing its mechanical properties. Lab and open-air weathering tests show that coating systems enhanced with SILRES IC 368 exhibit much better gloss retention, superior weatherability and a longer service life, along with improved heat resistance.

SILRES IC 368 is a liquid with low viscosity which can be processed without organic solvents. When this intermediate is cooked with the same proportion of alkyd and silicone resin, the resultant viscosity is one third of the value obtained with solid silicone resins. This means that SILRES IC 368 is very useful for combination resins that have an extremely high solids content, yet sufficiently low viscosity, e.g. for low-solvent, high-solids topcoats.

This highly versatile new intermediate is suitable for modifying alkyd resins, hydroxy-functional acrylic resins and hydroxy-functional polyesters that are commonly used for the industrial coating of wood and metal (including coil coating). The new silicone resin also raises the bar in terms of efficiency. The same amount of SILRES IC 368 enables binder manufacturers to achieve a much greater effect than was previously possible with silicone intermediates.

VINNAPAS Dispersions for High-Quality Decorative Paints

Two recent additions to the VINNAPAS line, EF8300 and EF8001, are ideal for interior decorative paints and coatings that combine high performance with a reduced environmental impact. Further, these vinyl acetate-ethylene copolymer (VAE) dispersions are more than capable of meeting challenging demands in terms of use and performance while offering a good cost/benefit ratio.

VINNAPAS EF8300 was developed specifically for high performance interior architectural coating formulations and is particularly suited for flat through semi-gloss applications. The dispersion combines excellent properties such as good block resistance, scrub resistance and wet adhesion with the ability to formulate paints with a low VOC content (volatile organic compounds, < 5 g/l). The new VINNAPAS EF8001 grade further features excellent touch-up properties even at low temperatures as well as outstanding scrub resistance. The product is recommended especially for flat through mid-sheen finishes.

Both products have a reduced environmental impact, as they are manufactured without the use of formaldehyde donors or alkylphenol ethoxylates (APEO). In addition, their low glass transition temperature (Tg) and minimum film formation temperature (MFFT) provide the polymers with a very low to no cosolvent demand for homogenous film formation. As both VINNAPAS EF8300 and VINNAPAS EF8001 are also very low in residual vinyl acetate monomer (VAM < 200 ppm) they are ideally suited for formulating high-quality coatings with a low VOC content.

VINNOL Surface Coating Resins: Versatile and Cost-Effective

WACKERs VINNOL line contains a wide range of vinyl chloride and vinyl acetate copolymers, both with and without functional groups. This enables a wide range of applications.

At ABRAFATI, WACKER will focus on VINNOL H 30/48 M, a surface- coating resin with carboxyl groups. It is notable for its excellent solubility in pure esters, where it yields a clear, colorless solution, without the use of any ketones. This opens up all kinds of application possibilities. Lower raw-material costs also generate cost savings. The product can be heat-sealed at low temperatures because it has a higher content of vinyl acetate in the polymer backbone. For this reason, VINNOL H 30/48 M is perfect for packaging heat-sensitive pharmaceuticals and foods, such as cheese and yogurt.

GENIOSIL STP-E - Hybrid Adhesives with Turbo Power

The future belongs to adhesives offering the combination of strength and elasticity needed for a broad range of challenging applications. WACKER has developed its innovative GENIOSIL STP-E technology especially for this class of adhesives.

GENIOSIL is based on alpha-silanes that exhibit extremely high reactivity. This can be exploited to produce completely novel, fastcuring, one-component adhesives and sealants. The alpha-effect even permits the formulation of tin-free systems - representing a technological leap in user safety. Adhesives formulated with GENIOSIL STP-E posse