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WACKER Unveils its Silicone Resin Intermediate for the Indian Paints & Coatings Market at PaintIndia

Published on 2012-02-24. Author : SpecialChem

The Munich-based WACKER Group is presenting innovative polymer and silicone products for the paints and coatings industry at PAINT INDIA 2012 in Mumbai from February 23 to 25, 2012. For the first time, WACKER will be showing the Indian market the SILRES® IC 368 intermediate, a liquid, solvent-free silicone resin for highly weather-resistant coatings. The event will also be a local premiere for VINNAPAS® EP 3360, a polymer dispersion for formulating low-odor interior paints. Other high-lights are the VINNOL® H 30/48 M surface coating resin for use in the pharmaceutical and food packaging sector, the highly hydro-phobic VINNAPAS® 8034 H polymer powder for facades and the new SILRES® BS 300 series silicone additives for interior paints.

At this year's PAINT INDIA, WACKER is introducing its new solvent-free silicone resin intermediate to the Indian paints and coatings market. This product significantly improves the long-lasting protection offered by paints and surface coatings. The new silicone resin, recently made available under the name SILRES® IC 368, has been formulated so that only 15 percent is sufficient to improve the UV and weathering resistance of the organic binder in a coating system - without detracting from the mechanical properties. Weathering and lab tests have shown that SILRES® IC 368 provides for substantially improved gloss retention, greater protection against weathering and an extended useful life. In addition, it also improves the thermal resistance of the coating system.

SILRES® IC 368 is a low-viscosity liquid and can be processed without organic solvents. Cooking equal proportions of alkyd and silicone resins reduces the viscosity by up to a factor of three compared with silicone solid resins. Thus, with SILRES® IC 368, blended resins can also be produced with an extremely high solid content and sufficiently low viscosity, for example for low-solvent, high-solid top coats.

The new intermediate has a variety of applications. It is suitable for modifying alkyd resins, hydroxyl functional acrylic resins and hydroxyl functional polyesters, which are typically used for the industrial coating of wood or metal or coil coating. This intermediate also sets new standards in effectiveness: when dispensed in the same amounts, binder manufacturers can use SILRES® IC 368 far more effectively than has previously been possible with other silicone intermediates.

For Low-Odor Interior Paints: VINNAPAS® EP 3360

For the first time on the Indian market, WACKER is presenting VINNAPAS® EP 3360, an aqueous dispersion based on vinyl acetate-ethylene copolymers (VAE), and stabilized with polyvinyl alcohol and emulsifiers. This product is particularly suitable for use in paints with medium to high pigment volume concentration (PVC > 65 percent), featuring very high scrub resistance and good formulation properties. Furthermore, VINNAPAS® EP 3360 is manufactured without using alkylphenol ethoxylates (APEOs). Thanks to the very low residual monomer content (< 200 ppm), it enables the formulation of low-odor interior paints with a low content of volatile organic compounds (VOC < 5 g/l) and without additional solvents.

VINNOL® Surface Coating Resins: Versatile and Economical

WACKER's VINNOL® product line offers a broad range of vinyl chloride and vinyl acetate copolymers, both with and without functional groups, enabling a wide variety of uses. VINNOL® H 30/48 M, a surface coating resin containing carboxyl groups, will be in the spotlight at PAINT INDIA. The product's superb solubility in pure ester is particularly impressive, resulting in a clear, color-free solution without having to use any ketones. Alongside the resulting application flexibility, savings are derived from the reduction in raw-material costs. This product can already be heat-sealed at lower temperatures, thanks to its higher vinyl acetate content in the polymer backbone. VINNOL® H 30/48 M is therefore perfectly suited for packaging thermosensitive pharmaceuticals and foodstuffs, such as cheese or yoghurt, thus adding to WACKER's extensive inks, paints and coatings portfolio.

New Silicone Additive for Interiors

Silicones have a long proven track record as water-repellent additives for exterior paints - now, WACKER has also developed new silicone additives for interior use, which were recently launched as the SILRES® BS 300 product line. Interior paints that have been modified with these additives are especially easy to process, offer a homogeneous application appearance - even in unfavorable light, and (provided they have an optimum paint formulation) are easy to clean, because dirt cannot easily penetrate the paint film.

Silicone additives can alter the surface energy of a prime coat in such a way that the second coat has a significantly longer open time. Just one or two percent of the weight of the new additives are sufficient to attain open times that are up to three times as long, depending on the prevailing ambient factors. This benefits both users in southern climes, where generally higher temperatures prevail, and users in northern regions in which rooms are more strongly heated. Paints formulated with the SILRES® BS 300 range can be mixed with less effort and are thus easier to apply. The silicone additive also provides for an improved wetting of the surface with paint, ensuring smooth, even drying. The new additives can thus contribute to a smoother surface of the paint coat - an effect that can even be felt when touched. The coating feels comparably finer than that of conventional paints, which also lends walls an almost silky tactile property.

In addition, WACKER has developed a new additive to increase the wet-scrub resistance of interior paints. Due to its high alkalinity (pH: 13), SILRES® BS 168 supports the high binding power of the dispersion, significantly increasing the wet-scrub resistance of the paint. The alkali additive serves to control the pH, thus facilitating the formulation of paints with long shelf-lives. SILRES® BS 168 itself contains no volatile organic compounds and therefore does not influence the VOC content of the paint.

Versatile and Hydrophobic: VINNAPAS® 8034 H

For facade systems, WACKER is unveiling a VINNAPAS® Plus polymer powder at PAINT INDIA: VINNAPAS® 8034 H for improving dry-mix mortars used in hydrophobic exterior applications. The special feature of this very hydrophobic polymer powder is that it is a general-purpose product for all facade applications, such as plasters, renders, cementitious powder paints or grout mortars. As a binder, it can also be used for sealing slurries. In the end product, it not only provides excellent water protection and improved workability, but also excellent adhesion to all substrates and improved flexibility. Thus, VINNAPAS® 8034 H is ideal for high-quality, hydrophobic applications in all aspects of the facade.

Further WACKER Product Highlights at PAINT INDIA

SILRES® HP 2000 for Weather-Resistant Coatings

SILRES® HP 2000 is an amino-functional silicone resin for highly weather resistant and easy-to-use coatings. As a curing agent, SILRES® HP 2000 provides epoxy coatings with the UV and weathering resistance of a polyurethane top coat. In many cases, one coat is sufficient instead of two. It also features durable gloss retention. The silicone resin cures quickly with cycloaliphatic epoxy resins even at room temperature, and allows the formulation of finished paints with a low VOC content (< 100="" g/l).="" silres®="" hp="" 2000="" is="" therefore="" eminently="" suitable="" for="" use="" in="" weather-resistant="" industrial="" coatings,="" marine="" and="" protective="" coatings,="" or="" infrastructure="" applications.="">

Silicone Resin Emulsion Paints for Effective Facade Protection

SILRES® BS silicone resin emulsion paints rank among the most advanced facade coating systems. They offer a good combination of outstanding properties of mineral and synthetic-resin-bound paints. These include very high water-vapor permeability, extremely low water uptake and tremendous durability. SILRES® BS products are innovative, environmentally-compatible raw materials for the production of water-repellent masonry coatings, and construction chemicals and materials.

SILRES® MSE 100 for Heat-Resistant Coatings

SILRES® MSE 100 is a liquid methoxyfunctional methyl polysiloxane resin for coating flues, chimney stacks and firing systems. This product offers heat-resistance in combination with the ability to cure in under 15 minutes, even at room temperature. SILRES® MSE 100 is an excellent binder for use in heat-resistant coatings such as industrial coatings, domestic appliances and automotive applications.

About WACKER

WACKER is one of the world-leading manufacturers of dispersible polymer powders and dispersions based on 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.

Source: WACKER


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