Wacker is presenting  two new polymer dispersions. PRIMIS SAF 9000 is designed for the dirt-repellent treatment of walls, concrete and stone floors. This copolymer has a special composition that is both oil-resistant and hydrophobic, making the end products resistant to many different types of stains – from coffee and lipstick to colored pencils. PRIMIS KT 3000 is a high-performance additive, which allows exterior wall paints and plasters to set quickly and reliably, even at low temperatures, making coatings resistant to the effects of weathering after a short time. Wacker also is presenting the dispersible polymer powders VINNAPAS 5544 N for smooth and flexible surfaces such as diatom ooze and VINNAPAS 7031 H for decorative plasters.

Thanks to its special composition, the new PRIMIS SAF 9000 is both water and oil repellent. The acrylic ester-based dispersion contains extremely fine particles and therefore distributes evenly into the micro- and sub-micropores of the treated surface, which provides good mechanical properties, such as abrasion resistance and durability.

PRIMIS SAF 9000 can be used in dilute form for dirt-repellent treatment of decorative mineral surfaces, such as self-leveling flooring compounds and concrete floors. It provides long-term protection against the penetration of water or oil-based substances into the pores without impacting the appearance or feel of the flooring.

PRIMIS SAF 9000 can also be used to formulate so-called “easy-to-clean” interior wall paints which are resistant to a whole host of substances – from tea and coffee to lipstick, mustard or colored pencils and mark pen. Just adding 10-20 percent of the dispersion in relation to the main binder is enough to allow dirt to be simply wiped off the wall without trace just using a cloth with household dishwashing detergent diluted with water. The new PRIMIS SAF 9000 dispersion is an ideal option for formulating easy-to-clean, dirt-repellent surface treatments for a wide range of interior and exterior applications.

“This product was developed particularly for the China market,” said Alvin Hu, vice president, Greater China, Wacker Polymers. “The main feature of this product is it is low VOC and low odor, particularly for interior coatings. The product debuted last year and we are promoting the product at CHINACOAT.

The additive PRIMIS KT 3000, based on zinc acetate and polyethyleneimine, creates a kind of gel that distributes homogeneously in the coating and forms a stable polymer network forms even when atmospheric humidity is high and temperatures are only 5 °C. It considerably shortens the critical drying time to six hours for wall paints and plasters that are formulated with the additive. The product can readily be mixed with WACKER’s VAE dispersions of the VINNAPAS range. In this way, PRIMIS KT 3000 makes it possible to perform outdoor painting work in late autumn or spring in cooler regions, too.

The dispersible polymer powder VINNAPAS 5544 N is especially suitable for formulating highly flexible mortars with very good adhesion to inorganic and organic substrates and excellent and scrub resistance. The product is free of odor. Without intentional add of formaldehyde, it enables the formulation of low-emission end products (formaldehyde <5PPM). It also offers high flexibility and easy-to-scrape properties. Meanwhile, with very fine particles, the product is perfect for applications that require very smooth surfaces, such as diatom ooze and skim coats. In addition to enhancing crack resistance, its excellent dispersibility can significantly improve the workability of final products.

VINNAPAS 7031 H is a flexible dispersible polymer powder with a hydrophobic effect and very good workability. Compounds modified with VINNAPAS® 7031 H exhibit improved flexural strength, deformability, crack and whiskering resistance, as well as improved cohesion and adhesion to substrates. It also significantly reduces water absorption and shrinking percentage of decorative plasters.