Modarez® PW 363 is a polyacrylate based , VOC - free and silicon - free levelling additive for water borne coatings. It prevents from levelling problems and enhances surface appearance of coatings. MODAREZ ® PW 363 How does it work? Levelling additives based on polyacrylates are not fully compatible with the liquid coating. This enables them to migrate at the liquid/air interface. Very often, they also have a high molecular weight that make them rather immobile at the surface. By positioning at the inter face, t he additive prevents from disparities in surface tension that can occur during application. It allows a better homogenization of this one at the liquid/air interface. This helps to reduce short waves phenomenon that gives an orange peel effect and s mooth the surface of the coating. The levelling is therefore much improved. Illustration In a classical water borne white paint based on Acronal Eco 6716 ( styrene - acrylic emulsion - BASF), 2 %* of Modarez ® PW 363 is introduced under stirring. The paint is applied on aluminium Q - panels A35 using a 100 μm K - coater. * 2 % delivery form on total formulation As illustrated on pictures bellow, using Modarez ® PW 363 improves considerably the levelling and flow. In this case, it helps to minimize the marks of the applicator During liquid coating application (spray - gun or brush application for example), many surf ace defects can occur. The surface may have waves (orange peel), craters, pin - holes... These imperfections are directly due to surface tension differences and can be corrected by using a levelling agent. Characteristics P olyacrylate levelling agent s bring important properties in coatings : - Reduce orange peel - Improve DO I - Improve flow and levelling - P revent from ghosting and clouding effect - Prevent from cr a ters, fish - eyes, pin - holes - Do not affect inter coat adhesion Modarez ® PW 363 can also improve the open time, without extend ing the drying time. This allows a better handling or a decrease of the level of coalescing agents (see adjacent graph) Furthermore, Modarez ® PW 363 presents wetting properties as well. It can act as a co - solvent, or it can be used as a grinding resin for pigment concentrates. As such it strongly develops colour strength. Modarez ® PW 363 VOC - free No negative effect on intercoat adhesion No negative effect on water resistance Silicon - free Levelling improvement Open time improvment Water borne white paint based on Acronal Eco 6716 containing 2% Modarez ® PW 363 Modarez ® PW 363 Very good performances in flow and levelling for w aterborne coatings VOC - free, which allows to decrease or remove VOC based coalescing agents in formulations. Good compatibility to various binders Recommended dosage: 0.5 – 3.0 % delivery form on total formulation. Up to 5% for a n open time improvement. Blank PW 363 Drying time 30 31 Open time 8 17 0 5 10 15 20 25 30 35 Time (min) Open time measurement MODAREZ ® PW 363 SYNTHRON www.synthron.com 6, rue Barbès – CS80050 – 92532 LEVALLOIS - PARIS cede x (France) Phone: + 33 (0) 141341400 Fax + 33 (0) 141341416 e - mail: postmaster@protex - international.com