Celanese Emulsions Mowilith LDM 1780 Technical Data Sheet Version 1 - Issue 2004/12 CharacteristicsStabilization Mowilith LDM 1780 is a plasticizer-free aqueous dispersion based on vinyl acetate and ethylene. The dispersion has a low content of volatile organic compounds. Surfactants and polymer compounds Recommended Application Areas Interior paints Exterior paints Deep shade paints Plasters and textured coatings Specification These technical data are determined for each lot before its release by our quality control laboratory. UnitValueDev. Solids content (DIN EN ISO 3251; 2 h; 105 C)%50 1 Viscosity (DIN EN ISO 2555; Spindle no. 3; 20 rpm; 23 C) Brookfield viscosimeter RVT mPas2 000 1 500 pH value (DIN ISO 976)4.5 0.5 Additional Data These data are solely to describe the product. They are not subject to constant monitoring or part of the specification. UnitValue Dispersion Particle sizemapprox. 0.10 - 0.45 Minimum film forming temperature (MFFT) (DIN ISO 2115)Capprox. 0 Film * Appearanceslightly opaque, soft, tough Glass transition temperature Tg (DIN 53 765; DSC; heating rate 10 K/min)Capprox. 12 * dried under standard atmospheric conditions at 23 C and 50 % relative humidity (DIN EN 23 270). Applications Mowilith LDM 1780 is suitable for the formulation of interior coating systems with a good scrub resistance. The Emulsion is also suitable for exterior coatings. Processing Mowilith LDM 1780 dries above 0 C to form a crack-free and flexible film. The pigment binding power of the dispersion is very high. The usual titanium dioxide and coloured pigments as well as fillers and texturing grains may be used for the formulation of paints and resin-bound plasters. To ensure an adequate storage stability long term storage trials are recommended at any rate, especially when fillers and coloured pigments with a large specific surface area are chosen. In addition to the widespread used polyphosphates the salts of low molecular weight polyacrylic acids (e. g. Mowiplus XW 330) or polycarboxylic acids working as a dispersing agent should also be used to achieve further stability. Depending on the pigments and extenders the required quantity is between 0.1 and 0.4 % active substance relative to the pigment/extender mixture. Many thickeners are usable to adjust the desired viscosity of the paint and to improve its processability. Very good results are achieved by employing cellulose ethers with retarded swelling and medium to high molecular weight. Associative PU thickeners can be used as well alone or in combination. The use of acrylic thickeners may cause some stability problems. A lot of commercially available defoamers can be included in order to prevent excessive foaming in the paints. Trials must be carried out to determine the most suitable grades and the correct concentration. Organic pigments should be tested for their suitability for exterior paints, especially in the case of pastel tones. Preservation and Storage The dispersion contains some initial preservatives to prevent attack by micro organisms. In order that the product is also sufficiently protected against microbial contamination during further storage in opened drums or storage tanks a suitable preservative should be added despite our preliminary preservation measures and the tanks and pipework should be kept adequately clean. Prior to use Mowilith LDM 1780 should be stored for no longer than six months at temperatures as constant as possible between 5 and 25 C and must be protected from frost and direct exposure to sunshine. Furthermore it must be ensured that already opened drums or containers are always tightly closed. Further information on this topic can be found in our brochure Transport, Storage and Preservation of Mowilith Emulsions. The technical data ascertained by our quality control laboratory at the time of product release may vary according to the storage time and storage conditions and may deviate from the stated limits. Industrial Safety and Environmental Protection Not a hazardous substance within the meaning of the current Dangerous Substances Regulations (GefStoffV). A safety data sheet is available on request. This information is based on our present state of knowledge and is intended to provide general notes on our products and their uses. It should not therefore be construed as guaranteeing specific properties of the products described or their suitability for a particular application. Any existing industrial property rights must be observed. The quality of our products is guaranteed under our General Conditions of Sale. Celanese Emulsions GmbH Industriepark Hchst D-65926 Frankfurt am Main Tel.: +49 69 305 2876 Fax: +49 69 305 16420