1 Technical Information TI/ES 1702 e Page 1 of 8 August 2005 ® = Registerd trademark of ® BASF Aktiengesellschaft AM 3 Powder Luwax ® Luwax AM 6 Powder Ethylene homopolymer waxes Matting agents and anti-setting agents for paints
2 ® TI/ES 1702 e August 2005 Page 2 of 8 AM 3 Powder Luwax ® Luwax AM 6 Powder Chemical nature Ethylene homopolymer waxes Properties ® Test methods Luwax AM 3 Powder ASTM DIN white powder Physical form 51007 104 – 108 °C D-3418 Melting point (DSC) 51801 D-3954 101 – 112 °C Dropping point (Ubbelohde) 2 N/mm Ball hardness at 23 °C approx. 20 (Fischer) 2 Melt viscosity at 120 °C D-2162 150 – 220 mm /s 51562 3 53479 0.910 – 0.925 g/cm Density at 23 °C D-792 Molar mass approx. 3500 g/mol ® AM 6 Powder Test methods Luwax DIN ASTM Physical form white powder Melting point (DSC) D-3418 104 – 109 °C 51007 Dropping point (Ubbelohde) 51801 107 – 114 °C D-3954 2 Ball hardness at 23 °C approx. 15 N/mm (Fischer) 2 Melt viscosity at 120 °C D-2162 1000 – 1400 mm /s 51562 3 Density at 23 °C 53479 D-792 0.910 – 0.930 g/cm Molar mass approx. 7000 g/mol The above information is correct at the time of going to press. It does not necessarily form part of the product specification. A detailed product specification is available from your local BASF representative. ® ® AM 3 Powder/ Luwax Storage AM 6 Powder have an unlimited shelf life in Luwax its original packaging, provided they are stored correctly in a dry place. The packaging needs to be inspected occasionally to ensure that it is still intact. ® ® Luwax AM 3 Powder/ Luwax Solubility AM 6 Powder is insoluble or, at most, only very sparingly soluble at room temperature in solvents conventionally used in paints. It is soluble at elevated temperatures, especially in non-polar solvents. The following tables shows the temperatures at which ® ® AM 3 Powder/Luwax Luwax AM 6 Powder form a clear 10 % solution in selected solvents. There is also a “cloud point” at which the wax begins to recrystallize on cooling. The clear point was measured by dissolving the wax completely before allowing it to recrystallize by cooling. The dispersion was then reheated until a clear solution formed. This method minimizes the influence of the particle size on the results that are obtained.
3 ® TI/ES 1702 e August 2005 Page 3 of 8 AM 3 Powder Luwax ® AM 6 Luwax Powder ® AM 3 Powder Luwax Cloud point Clear point Solvent approx. °C approx. °C 79 Mineral spirits 71 72 66 Xylene Toluene 71 65 Turpentine oil 75 70 ® A 75 68 Shellsol (Shell) ® Luwax AM 6 Powder Solvent Clear point Cloud point approx. °C approx. °C 77 69 Mineral spirits Xylene 64 71 Toluene 68 63 Turpentine oil 74 68 ® 73 66 Shellsol A (Shell) These 10 % solutions cool to form pastes with varying degrees of firmness. Applications ® ® AM 3 Powder/Luwax AM 6 Powder are very effective matting As a matting agent Luwax - agents for acid-curing paints and paints that contain cellulose nitrate, poly urethane resins and alkyd resins. The refractive indices of polyethylene waxes and the paints they are used to mat are very similar. They impart a silk finish without causing any cloudiness. ® ® AM 3 Powder/Luwax Paints that contain Luwax AM 6 Powder dry to form coatings that are very smooth and resistant to scratching and marring. The matting effect depends on the amount of wax added, but the relationship between gloss and wax content is not linear. A curve for ® ® AM 3 Powder/Luwax Luwax AM 6 Powder is given overleaf. A silk finish can be obtained by adding around 5 % wax, expressed as a ® proportion of the binder, but paints that contain Luwax AM 3 Powder/ ® Luwax AM 6 Powder are never completely lusterless; silica-based matting agents have to be added if a matt finish is required. Adding too much wax can cause shrinkage, which leads to cracking and similar defects. ® Luwax AM 3 Powder is more suitable for strongly polar systems, such as ® acid-curing paints, whereas Luwax AM 6 Powder is more effective in less polar media, such as in coatings that contain alkyd resins. These two waxes can be used in combination, and there is very little difference in their matting effects. ® Coatings that contain Luwax AM 6 Powder form harder films than those ® that contain Luwax AM 3 Powder, but the latter is more finely divided when it precipitates out of solution.
4 ® TI/ES 1702 e August 2005 Page 4 of 8 AM 3 Powder Luwax ® AM 6 Luwax Powder ® ® AM 3 and Luwax Matting curves for Luwax AM 6 in an one-component acid-curing coating. Dry film thickness = 10 μm. 80 70 60 Gloss % 60° 50 40 ® 3 AM Luwax ® AM 6 Luwax 30 20 10 0 7 1 1 2 3 4 5 6 0 1 8 9 1 g Matting agent per 100 g binder ® ® AM 3 Powder/Luwax AM 6 Powder, As an anti-setting agent As little as 0.5 – 1 % Luwax and water repellant expressed as a proportion of the total formulation, is sufficient to prevent pigments forming a sediment or, at least, to ensure that the sediment remains loosely aggregated. This can be achieved without any appreciable drop in glass. Low-viscosity wood stains are often pigmented with transparent iron oxides ® pigments. such as our Sicotrans ® ® AM 3 Powder/Luwax AM 6 Powder make coatings of this type Luwax more hydrophobic, as well as preventing them from settling. ® ® Adding Luwax As an anti-blocking agent AM 3 Powder/Luwax AM 6 Powder to air-drying coatings and lubricant and baking finishes at rates of 0.2 – 0.5 % is an effective means of preventing blocking.
5 ® TI/ES 1702 e August 2005 Page 5 of 8 AM 3 Powder Luwax ® Powder AM 6 Luwax Processing There are two methods of adding ® ® AM 3 Powder/Luwax AM 6 Powder to coatings. Luwax a) The wax can be dissolved by heating, usually in aromatic and/or aliphatic hydrocarbons. It is advisable to prepare a 10 % solution in solvents heated to 90 – 100 °C. The wax solution is then added directly to the paint, where it cools and precipitates. Paints should be at room tempera - ture when the hot wax solution is added. It should be stirred in slowly, stirring constantly. The paint can heat up if the wax is poured in too quickly or if it is not properly stirred. This causes coarse agglomerates to form, which cannot be properly redispersed once they are present. The temperature of paints should not be allowed to exceed 50 °C during mixing. Binders such as cellulose nitrate can precipitate if paints are poured into hot wax solutions. b) The wax is first of all dissolved in hot solvents. Cold solvents are then added, and the resulting paste is added to the paint. We would recommend dissolving ten parts of ® ® Luwax AM 3 Powder/Luwax AM 6 Powder in 40 parts of xylene at 100 °C. This solution is then slowly stirred into mixture of 30 parts of xylene and 20 parts of isobutyl acetate. Pastes prepared by this method should have a solids content of no more than 15 %. The matting effect is more pronounced the lower their wax contents, and paints dry to form smoother films.
6 ® TI/ES 1702 e August 2005 Page 6 of 8 AM 3 Powder Luwax ® Powder Luwax AM 6 Safety We know of no ill effects that could have resulted from using ® ® AM 3 Powder/Luwax Luwax AM 6 Powder for the purpose for which it is intended and from processing it in accordance with current practice. According to the experience that we have gained over many years and other ® ® information at our disposal, Luwax AM 3 Powder/Luwax AM 6 Powder does not exert any harmful effects on health, provided that it is used properly, due attention is given to the precautions necessary for handling chemicals, and the information and advice given in our Safety Data Sheet are observed. Note The data contained in this publication are based on our current knowledge and experience. In view of the many factors that may affect processing and application of our product, these data do not relieve processors from carrying out their own investigations and tests; neither do these data imply any guarantee of certain properties, nor the suitability of the product for a specific purpose. Any descriptions, drawings, photographs, data, pro- portions, weights etc. given herein may change without prior information and do not constitute the agreed contractual quality of the product. It is the responsibility of the recipient of our products to ensure that any proprietary rights and existing laws and legislation are observed. August 2005
7 ® TI/ES 1702 e August 2005 Page 7 of 8 Luwax AM 3 Powder ® Luwax AM 6 Powder
8 ® TI/ES 1702 e August 2005 Luwax AM 3 Powder Page 8 of 8 ® Luwax AM 6 Powder BASF Aktiengesellschaft Performance Chemicals for Detergents and Formulators 67056 Ludwigshafen, Germany www.basf.com/detergents-formulators Printed in Germany