Luwax LG Flakes - BASF

1 = Registered trademark of BASF AktiengesellschaftLuwax LG FlakesMontanic Ester Wax Hard montanic ester wax, very easy to emulsify. Can be made into very finely divided emulsions for use in InformationTI/EVD 1128 e November 2005 Page 1 of 8 Supersedes edition dated September 1992TI/EVD 1128 e November 2005 Page 2 of 8 Luwax LG FlakesChemical nature Montanic ester waxProperties Unit Test methods DIN ASTM Physical form Yellow Flakes Dropping point C 51801 D-3954 77 83 (Ubbelohde) Penetrometer dmm 51579 D-1321 approx.

2 1 value at 23 C Acid number mg KOH/g ISO 2114 D-1386 25 35 Saponifaction mg KOH/g ISO 3681 D-1387 135 160 number Melt viscosity mm2/s 51562 D-2162 approx. 13 (120 C) Density at 23 C g/cm3 53479 D-792 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 Luwax LG Flakes has an unlimited shelf life in its original packaging, provided it is stored correctly in a dry place.

3 The packaging needs to be inspected occasionally to ensure that it is still Luwax LG Flakes is insolu ble in water and insolu ble or only very sparingly so lu ble in all conve ntional organic solvents at room tempera ture. It is solu ble at elevated tempera tures in aliphatic, aromatic and chlori nated hydroca rbons and most other solvents that are not too polar. Solutions of Luwax LG Flakes cool to form wax dispersions in the form of a mobile liq uid. The follo wing table shows the tempera ture at which Luwax LG Flakes forms a clear 10 % solution in selected solvents.

4 There is also a cloud point at which the wax begins to recrysta llize on cooling. The clear point was measured by redissolving a dispersion of wax crystals in the order to prevent any undissolved pastilles or powder from influencing the results. Solvent Boiling point Clear Cloud (All figures are appoximate) of solvent point point Mineral spirits 140 200 C 65 C 55 C Tetrachloroethylene 121 C 50 C 40 C Toluene 111 C 50 C 40 C Turpentine oil 140 180 C 60 C 45 CTI/EVD 1128 e November 2005 Page 3 of 8 Luwax LG FlakesMiscibility Luwax LG Flakes can be blended with many other types of waxes, resins and polymers simply by melting them and the stirring or kneading them together.

5 The compatibility of Luwax LG Flakes with the substances listed below was determined by melting them and mixing them together in the ratios 9 : 1 and 1 : 9. With only three exceptions, a homogenous mixture was formed in solid and li q uid form in all cases. 9 :1 1: 9 Beeswax + + Block paraffin wax + + Candelilla wax + + Carnauba wax + + Crude montan wax + Fischer-Tropsch wax + + Ketone resins (Laropal K types) + + Luwax E + + Luwax LG Flakes + + Luwax LGE Flakes + + Luwax OP Powder/ Flakes + Luwax V Flakes + + Microcrystalline wax, hard, plastic + + Microcrystalline wax, oxidized + + Oxidized polyethylene wax + (e.)

6 G. Luwax OA Pastilles and Luwax OA2 Pastilles/Powder) Polyisobutylene (Oppanol B types) + + + = Forms homogeneous mixture = Does not form homogeneous mixturePreparing emulsions It is very easy to emulsify Luwax LG Flakes . Very finely divided wax emulsi-ons can be obtained which, providing the emulsifier is added in the correct proportions, dry to form a glossy film. Emulsions can also be prepared from mixtures of hard and soft microcrystalline waxes, oxidized microcrystalline wax, and emulsifiable polyethylene waxes.

7 Anionic and nonionic emulsifiers can be used. Emulan OC, a fatty alcohol ethoxylate, is a nonionic emulsifier typically used for Luwax LG Flakes . Emulsions prepared with Emulan OC are very stable at high temperatures. Special amine soaps can be used to prepare anionic emulsions. Soaps can be prepared with amines such as 3-methoxypropylamine, methyl-propanolamine, diethylethanolamine and triethanolamine. These anionic wax emulsions differ from nonionic emulsions in that they are more transparent. They appear to take on a brownish colouration because of their particle size: emulsions with an average particle size of less than 100 m tend to scatter light rather than reflect it.

8 Emulsions are prepared by melting a mixture of wax and emulsifier in hot water. The water can be added to the wax or vice versa. If the water is added to the wax, a water-in-oil emulsion is obtained initially, but the phases are reversed at lower wax concentrations. Alkalis such as the amines listed above are usually added to the melted wax. They can be diluted in advance if necessary with three times their volume of boiling water. Fatty acids can precipitate out of solution in hard water, and this can prevent them forming soaps with the amines.

9 This entails that anionic wax emulsions have to be prepared with soft water. Hard water can be softened with our Trilon types. Nonionic emulsifiers are largely insensitive to water hardness, and nonionic emulsions can be prepared with moderately hard water. TI/EVD 1128 e November 2005 Page 4 of 8 Luwax LG FlakesEmulsions prepared from Luwax LG Flakes usually have a final concen-tration of 12 15 %. Concentrated emulsions with solids contents of up to 30 % can also be prepared, which can then be mixed with other liq uids such as polymer dispersions.

10 Concentrated emulsions can also be used to save space and energy. They can be diluted down to their final concentration by q uickly heating them to a fairly high temperature and then adding cold water. The usual preservatives have to be added to wax emulsions to prevent them from being attacked by bacteria and fungi. Suggested formulations Nonionic wax emulsions 1 2 Luwax LG Flakes 8 Paraffin wax 2 (f. p. 52 54 C) Emulan OC 2 Water 88 Anionic wax emulsions 3 4 Luwax LG Flakes 5 Luwax OA Pastilles 5 Hard microcrystalline wax 5 (f.)