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All the data listed below are typical values obtained in standard conditions, at 20 °C room temperature and 50% relative humidity, and should not be used for specifications purposes.

Chemical properties of P.M.M.A., either cast or extruded


In general terms it can be said that our acrylic products are resistant at room temperature to most inorganic chemicals, aliphatic hydrocarbons, cycloaliphatic compounds, fat and oils, and at temperatures up to 60°C they are also resistant to dilute acids as well as dilute and concentrated solutions of most alkalis. Our products can be damaged from the action of chlorinated aliphatic hydrocarbons, ketones, alcohols, ethers, esters and aromatics. However their resistance to the weather conditions is excellent: as proven in a great number of successful outdoor applications, they resist very well to atmospheric agents, such as long term exposure to the sunlight or UV rays, wind and rain or sea water.

Chemical properties of Polycarbonate


Water is the chemical to which the products are exposed most frequently. High temperature water can cause hydrolytic degradation by attacking the carbonate linkages, breaking the polycarbonate polymer chain, and lowering impact and tensile strength. At standard room temperatures, there is no noticeable loss of properties after many years of contact with water. Contact with water at 60 °C and intermittent contact at temperatures up to 100 °C may have little effect on properties. Severe conditions, such as those in steam autoclaves, however, may alter the clarity and toughness of the polymer faster. Polycarbonate is resistant to dilute mineral and organic acids, animal and vegetable oils and fats and alcohols. Dilute alkaline solutions of sodium carbonate and bicarbonate produce no effect, but ammonium hydroxide and amines degrade the polymer. Exposure to chlorinated, aromatic and aliphatic hydrocarbons, as well as esters and ketones, should be avoided as these are excellent solvents for polycarbonate.