SIGMACOVER 520
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Mass density Volume solids Recommended dry film thickness Theoretical spreading rate Overcoating interval Full cure after Shelf life (cool and dry place) two component high solids epoxy tiecoat - final coat in epoxy underwater anticorrosive systems - epoxy tiecoat for use with Sigma antifoulings as specified - suitable for sea water immersion on underwater structures and ships hulls - extended recoating intervals ( see table) - easy application by airless spray and brush - meets VOC regulations for General Use category under Federal NESHAP for Shipbuilding and Repair regulations redbrown, grey, black - low sheen (data for mixed product) 5-8 mills (125 - 200 urn) depending on system and application method - previous coat; dry and free from any contamination - substrate temperature should be at least 5°F ( 3°C) above dew point mixing ratio by volume: base to hardener 80 : 20 - power agitate each component to uniform consistency before combining,then again after combining.DO NOT vary portions - when mixing the temperature of the base and hardener should be at least 59°F (15°C), otherwise extra solvent may be required. - too much solvent results in reduced sag resistance - thinner should be added after mixing the components - Relative humidity: maximum 85 % Induction time none Marine Coatings

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Recommended thinner Nozzle orifice Nozzle pressure 0 - 6%, depending on required thickness and application conditions Recommended thinner 0 - 5%, depending on required thickness and application conditions Recommended thinner theoretical spreading rate ft2/gal 231 with Sigma antifoulings 24 hours 12 hours 6 hours Marine Coatings

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substrate touch dry hard dry full cure Whilst it is always the aim of PPG Protective & Marine Coatings to supply the same product on a worldwide basis, slight modification of the product is sometimes necessary to comply with local or national rules/circumstances. Under these circumstances an alternative product data sheet is used. Explanation to product data sheets Safety indications Safety in confined spaces and health Explosion hazard - toxic hazard Safe working in confined spaces Directives for ventilation practice Marine Coatings

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SIGMACOVER 520 July 2010 LIMITATION OF LIABILITY The information in this data sheet is based upon laboratory tests we believe to be accurate and is intended for guidance only. All recommendations or suggestions relating to the use of the Sigma Coatings products made by PPG Protective & Marine Coatings, whether in technical documentation, or in response to a specic enquiry, or otherwise, are based on data which to the best of our knowledge are reliable. The products and information are designed for users having the requisite knowledge and industrial skills and it is the end-user's...

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