SIGMAGUARD 720 4 pages DESCRIPTION April 2009 Revision of January 2007 two component reinforced high solids polyamine adduct cured epoxy coating PRINCIPAL CHARACTERISTICS – tank coating with good chemical resistance against a wide range of chemicals – short curing periods – good low temperature curing – easy to clean – Recognized corrosion control coating (Lloyd's register), see sheet 1886 COLOURS AND GLOSS light green, grey - gloss BASIC DATA AT 20°C (1 g/cm³ = 8.25 lb/US gal; 1 m²/l = 40.7 ft²/US gal) (data for mixed product) Mass density Volume solids VOC (supplied) 1.4 g/cm³ 78 ± 2% max. 163 g/kg (Directive 1999/13/EC, SED) max. 233 g/l (approx. 1.9 lb/gal) 125 µm * 6.2 m²/l for 125 µm * 7 - 8 hours at 5°C, 5 - 6 hours at 10°C, 2 - 3 hours at 20°C min. 8 hours * max. 28 days * see curing table * Recommended dry lm thickness Theoretical spreading rate Touch dry after Overcoating interval Full cure after (data for components) Shelf life (cool and dry place) at least 12 months * see additional data RECOMMENDED SUBSTRATE CONDITIONS AND TEMPERATURES – steel; blast cleaned to a minimum of ISO-Sa2½, blasting prole 40 - 70 µm – previous coat; dry, free from any contamination and sufciently roughened if necessary – substrate temperature must be above 5°C and at least 3°C above dew point during application and curing SYSTEM SPECIFICATION tankcoatings system sheet: 3320 page 1/4

SIGMAGUARD 720 April 2009 INSTRUCTIONS FOR USE mixing ratio by volume: base to hardener 75 : 25 – the temperature of the mixed base and hardener should preferably be above 15°C, otherwise extra solvent may be required to obtain application viscosity – too much solvent results in reduced sag resistance and slower cure – thinner should be added after mixing the components Induction time allow induction time before use 15°C - 15 min. 20°C - 10 min. 25°C - 5 min. Pot life 1.5 hour at 20°C * * see additional data AIRLESS SPRAY Recommended thinner Volume of thinner Nozzle orice Nozzle pressure Thinner...

SIGMAGUARD 720 April 2009 Overcoating table for SigmaGuard 720 for dft up to 125 µm substrate temperature 5°C 10°C 20°C 30°C 40°C minimum interval 32 hours 24 hours 8 hours 4 hours 3 hours maximum interval 28 days 28 days 28 days 14 days 7 days – surface should be dry and free from any contamination Curing table for dft up to 125 µm substrate temperature min. curing time of SigmaGuard 720 tankcoating system before transport of aliphatic petroleum products and ballast water and tanktest with sea water 10 days 7 days 5 days 3 days 2.5 days 1.5 day 5°C 10°C 15°C 20°C 30°C 40°C cargoes without note...

SIGMAGUARD 720 April 2009 REFERENCES Explanation to product data sheets Safety indications Safety in conned spaces and health safety Explosion hazard - toxic hazard Safe working in conned spaces Directives for ventilation practice Cleaning of steel and removal of rust Specication for mineral abrasives see information sheet 1411 see information sheet 1430 see information sheet 1431 see information sheet 1433 see information sheet 1434 see information sheet 1490 see information sheet 1491 LIMITATION OF LIABILITY The information in this data sheet is based upon laboratory tests we believe to be...