JOTAMASTIC 87English

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Technical Data JOTAMASTIC 87 Product description Jotamastic 87 is a two-pack surface-tolerant, abrasion resistant, high solids epoxy-based primer/topcoat which may be applied in high film thickness. Two hardeners (comp.B) are available, according to temperature conditions. Cures down to -5ºC by using cold climate comp. B. This product is a part of a complete system which is certified not to spread surface flames. Recommended use Steel where blast cleaning may not be possible, and where gloss
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  Technical Data JOTAMASTIC 87 Product description Jotamastic 87 is a two-pack surface-tolerant, abrasion resistant, high solids epoxy-basedprimer/topcoat which may be applied in high film thickness. Two hardeners (comp.B) areavailable, according to temperature conditions. Cures down to -5ºC by using cold climate comp.B. This product is a part of a complete system which is certified not to spread surface flames. Recommended use Steel where blast cleaning may not be possible, and where gloss retention is of minor importance. Can be used alone or in combination with various systems of primers and topcoats. Gives excellent corrosion protection both in salt and freshwater. If exposed to sunlight chalking may occur. Film thickness and spreading rate Standard comp. BMinimumMaximumTypicalFilm thickness, dry (µm) 150300200 Film thickness, wet (µm) 180365245 Theoretical spreading rate(m²/l) 5,52,74,1 Cold climate comp. BMinimumMaximumTypicalFilm thickness, dry (µm) 150250200 Film thickness, wet (µm) 200340270 Theoretical spreading rate(m²/l) 4,933,7 Physical properties Colour Limited number Solids (vol %)* 82 ± 2 Standard comp. B74 ± 2 Cold climate comp. B Flash point 35ºC ± 2 Standard comp. B (Setaflash)31ºC ± 2 Cold climate comp. B (Setaflash) Gloss Semigloss Gloss retention Fair Water resistance Very good Abrasion resistance Very good Solvent resistance Good Chemical resistance Very good Flexibility Good * Measured according to ISO 3233:1998 (E) JOTAMASTIC 87Page 1  Surface preparation All surfaces should be clean, dry and free from contamination. The surface should be assessedand treated in accordance with ISO 8504. Bare steel Cleanliness: Power tool cleaning to min. St 2, mill scale free (ISO 8501-1:1988). Improvedsurface treatment (blast cleaning to Sa 2½) will improve the performance. Shopprimed steel Clean, dry and undamaged approved blast-primer. Coated surfaces Clean, dry and undamaged compatible primer. Contact your local Jotun office for moreinformation. For maintenance UHPWJ to WJ2 (NACE No.5/SSPC-SP 12) or Power tool cleaning tomin. St 2 for rusted areas Other surfaces The coating may be used on other substrates. Please contact your local Jotun office for moreinformation. Condition during application The temperature of the substrate should be minimum +10°C (Std) (-5°C in CC) and at least 3°Cabove the dew point of the air, temperature and relative humidity measured in the vicinity of thesubstrate. Good ventilation is required in confined areas to ensure proper drying. Application methods Spray Use airless spray Brush Recommended for stripe coating and small areas, care must be taken to achievethe specified dry film thickness. Roller May be used for small areas but not recommended for first primer coat, howeverwhen using roller application care must be taken to apply sufficient material inorder to achieve the specified dry film thickness. Application data  Mixing ratio (volume) 6 parts Comp. A to 1 part Standard Comp. B4 parts Comp. A to 1 part Cold Climate Comp. B. Induction time 10 minutes. Pot life (23°C) 2 hours (standard Comp. B),1 hour (cold climate hardner) Thinner/Cleaner Jotun Thinner No. 17 Guiding data airless sprayPressure at nozzle 15 MPa (150 kp/cm² 2100 psi) Nozzle tip 0.58-0.79 mm (0.023-0.031 ) Spray angle 40-80° Filter Check to ensure that filters are clean. JOTAMASTIC 87Page 2  Drying time Drying times are generally related to air circulation, temperature, film thickness and number of coats, and will be affected correspondingly. The figures given in the table are typical with:* Good ventilation (Outdoor exposure or free circulation of air)* Typical film thickness* One coat on top of inert substrate Standard comp. BSubstrate temperature10°C23°C40°CSurface dry 8 h4 h2 h Through dry 24 h10 h4 h Cured   14 d7 d2 d Dry to recoat, minimum 24 h10 h4 h Dry to recoat, maximum 1 Cold climate comp. BSubstrate temperature-5°C0°C5°C10°C23°CSurface dry 24 h18 h12 h6 h2.5 h Through dry 48 h26 h18 h12 h5 h Cured  - d14 d7 d3 d2 d Dry to recoat, minimum 48 h26 h18 h12 h5 h Dry to recoat, maximum 1 - - - - -Provided the surface is free from chalking and other contamination prior to application, there1.is normally no overcoating time limit. Best intercoat adhesion occurs, however, when thesubsequent coat is applied before preceding coat has cured. If the coating has been exposedto direct sunlight for some time, special attention must be paid to surface cleaning andmattening/removal of the surface layer in order to obtain good adhesion.The given data must be considered as guidelines only. The actual drying time/times beforerecoating may be shorter or longer, depending on film thickness, ventilation, humidity, underlyingpaint system, requirement for early handling and mechanical strength etc. A complete systemcan be described on a system sheet, where all parameters and special conditions could beincluded. Typical paint system Jotamastic 87 Hardtop AS 2 x 200 µm 1 x 50 µm (Dry Film Thickness) (Dry Film Thickness) Other systems may be specified, depending on area of use Storage The product must be stored in accordance with national regulations. Storage conditions are tokeep the containers in a dry, cool, well ventilated space and away from source of heat andignition.Containers must be kept tightly closed. Handling Handle with care. Stir well before use. Packing size 20 litre unit Standard hardener: 16 litres Comp. A in a 20 litre container and 2.7 litres StandardComp. B in a 3 litre container20 litre unit Cold Climate hardener:16 litres Comp. A in a 20 litre container and 4 litres ColdClimate Comp. B in a 5 litre container JOTAMASTIC 87Page 3  Packing may vary from country to country according to local requirements. JOTAMASTIC 87Page 4
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