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PPG SigmaCover 555 is a two-component, polyamide-cured epoxy anticorrosive tiecoat, used as the final coat in epoxy underwater anticorrosive systems, with excellent adhesion for antifoulings.
- Excellent water resistance
- Good abrasion and impact resistance
- No induction time - 4 hours pot life
- 48 hours curing time before water immersion service - Fully cured after 7 days
- Available in black or grey colours
- See below for more information on surface preparation, application details and curing times
PPG SigmaCover 522, a two-component, polyamide-cured epoxy anticorrosive tiecoat; the final coat in epoxy underwater anticorrosive systems with excellent adhesion for antifoulings.
Features & Benefits
- Final coat in epoxy underwater anticorrosive systems
- Excellent water resistance
- Epoxy anticorrosive with excellent adhesion for antifoulings
- Good abrasion and impact resistance
- No induction time
- 4 hours pot life
- 48 hours curing time before water immersion service
- Fully cured after 7 days
- See below for more information on surface preparation, application details and curing times
Reference | Colour | Size | Gloss Level |
---|---|---|---|
328960 | Black | 20 litres | Eggshell |
- | Grey | 20 litres | Eggshell |
Product Data
Two-component, polyamide-cured epoxy anticorrosive tiecoat
Data for mixed product at 20°C (68°F) | |
---|---|
Number of components | Two |
Mass density | 1.4 kg/l (11.7 lb/US gal) |
Volume solids | 56 ± 2% |
VOC (Supplied) | Directive 1999/13/EC, SED: max. 276.0 g/kg |
max. 387.0 g/l (approx. 3.2 lb/US gal) | |
Recommended dry film thickness | 75 - 150 µm (3.0 - 6.0 mils) depending on system |
Theoretical spreading rate | 7.5 m²/l for 75 µm (299 ft²/US gal for 3.0 mils) |
3.7 m²/l for 150 µm (150 ft²/US gal for 6.0 mils) | |
Dry to touch | 6 hours |
Overcoating Interval | Minimum: 8 hours |
Maximum: 3 days | |
Full cure after | 7 days |
Shelf life | Base: at least 24 months when stored cool and dry |
Hardener: at least 24 months when stored cool and dry |
Notes:
- See below for more information on surface preparation, application details and curing times
Surface Preparation
Recommended Substrate Conditions and Temperatures
Substrate conditions
- Previous coat must be dry and free from any contamination
Substrate Temperature & Application Conditions
- Substrate temperature during application and curing should be above -5°C (23°F)
- Substrate temperature during application and curing down to -5°C (23°F) is acceptable; provided the substrate is free from ice and dry
- Substrate temperature during application and curing should be at least 3°C (5°F) above dew point
Application
Instructions for Use
Mixing ratio by volume: base to hardener 86:14
- The temperature of the mixed base and hardener should preferably be above 15°C (59°F), otherwise extra thinner may be required to obtain application viscosity
- Adding too much thinner results in reduced sag resistance and slower cure
- Thinner should be added after mixing the components
Induction Time
Mixed Product Induction Time | |
---|---|
Mixed Product Temperature | Induction time |
Below 10°C (50°F) | 15 minutes |
Pot life
- 4 hours at 20°C (68°F)
Refer below for more information
Air Spray
Recommended thinner
- THINNER 91-92
Volume of thinner
- 0 - 5%, depending on required thickness and application conditions
Nozzle orifice
- 1.5 – 2.0 mm (approx. 0.060 – 0.079 in)
Nozzle pressure
- 0.3 - 0.4 MPa (approx. 3 - 4 bar; 44 - 58 p.s.i.)
Airless spray
Recommended thinner
- THINNER 91-92
Volume of thinner
- 0 - 5%, depending on required thickness and application conditions
Nozzle orifice
- Approx. 0.53 – 0.58 mm (0.021 – 0.023 in)
Nozzle pressure
- 12.0 - 15.0 MPa (approx. 120 - 150 bar; 1741 - 2176 p.s.i.)
Brush/roller
Recommended thinner
- THINNER 91-92
Volume of thinner
- Up to 5% THINNER 91-92 can be added if desired
Cleaning Solvent
Spreading Rate and Film Thickness
DFT | Theoretical spreading rate |
---|---|
75 µm (3.0 mils) | 7.5 m²/l (299 ft²/US gal) |
100 µm (4.0 mils) | 5.6 m²/l (225 ft²/US gal) |
150 µm (6.0 mils) | 3.7 m²/l (150 ft²/US gal) |
Note:
- Maximum DFT when brushing: 75 µm (3.0 mils)
Overcoating interval for DFT up to 150 µm (6.0 mils)
Overcoating with... | Interval | -5°C (23°F) | 0°C (32°F) | 5°C (41°F) | 10°C (50°F) | 20°C (68°F) | 30°C (86°F) | 40°C (104°F) |
---|---|---|---|---|---|---|---|---|
PPG antifoulings | Minimum | 24 hours | 24 hours | 24 hours | 12 hours | 8 hours | 6 hours | 6 hours |
Maximum | 10 days | 5 days | 5 days | 4 days | 3 days | 3 days | 48 hours |
Note:
- Surface should be dry and free from any contamination
Curing time for DFT up to 150 µm (6.0 mils)
Substrate temperature | Service- water immersion | Full Cure |
---|---|---|
-5°C (23°F) | 5 days | N/A |
5°C (41°F) | 4 days | 21 days |
10°C (50°F) | 48 hours | 15 days |
20°C (68°F) | 24 hours | 7 days |
30°C (86°F) | 18 hours | 5 days |
Notes:
- Adequate ventilation must be maintained during application and curing (please refer to information sheets 1433 and 1434)
- In exceptional cases SIGMACOVER 555 may be applied at lower substrate temperatures (down to -15°C (5°F)) provided that the surface is free from ice and other contamination. In such cases special care must be taken to avoid thick film application as this may lead to checking/crazing or solvent entrapment. It should be clear that application at lower temperatures will require additional thinning to obtain application viscosity, however this will affect the sag resistance of the applied coating and can induce solvent retention. Optimal curing and designed product properties will only be achieved when minimum required substrate temperature is reached
Pot Life (at application viscosity)
Mixed product temperature | Pot life |
---|---|
5°C (41°F) | 8 hours |
10°C (50°F) | 6 hours |
20°C (68°F) | 4 hours |
30°C (86°F) | 2 hours |
Safety Precautions
- For paint and recommended thinners, see information sheets information sheet 1430, information sheet 1431 and the relevant Material Safety Data Sheets in the attachments section above
- This is a solvent-borne paint and care should be taken to avoid inhalation of spray mist or vapour, as well as contact between the wet paint and exposed skin or eyes
References
- Explanation to product data sheets (information sheet 1411)
- Safety Indicators (information sheet 1430)
- Safety in Confined Space and Health Safety, Explosion Hazard - Toxic Hazard (information sheet 1431)
- Safe Working in Confined Spaces (information sheet 1433)
- Directives for Ventilation Practice (information sheet 1434)
Data sheet
- Manufacturer
- PPG
- For Use By
- Professional Use
- For Use On
- Steel
- Application Method
- Brush, Roller, Spray
- Sheen
- Eggshell
- Colour
- Standard / Ready Mixed
- Single, Two or Three Pack
- Two-Pack
- Pack Size
- 20L
- Parts
- Two
- Base Type
- Solvent-borne
- Solvent
- Epoxy
- Mixing Ratio
- 86:14
- Suitable Substrates
- Steel
- Key Features
- Excellent adhesion for antifoulings
- Application
- Brush, Roller, Spray
- Touch Dry (at 20°C)
- -
- Dry to Handle (at 20°C)
- -
- Dry to Recoat (at 20°C)
- 8 hours
- Fully Cured (at 20°C)
- 7 days
- Pot Life (at 20°C)
- 4 hours
- Coverage
- 7.5 m²/l for 75 µm/3.7 m²/l for 150 µm
- Recommended Thinner/Cleaner
- 91-92/90-53
- Unit Contents
- Base & hardener
- Compatible Primers
- -
- Compatible Topcoats
- -
- Max. Application Temperature
- -
- Min. Application Temperature
- -5°C (23°F)
- Density
- 1.4 kg/l (11.7 lb/US gal)
- Solids by Volume
- 56 ± 2%
- Heat Resistance (up-to)
- -
- VOC
- Directive 1999/13/EC, SED: max. 276.0 g/kg max. 387.0 g/l (approx. 3.2 lb/US gal)
- Shelf Life (Once Opened)
- 24 months (base & hardener)
- UN Number (Activator)
- UN3469
- UN Number (Base)
- UN1263
- Base Type
- Solvent-Borne
- Suitable For Use On
- Steel
- Finish
- Eggshell
- Application Method
- Brush
- Application Method
- Spray
- Application Method
- Roller
- Product Usage Type
- Topcoat
- Product Range
- SigmaCover
- Colour Family
- Black
- Categorised As
- Marine Paints > Antifouling Primers & Tie Coats
- Seasonal
- Cold Weather
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IMPORTANT SHIPPING & DELIVERY INFORMATION
PPG SigmaCover 555 is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT
PPG Thinner 90-53
This thinner has been developed by PPG Protective and Marine Coatings for use with selected paint products.
PPG Thinner 91-92
This thinner has been developed by PPG Protective and Marine Coatings for use with selected paint products.