PPG SigmaCover 555

7905

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

**Available for delivery - see Delivery Options below**

Colour
Size
Finish
£228.90
VAT excluded

£274.68 Tax incl.
Quantity

Description

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

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


Product Details
7905

Data sheet

Manufacturer
PPG
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
Attachments
Download


Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.


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