PPG - Sigmacover 456 - Epoxy Coating is a two component high build polyamide cured re-coatable epoxy coating for metal and concrete structures that have been exposed to marine or atmospheric conditions.

Features

• General-purpose epoxy buildcoat or finish in protective coating systems, for steel and concrete structures exposed to
  atmospheric land or marine conditions
• Easy application, both by airless spray and brush
• Cures even at temperatures down to -10°C (14°F)
• A high relative humidity (maximum 95%) during application and curing does not influence the quality of the coating
• Good adhesion on most aged, sound alkyd, chlorinated rubber and epoxy coatings
• Can be recoated with various two-component and conventional coatings, even after long weathering periods
• Resistant to water and splash of mild chemicals
• Excellent corrosion resistance
• Tough, with long-term flexibility

Recommended Substrate Condtions and Temperatures

Substrate conditions

• Compatible previous coat must be dry and free from any contamination

Substrate temperature

• Substrate temperature during application and curing down to -10°C (14°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

Instructions For Use

Mixing ratio by volume: base to hardener 82:18

• Adding too much thinner results in reduced sag resistance
• The temperature of the mixed base and hardener should be above 10°C (50°F), otherwise extra thinner may be required to obtain application viscosity
• Thinner should be added after mixing the components

Air spray

Recommended thinner

THINNER 91-92

Volume of thinner

5 - 10%, depending on required thickness and application conditions

Nozzle orifice

2.0 – 3.0 mm (approx. 0.079 – 0.110 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. 0.48 – 0.58 mm (0.019 – 0.023 in)

Nozzle pressure

15.0 MPa (approx. 150 bar; 2176 p.s.i.)

Brush/roller

Recommended thinner

THINNER 91-92

Volume of thinner

0 – 5%

Cleaning solvent

THINNER 90-53