SIGMACOVER 620

SIGMAZINC 158

Two-component, moisture-curing zinc (ethyl) silicate  primer  

PRINCIPAL CHARACTERISTICS

• Certificate for ASTM A-490 class 'B' for slip coefficient
• Complies with the compositional requirements of SSPC-Paint 20, Level 2
• Anticorrosive primer for structural steel
• Suitable as a system primer in various paint systems based on unsaponifiable binders
• Galvanic action eliminates sub-film corrosion
• Can withstand substrate temperatures from –90°C (–130°F) up to 400°C (750°F), under normal atmospheric exposure conditions
• When suitably topcoated provides excellent corrosion protection for steel substrates up to 540°C  (1000°F)
• Good low-temperature curing
• Good impact and abrasion resistance
• Must not be exposed to alkaline (more than pH 9) or acidic (less than pH 5.5) liquids

• Gray, greenish gray
• Flat

SIGMAGUARD 720

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)

• Light green, gray
• Gloss

SIGMACOVER 435

Two-component, high-build, micaceous iron oxide-pigmented, polyamide-cured recoatable epoxy    coating   PRINCIPAL CHARACTERISTICS

• 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 durability
• Tough, with long-term flexibility
• Resistant to temperatures up to 200°C (390°F) (see SYSTEM SHEET 4062)

• Light gray (9553-05), dark gray ( 9558-05), green (9441-05), aluminum (9590-05)
• Eggshell