Epokron is an anticorrosive primer made of two components: pigments, fillers and modifiers in an epoxy resin solution plus an amine hardener. It is used on steel structures, bridges and pipelines in all climatic regions and placement categories per GOST 15150 and ISO 12944, including burial in soil; the Liteyny Bridge and the Shafirovsky overpass in Saint Petersburg were painted with the Epokron + Kronos-Deko system. The primer goes under polyurethane, acrylic-urethane and epoxy enamels and is applied at temperatures from −10 °C.
| Manufacturer | Kronos SPb — AO “KRONOS SPb”, Saint Petersburg |
|---|---|
| Type | epoxy primers |
| Base | Two-component, solvent-borne: base — pigments, fillers and modifiers in an epoxy resin solution; hardener — solution of a modified amine |
| Colour | grey, red-brown |
| Application method | brush, roller, spatula; air spray (3–4 bar, nozzle 1.8–2.2); airless spray (at least 180 bar, nozzle 0.013–0.025″); thinning max. 10 % with “Kronos-Deko” thinner |
| Application temperature | from −10 to +35 °C; relative humidity max. 85 %; surface at least 3 °C above the dew point; keep the primer for 24 h at a temperature not below +15 °C |
| Drying | to degree 3: 24 h at 5 °C, 16 h at 10 °C, 8 h at 15 °C, 4 h at 20 °C; recoat interval less than 1.5 h; pot life at least 4 h at 20 °C |
| Key properties | for repairs — St 2 per ISO 8501-1 |
| Compatible materials | polyurethane, acrylic-urethane and epoxy enamels, incl. the enamel “Kronos-Deko”; adhesion layer on aluminium and galvanised steel |
| Shelf life | 24 months from the date of manufacture; storage from −40 to +40 °C |
| Standards | TU 2312-158-20504464-2013; STO 01393674-007-2019; OTT-25.220.01-KTN-097-16 (PJSC Transneft) |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Spray-applied polyurea-urethane coating with 100 % solids for pipes and fittings of underground gas pipelines, service life at least 30 years.
Epoxy primer-enamel with 86±2 % volume solids for hydraulic structures and equipment, categories Im1–Im4 per ISO 12944.
Sacrificial epoxy primer with zinc for steel structures in the atmosphere and at elevated humidity, more than 90 % non-volatile matter.
Hand-applied repair mastic for Forpol-Nafta coatings on gas pipeline pipes and fittings, pot life of the mix more than 45 min.
Silver paint for steel structures in temperate and cold climates, applied without a primer on ferrous metals and aluminium alloys.
Acrylic enamel for steel and reinforced concrete bridge structures, protects against corrosion and carbonation, service life at least 10 years.
