Protekron — two-component zinc-rich epoxy primer
Sacrificial epoxy primer with zinc for steel structures in the atmosphere and at elevated humidity, more than 90 % non-volatile matter.

Kronos-TN is a ready combination of two materials: the epoxy primer “Epokron” and the acrylic-urethane enamel “Kronos-Deko” in the TN modification. The system was developed on the basis of the requirements of OTT-25.220.01-KTN-097-16, under which it belongs to the coating types AKP C3, C4 and C5-M (variants I and II). Its purpose is above-ground pipelines and the outer surfaces of tanks for crude oil, petroleum products and fire-fighting water reserves, including under thermal insulation; the coating withstands temperature changes from −60 to +60 °C and humidity up to 100 %.
| Manufacturer | Kronos SPb — AO “KRONOS SPb”, Saint Petersburg |
|---|---|
| Type | anticorrosive material |
| Base | Anticorrosion coating (AKP) system: epoxy primer “Epokron” of the TN modification + acrylic-urethane enamel “Kronos-Deko” of the TN modification |
| Colour | to the RAL catalogue |
| Drying | tack-free: primer 4 h, enamel 3 h at 20 °C; recoat interval 4 h; pot life: primer 4 h, enamel 3 h at 20 °C |
| Key properties | Coating type per OTT-25.220.01-KTN-097-16: AKP C3 (I), C3 (II), C4 (I), C4 (II), C5-M (I), C5-M (II), Resistance to temperature changes: from −60 to +60 °C, Resistance to humidity changes up to 100 % |
| Compatible materials | primer “Epokron-TN” + enamel “Kronos-Deko-TN”; “Kronos-Deko” thinner |
| Standards | TU 20.30.22-206-20504464-2019; OTT-25.220.01-KTN-097-16; RD-23.040.00-KTN-088-14; RD-23.020.00-KTN-280-19 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Sacrificial epoxy primer with zinc for steel structures in the atmosphere and at elevated humidity, more than 90 % non-volatile matter.
GF-021 primer from AO “KRONOS SPb” for steel structures and equipment under alkyd and oil enamels, dries in max. 35 min at 105 °C.
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Epoxy primer-enamel with 86±2 % volume solids for hydraulic structures and equipment, categories Im1–Im4 per ISO 12944.
Polyurea-urethane coating for gas pipelines, CS and UGS: service from −60 to +80 °C, briefly up to +230 °C.