QTP® 4571 — highly elastic membrane under polymer floors
Polymer-hybrid composition with 700 % elongation — a membrane under rigid coatings, a chemical-resistant sealant and waterproofing.

Application on damp surfaces is the key property of this water-reducible epoxy primer. It is used neat or with quartz, for impregnating fresh and old concrete and screeds, and for protecting fresh concrete during equipment installation before the polymer coating is applied. The solids content is 54 % and compressive strength 85 MPa. Continuous heat resistance is up to +70 °C.
| Manufacturer | QTP — OOO “KTP”, Noginsk |
|---|---|
| Type | floor primers |
| Use | production workshops, warehouses and logistics, wet rooms |
| Base | two-component water-reducible colourless epoxy primer; solids content 54 % |
| Colour | colourless |
| Packaging | 20.00 kg kit: component A 10 kg (20 l pail) + component B 10 kg (10 l canister) |
| Application method | primer (neat resin or with quartz), including on damp surfaces; impregnation of fresh and old concrete and cement-sand screeds; protection of fresh concrete during equipment installation before the polymer coating is applied |
| Application temperature | substrate +10…+30 °C; air +15…+30 °C |
| Curing | at +10/+20/+30 °C: foot traffic after 36 / 24 / 16 h; light load after 7 / 5 / 3 days; full load after 14 / 7 / 5 days |
| Key properties | compressive strength 85 MPa; flexural strength 35 MPa; tensile strength 22 MPa; impact strength 32 kJ/m2; Shore D hardness 86; heat resistance: continuous +70 °C, up to 7 days +90 °C, up to 12 h +110 °C; pot life 30 min |
| Consumption | 0.25–0.35 kg/m2 per coat, excluding dilution |
| Shelf life | 6 months from the date of manufacture in unopened containers, in a dry, cool room at +15…+25 °C, protected from sub-zero temperatures and direct sunlight |
| Standards | the grade is not listed in the SGRs reviewed on qtp.ru (epoxy compounds 2024, polyurethane compounds 2015, epoxy enamels 2018); the manufacturer is the same — OOO "KTP", Noginsk; test methods DIN / EN ISO / Taber |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Polymer-hybrid composition with 700 % elongation — a membrane under rigid coatings, a chemical-resistant sealant and waterproofing.
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