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KHIMTRAST Primer-NP — polyurethane primer for concrete and wood
KHIMTRAST

KHIMTRAST Primer-NP — polyurethane primer for concrete and wood

Floor primers

Primer-NP is a low-viscosity amber-coloured liquid that cures with air moisture. It is used to impregnate and prime concrete and wood before KHIMTRAST ENP compounds and the PU thin-layer coating: the compound hardens the surface and dustproofs the substrate. Adhesion to concrete is at least 2.5 MPa; the primer must not be thinned, the next coat is applied after 24 h, and areas that have soaked it up are treated again.

Specifications

ManufacturerKHIMTRAST — AO “Khimtrast”, Nizhnekamsk
Typefloor primers
Useretail and public, warehouses and logistics, production halls
Baseone-component moisture-curing polyurethane compound with volatile solvents
Colourlow-viscosity amber-coloured liquid
Packagingsteel conical pails 10 l – 10 kg
Application methodby short-pile roller or airless spraying; drying 24 h, re-treat areas that have soaked it up; substrate — concrete at least M300, at least 28 days old, moisture not more than 4 % (wood — not more than 15 %); do not thin
Application temperature+15…+25 °C (air and substrate); substrate 3 °C above the dew point; humidity not more than 65 %
Curingdrying to degree 3 at 20 °C — 4–5 h; before the next coat — 24 h
Key propertiesadhesion to concrete at least 2.5 MPa; direct impact strength of the film (U1A) at least 50 cm; TML hardness 0.6–0.7; adhesion (cross-cut) not more than 1 point; non-volatiles 50–55 %
Consumption0.2–0.3 kg/m² in 1 coat by roller (laboratory figure; actual consumption may be 5–40 % higher)
Shelf life6 months from the date of production at +5…+25 °C in closed original packaging
StandardsTU 20.16.56-104-27903090-2022

Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.

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