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Khimtrast Primer-PM (1K) — concrete primer for polyurea
KHIMTRAST

Khimtrast Primer-PM (1K) — concrete primer for polyurea

Other waterproofing materials

Primer-PM (1K) prepares the concrete substrate for polyurea: it impregnates and seals pores, binds dust and strengthens the surface. It is used under the PM Standard, PM Hard and PM Premium grades and hand-applied polyurea, and also as an intercoat primer if the break between coats has exceeded 12 h. The moisture-curing compound is applied by roller, brush or airless spraying at temperatures from −10 to +30 °C; through the primer, the adhesion of PM Premium to concrete reaches 4.71 MPa.

Specifications

ManufacturerKhimtrast — AO “Khimtrast”, Nizhnekamsk
Typewaterproofing material
Baseone-component moisture-curing polyurethane primer with volatile solvents; non-volatile content at least 46–50%; Brookfield viscosity at 25 °C max 100 cP; density 1,000–1,050 kg/m³
Colourlow-viscosity liquid from light yellow to dark brown
Packagingsteel conical buckets 10 l – 10 kg, 20 l – 20 kg
Application methodpriming of concrete before Khimtrast PM Standard, PM Hard, PM Premium, PM (Hard) Premium, PM Hand-Applied (1K) polyurea; intercoat primer for breaks of more than 12 h and when repairing blisters; concrete at least M300, aged at least 28 days, residual moisture max 4 wt. %; shot blasting, milling or grinding, dust removal with an industrial vacuum cleaner, degreasing with petrol, Nefras or solvent naphtha; prohibited without waterproofing and vapour barrier where there is a risk of capillary rise of moisture; ready to use, do not stir, dilute or add fillers; roller, brush or airless spraying, on absorbent substrates — several coats until a film forms; if craters appear — broadcast quartz sand 0.1–0.3 mm and level with a spatula; tools — acetone, Nefras, xylene
Application temperaturefrom −10 to +30 °C
Curingcuring time at 20 °C max 0.5 h
Key propertiesadhesion to concrete at least 0.5 MPa; in the system, adhesion of polyurea to concrete through the primer: PM Standard 3.50 MPa, PM Hard 4.20 MPa, PM Premium 4.71 MPa; impregnates, seals pores, binds dust and strengthens the substrate
Consumption0.3 kg/m² in 1 coat by roller (laboratory; actual consumption is 5–40% higher)
Shelf life6 months from the date of production; storage and transport at +5…+25 °C in closed original packaging
StandardsTU 20.16.56-104-27903090-2022; voluntary certificate of conformity ROSS RU.32001.04IBF1.OSP28.87377, 21.10.2025–20.10.2028

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

Other materials by KHIMTRAST