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Khimtrast KhimGermet PU (2K) polyurethane joint sealant — UV-resistant
KHIMTRAST

Khimtrast KhimGermet PU (2K) polyurethane joint sealant — UV-resistant

Joint sealants

Unlike the acrylic KhimGermet A, this sealant is polyurethane and two-component: it is resilient, resistant to ultraviolet and temperature changes from −60 to +70 °C, and after curing it can be painted with water-based paints. The paste is mixed with the curing liquid in a ratio of 90:11 by weight and pressed with a spatula into joints, gaps, seams and cracks in structures made of concrete, foam concrete, brick, plaster, metal, PVC and wood. Adhesion to concrete is at least 1.1 MPa, to steel and PVC at least 1.2 MPa, elongation at break at least 300%.

Specifications

ManufacturerKhimtrast — AO “Khimtrast”, Nizhnekamsk
Typejoint sealants
Usejoints and abutments
Basetwo-component polyurethane sealant: component A — sealing paste (binders, plasticisers, fillers, desiccants, thixotropic agents, catalysts, tinting pastes), component B — curing liquid (isocyanates); density 1.4–1.7 g/cm³
Colourwhite or grey paste; component B — viscous colourless or light yellow liquid
Packagingcomponent A — 10 l plastic bucket (9 kg); component B — 1 l plastic canister (1.1 kg)
Application methodsealing of joints, gaps, seams (except expansion joints of the envelope structures of panel buildings) and cracks in vertical and inclined structures made of concrete, foam concrete, brick, plaster, metal, PVC, wood, and in horizontal ones — without direct mechanical load; A:B = 90:11 by weight, mix with an electric mixer (drill 600–800 W) until homogeneous, do not add solvents or additives; for partial use, first stir A, then take out and mix the required amount; clean the surface with wire brushes, blow out, degrease with xylene, toluene or acetone, in winter remove snow, frost and ice, dry; fresh concrete at least 28 days old, moisture of the 20 mm surface layer max 4%; press in with a spatula without voids, breaks or sagging, immediately level and compact; do not use in rain or snowfall; after curing it can be painted with water-based paints and mastics; tools — xylene, toluene, acetone, solvent naphtha, 646, R-4, R-5
Application temperatureair +10…+40 °C, humidity max 80%, substrate 3 °C above the dew point; application down to −20 °C is permitted (curing takes longer than 24 h)
Curingpot life at 25 °C at least 5 h; curing at 25 °C max 24 h
Key propertiesnominal tensile strength at least 0.2 MPa; relative elongation at break at least 300%; adhesion at least: concrete 1.1 MPa, wood 1.2 MPa, steel 1.2 MPa, glass 0.9 MPa, PVC 1.2 MPa; resilience, resistance to UV radiation and temperature changes from −60 to +70 °C
Layer thicknesslayer max 15 mm
Shelf life12 months from the date of manufacture; storage at +10…+30 °C in closed original packaging without access of moisture
StandardsTU 20.30.22-061-27903090-2022; certificate of conformity No. 0022204 (certification body Tvereks, RA.RU.11AM05), 30.08.2022–29.08.2025

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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