FIELD: chemistry.
SUBSTANCE: present invention relates to compositions for impregnating porous surfaces, for example concrete, asbestos cement, wood etc, as well as wet surfaces, at temperature ranging from -5°C to +30°C. The composition contains the following, wt %: 30-36 urethane prepolymer, 6-18 filler, 3-6 plasticiser, 41-55 coal-tar solvent and 0.3-0.4 structuring additive TI as a drying agent.
EFFECT: preparation of a composition based on a single-component urethane film forming agent, capable of moisture curing, having better absorbability into a porous substrate, more dense waterproofing, low rate of increase of viscosity and higher elasticity, which simplifies the technology of depositing the composition.
8 cl, 3 tbl, 1 dwg
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