1 Chemicals for the building industry, namely, polymers and polymer compounds for use in preparation and manufacturing of admixtures for concretes, cements, mortars and plasters; chemical admixtures, agents and additives for concretes, cements and mortars and plasters that include polymers; multi-dosage admixtures that include plasticizing and water-reducing polymers for cements, concretes, mortars, plasters and crushed aggregates; viscosity modifier admixtures for cements, cement pastes and plasters; water-reducing multi-dosage admixtures and modifiers of the rheological properties of concretes and cements.