Chemical sealing preparations; chemical sealing compounds; chemical sealants for the sealing of surfaces; chemical additives for concrete; chemical preparations for the treatment of concrete; chemical products for protecting concrete; chemical compounds to seal and preserve fresh concrete; emulsions (chemical); plastics in the form of emulsions; plastics in the form of emulsions for use in industry; curing preparations; curing additives; concrete curing agents; chemical compositions for curing concrete; concrete-waterproofing chemicals, except paints; concrete preservatives, except paints and oils; acrylic modified emulsion for use as a curing membrane on freshly poured concrete