IMPREGNATING SUBSTANCES FOR CONCRETE, STONE, MASONRY, PLASTER AND MORTAR, WATERPROOFING SOLUTIONS AND HYDROPHOBIZING AGENTS FOR TREATING WALLS, FACADES AND BUILDING PLATES, CHEMICALS USED AS ADDITIVES TO CONSTRUCTION MATERIALS, PAINT REMOVING COMPOSITIONS, ADHESIVES FOR PLASTER AND MORTAR, ARTIFICIAL-RESINS-CONTAINING PLASTIC MASSES, CONCRETE ADDITIVES