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Advanced crack‐resistant coatings based on water dispersion of chlorine‐sulpho‐polyethylene (CSPE, Hypalon^®) vulcanized by Mannich alkalis (MA) water solution were obtained. Application of MA as a CSPE structure component makes it possible to produce a vulcanized net of saturated polymer, and thus to receive ecologically safe impenetrable crack resistant coatings of any substrata (concrete, metal, plastic, etc.). The coatings can be applied in aircraft, automotive, shipbuilding, paint and varnish industries, civil engineering, etc. as a corrosion‐resistant material. The optimal coating composition and its mechanical properties have been studied.