75166552
Sep 16, 1996
Aug 25, 1998
chemicals for use in the fields of public works and civil engineering, specifically hardener-based soil consolidation systems; rheology modifiers using hydrocolloids, surfactants and/or precipitated silicas; set accelerator for shotcrete using precipitated silicas; performance additives, specifically defoamers and lubricants, used in underground works and surfactant-based foaming agents
Chemicals