| 摘要 |
PURPOSE:To obtain a scale remover suitable for walls of man toilet stool or pipings without shape collapse on use or transportation, by compression-molding a powder mix of sulfamic acid powder and an boric ortho-acid powder of a specific particle size, respectively at a specific weight ratio. CONSTITUTION:(A) 100 pts.wt. of sulfamic acid powder of 16 to 200 mesh, preferably 16 to 100 mesh particle sizes and (B) 10 to 80 pts.wt., preferably 20 to 70 pts.wt. of boric ortho-acid of smaller particle sizes than those of component (A), preferably 60 to 250 mesh are mixed and the mixture is molded by compressing at 100 to 800kg/cm<2>, preferably 200 to 800 kg/cm<2> to give the subject scale remover. |
