| 摘要 |
A laundry creamy smoothness improver containing potassium metaphosphate having a viscosity in an aqueous solution of 200 mPa s or more, wherein the viscosity is determined under the specified conditions; a detergent composition containing the laundry creamy smoothness improver as defined above, and a solubilizing agent; a process for hand-washing, wherein washing is carried out under specified conditions; and a process for preparing a potassium metaphosphate as defined above, including the step of spray-drying an aqueous solution of potassium dihydrogenphosphate and phosphoric acid, or an aqueous solution of potassium dihydrogenphosphate, phosphoric acid, a network-forming element other than phosphorus, and/or a network-modifying element other than K, and baking the spray-dried product. |
