| 摘要 |
PURPOSE: A removable solid marker is provided to ensure an excellent coating property when applied to the unabsorbed surface of a white board, glass, plastic plate, steel plate, and board and to enable clean removal using papers or fabrics. CONSTITUTION: A removable solid marker comprises 20~40% of wax, 5~40% of non-ionic surfactant, 5~50% of synthetic resin and 5~30% of pigment. The wax is two kinds having the melting point difference of 20~30°C selected from petroleum wax, vegetable wax and synthetic wax. The non-ionic surfactant is a liquid phase at room temperature and has HLB value of 8~13. The non-ionic surfactant is polyoxy ethylene alkyleter, polyoxyethylene alkylester or mixture thereof. |
