| 摘要 |
PURPOSE: A scratch self-recovering coating agent composition is provided to ensure transparent coating film and strong elasticity and to recovery weak scratch caused by strong elasticity in a short time. CONSTITUTION: A method for preparing a scratch self-recovering coating agent composition comprises the steps of: (S100) preparing a polyurethane prepolymer by reacting a reactant including trimethylene oxide; (S102) preparing a polyester prepolymer by reacting a reactant including chitosan; and (S104) mixing 20 ~ 60 parts by weight of the polyurethane prepolymer prepared by (S100) step with 100.0 parts by weight of the polyurethane prepolymer prepared by (S102) step. |
