| 摘要 |
<p>A SURFACE TREATED STEEL SHEET HAS A SURFACE TREATMENT FILM INCLUDING A METALLIC COMPOUND CONTAINING TITANIUM, A METALLIC COMPOUND CONTAINING MAGNESIUM, A CATIONIC URETHANE RESIN HAVING AT LEAST ONE CATIONIC FUNCTIONAL GROUP SELECTED FROM PRIMARY TO TERTIARY AMINO GROUPS AND QUATERNARY AMMONIUM BASES, AND A CATIONIC PHENOL POLYCONDENSATE WHICH IS A POLYCONDENSATE OF A PHENOL COMPOUND WITH AN ALDEHYDE AND HAS A CATIONIC FUNCTIONAL GROUP, WHEREIN THE TITANIUM CONTENT IN THE SURFACE TREATMENT FILM IS IN THE RANGE OF 1 MASS % TO 4 MASS % BASED ON A TOTAL SOLID CONTENT; THE MAGNESIUM CONTENT IN THE SURFACE TREATMENT FILM IS IN THE RANGE OF 0.2 MASS % TO 2 MASS % BASED ON A TOTAL SOLID CONTENT; THE CATIONIC URETHANE RESIN CONTENT IN THE SURFACE TREATMENT FILM IS IN THE RANGE OF 20 MASS % TO 35 MASS % BASED ON A TOTAL SOLID CONTENT; THE CATIONIC PHENOL POLYCONDENSATE CONTENT IN THE SURFACE TREATMENT FILM IS IN THE RANGE OF 25 MASS % TO 40 MASS % BASED ON A TOTAL SOLID CONTENT; AND THE MASS RATIO OF THE CATIONIC URETHANE RESIN TO THE CATIONIC PHENOL POLYCONDENSATE IS IN THE RANGE OF 33.3:66.7 TO 49:51.</p> |
