| 摘要 |
<p>The invention relates to a protective coating which is removable with a removing agent comprising a strong base, which protective coating comprises a pigment, a weak base and a binder, the binder being a polymer having a weight-average molecular weight of 10,000-100,000 and an acid value of 40-250. The invention further relates to a protective agent and a method for forming the protective coating.</p> |
