| 摘要 |
<p>Surface portions of metal materials, in particular constituting interesting artefacts from hystorical-artistic or archeological viewpoints, are protected from atmospheric agents and pollutants, and are re-aggregated, by means of the application, onto the concerned surfaces, of a protecting material constituted by a vinylidene fluoride polymer comprising 55-85 mol % of vinylidene fluoride, 10-45 mol % of hexafluoropropene and 0-30 mol % of tetrafluoroethylene. Such polymers are applied onto the surface to be protected as solutions in volatile solvents.</p> |
