| 摘要 |
The temporary protection of polymeric articles, particularly polymeric articles with optical qualities such as ophthalmic lenses formed by the lamination of individual lens blanks, can be effected by the application of protective polymeric compositions to the surface of the polymer article, the composition being applied as a dry film or coating a film on a surface of the polymeric article. The individual lens blank is prepared for lamination or coating by application of a selective solvent to the polymeric film, the selective solvent dissolving, dispersing or otherwise removing the protective polymeric film but neither reacting with, etching or dissolving the composition of the polymeric article. The solvent even may comprise water or aqueous solutions (especially pH 8.0 to 12), although C1 to C5 alcohols and alkylene glycol ethers may also be used as the solvent.
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