| abstract |
Solid surfaces, esp of transparent glass or plastic articles, used e.g. for diving equipment are rendered permanently clear and water-wettable by treatment e.g. by immersion, spraying, etc. with a soln or dispersion contg. >=1 Gp. IV metal cpd. pref. a 0.1-20 wt.% soln of SnCl2, SnBr2, SnF2, SnSO4 or stannous-formate or acetate, or of Zr-acetate, -acetyl acetonate or formate, followed by rinsing. Solvent may be water, opt. mixed with an org. mono- or poly-hydroxy cpd., esp glycerol or a glycol, or with a polymer, esp. polyvinyl pyrrolidone. |