| 摘要 |
PURPOSE: A liquid etchant using fluoride salt instead of hydrofluoric acid is provided to give uniform evenness on the surface for low reflection, prevent scratches, and decrease danger in processing and environmental pollution. CONSTITUTION: The liquid etchant comprises the components of: 0.5-50wt.% of fluoride salt such as NH4F, NH4HF2, NaF, NaHF2, KF or KHF2; 5-40wt.% of surfactants such as dioctyl sulfosuccinate or R1R2R3R4N+X-, wherein R1, R2, R3 and R4 are C1-C30 alkyl or aryl, X is F, Cl, Br, I, or carboxylic acid anion of C1-C10, such as stearyl dimethyl benzyl ammonium chloride, stearyl trimethyl ammonium chloride, etc; 0.05-10wt.% of sulfate of Ca, Na, K, Mg or Ba; and 0.5-10wt.% of oligosaccharide containing monosaccharide(glucose, fructose) and disaccharide(cane sugar, lactose). The low reflective glass is produced by soaking glass in prepared etchant or spraying etchant over glass.
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