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    • 10. 发明授权
    • Method for preparing tinted contact lens
    • 着色隐形眼镜的制备方法
    • US5938795A
    • 1999-08-17
    • US402410
    • 1995-03-10
    • Frank F. MolockJames D. Ford
    • Frank F. MolockJames D. Ford
    • D06P3/00B29D11/00C08F20/06C08F20/18C08F20/20C09B5/44D06P1/382D06P1/52D06P3/34G02B1/04G02C7/04D06P5/00
    • B29D11/00317D06P1/382D06P1/5257D06P3/348G02B1/043
    • An improved method for imparting a tint or color to a soft, hydrogel contact lens by uniformly dispersing a dye throughout the lens. The dye is a water-soluble halotriazine dye. The dye is reacted with a hydrophilic monomer to prepare a reactive dye containing predominantly monofunctionality. The monomer is then subjected to polymerization in the presence of a homogeneous solution of the reactive dye in the monomer under conditions to yield the hydrophilic polymer from which the lens is formed. The dye becomes bonded to the polymer during polymerization. The finished lens does not require soaking in an aqueous solution of the dye to impart the desired tint or color to the lens. Additionally, the dye uniformly dispersed throughout the lens according to the improved method does not leach out of the lens or migrate within the lens. Furthermore, the lens does not need to be washed with aqueous base to bond the dye to the lens.
    • 一种通过使染料均匀地分散在整个透镜中而使柔软的水凝胶隐形眼镜赋予着色或着色的改进方法。 染料是水溶性卤代三嗪染料。 将染料与亲水性单体反应以制备主要具有单官能度的活性染料。 然后在反应性染料的均匀溶液存在下将单体在单体的条件下进行聚合,得到形成透镜的亲水性聚合物。 聚合期间染料与聚合物结合。 成品镜片不需要在染料的水溶液中浸泡以赋予镜片所需的色调或颜色。 此外,根据改进的方法均匀分散在整个透镜中的染料不会从透镜中浸出或在透镜内迁移。 此外,透镜不需要用水性碱洗涤以将染料粘合到透镜上。