| 摘要 |
A process for tinting of articles molded from a polymeric resin is disclosed. Preferably, the article is molded from polycarbonate and the process entails immersing the molded article in a dye bath that contains water, dye, a carrier and an optional surfactant. The carrier is a compound conforming to R<1>[-O-(CH2)n]mOR<2> (i) wherein R<1 >and R<2 >independently denote H or C1-18 alkyl, benzyl, benzoyl or phenyl radical which may be substituted in the aromatic ring by alkyl and or halogen, preferably R<1>=butyl, R<2>=H, n is 2 or 3 and m is 2 to 35. The method is especially useful in the manufacture of tinted lenses.
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