D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
D06P 3/34 (2006.01) B05C 3/02 (2006.01) D06P 1/02 (2006.01) D06P 1/613 (2006.01) D06P 1/651 (2006.01) D06P 3/54 (2006.01)
Patent
CA 2410254
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 (i) R1 [-O-(CH2)n ]m OR2 wherein R1 and R2 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 R1=butyl, R2=H, n is 2 or 3 and m is 2 to 35. The method is especially useful in the manufacture of tinted lenses.
On présente un procédé pour teindre des articles moulés à partir d'une résine polymérique. Idéalement, l'article est moulé à partir de polycarbonate, et le procédé comprend l'immersion de l'article dans un bain de teinture contenant de l'eau, un colorant, un véhicule et, de manière facultative, un surfactant. Le véhicule est un composé de formule (i) R1 ¬-O-(CH2)n|m OR2, où R1 et R2 sont, indépendamment l'un de l'autre, un H ou un alkyle, un benzyle, un benzoyle ou un radical phényle en C1 à C18, pouvant être substitué dans le cycle aromatique par un alkyle ou un halogène, idéalement R1 = butyle, R2 = H, n = 2 ou 3 et m = 2 à 35. La méthode est particulièrement utile pour la fabrication de lentilles teintées.
Archey Rick L.
Pyles Robert A.
Corporation Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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