A process for making dyed articles

Details A process for making dyed articles A process for making dyed articles

D - Textiles, Paper

06

P

D06P 1/613 (2006.01) B29D 11/00 (2006.01) D06P 1/90 (2006.01) D06P 1/92 (2006.01) D06P 3/00 (2006.01) D06P 3/54 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2479793

A process of dyeing a molded article is disclosed. The process entails immersing at least a portion of the article in a dyeing bath, retaining the portion in the bath for a period of time sufficient to allow an amount of dye to diffuse into the article, and removing said article from the bath. The molded article comprises a polymeric resin such as (co)polyester, (co)polycarbonates, acrylonitrile-butadiene-styrene, polyamide, polyurethane, polyalkyl(meth)~acrylate, allyldiglycol carbonate and styrene copolymers. The dyeing bath contains in addition to dye, water, a plasticizing agent and a leveling agent.

L'invention concerne un procédé de teinture d'un article moulé. Le procédé consiste à: immerger au moins une partie de l'article dans un bain de teinture; maintenir ladite partie dans le bain pendant une durée suffisante pour permettre à une quantité de la teinture de se diffuser dans l'article; et retirer l'article du bain. L'article moulé comprend une résine polymérique, telle qu'un (co)polyester, des (co)polycarbonates, un acrylonitrile-butadiène-styrène, un polyamide, un polyuréthane, un polyalkyl(méth)-acrylate, des copolymères de carbonate d'allyldiglycol et de styrène. Le bain de teinture contient, outre le colorant, de l'eau, un agent plastifiant et un agent d'étalement.

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