Process for making dyed articles
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United States of America Patent
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-
May 11, 2004
Grant Date -
Oct 2, 2003
app pub date -
Mar 26, 2002
filing date -
Mar 26, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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.
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