发明名称 |
Process for tinting plastic articles |
摘要 |
A process for tinting a molded article is disclosed. The process entails applying by spraying or by flow coating a hot, dye-solution onto at least a portion of the surface of a molded article to obtain a tinted article and washing the tinted article. In addition to the dissolved dye, the dye solution that is substantially free of particulate matter contains an aqueous solution of an organic solvent and a surfactant. The article is one molded of a thermoplastic molding composition. In an embodiment of the invention, the dye solution is prepared by filtering a hot aqueous solution through a bag filter that contains a dye to obtain a hot, dye-solution. In a further embodiment, activated carbon is used to purify the dye solution to obtain a dye-free aqueous solution.
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申请公布号 |
US2004221403(A1) |
申请公布日期 |
2004.11.11 |
申请号 |
US20030434242 |
申请日期 |
2003.05.08 |
申请人 |
PYLES ROBERT A.;DERIKART DAVID M.;ARCHEY RICK L.;NIKOLAKOPOULOS MICHAEL |
发明人 |
PYLES ROBERT A.;DERIKART DAVID M.;ARCHEY RICK L.;NIKOLAKOPOULOS MICHAEL |
分类号 |
D06P1/651;D06P1/92;(IPC1-7):D06P3/52 |
主分类号 |
D06P1/651 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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