The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2006
Filed:
May. 08, 2003
Robert A. Pyles, Bethel Park, PA (US);
David M. Derikart, Tarentum, PA (US);
Rick L. Archey, Pleasant Hills, PA (US);
Michael Nikolakopoulos, Pittsburgh, PA (US);
Robert A. Pyles, Bethel Park, PA (US);
David M. Derikart, Tarentum, PA (US);
Rick L. Archey, Pleasant Hills, PA (US);
Michael Nikolakopoulos, Pittsburgh, PA (US);
Bayer Materialscience LLC, Pittsburgh, PA (US);
Abstract
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 a carrier and an optional emulsifier. 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.