Colored thermoplastic resin compositions for laser welding, specific neutral anthraquinone dyes as colorants therefor, and molded product therefrom
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United States of America Patent
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Apr 7, 2009
Grant Date -
Jan 12, 2006
app pub date -
Jul 6, 2005
filing date -
Nov 13, 2000
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Abstract
Thermoplastic resin compositions suitable for laser welding are disclosed, which include a mixture of neutral anthraquinone blue dye with other red dye to absorb visible light with wavelength less than 700 nm and transmit a laser beam with wavelength at 800 nm to 1200 nm and to enhance weldability.
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