LASER-WELDED ARTICLE OF LASER-TRANSMISSIBLE WORKPIECE INCLUDING ALKALINE EARTH METAL SALT OF ANTHRAPYRIDONE ACID DYE
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United States of America Patent
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Issued Date -
Mar 20, 2008
app pub date -
Feb 7, 2006
filing date -
Feb 9, 2005
priority date (Note) -
Abandoned
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Abstract
A laser-welded article comprises: a laser-transmissible workpiece made from a laser-transmissible colored resin composition including a resin and an alkaline earth metal salt of an anthrapyridone-type acidic dye represented by the following chemical formula [in the chemical formula, R.sup.7 is allowed to be the group presented by chemical formula (2) and at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, and R.sup.10 is SO.sub.3M.sub.1/2 that M is an alkaline earth metal]and a laser-absorptive workpiece putting the laser-transmissible workpiece together, wherein the workpieces are welded at the put position thereof by irradiated laser towards the laser-transmissible workpiece that transmits therethrough and is absorbed into the laser-absorptive workpiece.
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