Abstract: A laser-welded article comprises: a laser-transmissible workpiece made from a laser-transmissible colored resin composition including at least a thermoplastic resin and an alkaline earth metal salt of an anthraquinone-type acidic dye represented by the following chemical formulae (1) and/or (2) 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.

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, R7 is allowed to be the group presented by chemical formula (2) and at least one of R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 is SO3M1/2 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.

Abstract: A laser-welded article comprises: a laser-transmissible workpiece made from a laser-transmissible colored resin composition including at least a thermoplastic resin and an alkaline earth metal salt of an anthraquinone-type acidic dye represented by the following chemical formulae (1) and/or (2) 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.

Abstract: A laser-transmissible colored resin composition comprises an anthraquinone-type acidic dye represented by the following chemical formula (1) [in the chemical formula (1), —R1 is a hydrogen atom, a hydroxyl group or an amino group, —R2 and —R3 are a hydrogen atom, an alkyl group, a halogen atom, an alkoxyl group or —SO3M which M is a hydrogen atom, an alkaline metal or an ammonium, —R4, —R5, —R6, —R7— and —R8 are a hydrogen atom, an alkyl group, an acyl group, an acylamide group, an acyl-N-alkylamide group, a halogen atom, an alkoxyl group or —SO3M which M is same above, and at least one of —R2, —R3, —R4, —R5, —R6, —R7 and —R8 is —SO3M]. It may be represented by the following chemical formula (2).