Laser ray transmitting colored thermoplastic resin composition and method of laser welding

Abstract

Laser ray transmitting colored thermoplastic resin composition containing a triphenylmethane salt forming dye consisting of an anionic component from a triphenylmethane acid dye and an organic ammonium component, said acid dye being represented by Formula (1) below, 1 R1: hydrogen atom or alkyl group, R2 hydrogen atom, alkyl group, hydroxyl group, carboxyl group, or sulfonic acid group, R3: hydrogen atom, sulfonic acid group, aryl group not having or having substituent, or group represented by Formula (D) below, 2 R12, R13: hydrogen atom, alkyl group not having or having substituent, aryl group not having or having substituent, or aralkyl group not having or having substituent, A1, A2 hydrogen atom or alkyl group not having or having substituent, B1, B2: aryl group not having or having substituent or aralkyl group not having or having substituent, one, two or more of R2, R3, B1 and B2 are sulfonic acid groups or have a sulfonic acid group. Method of laser welding wherein a contact portion of a laser ray transmitting material comprising the laser ray transmitting colored thermoplastic resin composition above and a laser ray absorbing material is welded by irradiating laser ray so that the laser ray passes through the laser ray transmitting material and is absorbed in the laser ray absorbing material with the laser ray transmitting material and the laser ray absorbing material in contact with each other.

Dependencies are inferred from the claim text.