Laser etching of polyvinylchloride

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 3/00 (2006.01) C08J 5/00 (2006.01) C08K 3/26 (2006.01)

Patent

CA 2734490

A laser-markable polyvinylchloride composition is provided which is adapted to undergo reduced or no color change in response to irradiation with a laser beam. The compo-sition contains polyvinylchloride and a discoloration control ad-ditive present in an effective amount to reduce or eliminate dis-coloration caused by laser marking of the polyvinylchloride com-position.

La présente invention concerne une composition de polychlorure de vinyle pouvant être marquée au laser qui est conçue pour subir un faible changement de couleur ou aucun changement de couleur en réponse à lirradiation par un faisceau laser. La composition contient du polychlorure de vinyle et un additif limitant la décoloration présent en une quantité efficace pour réduire ou éliminer la décoloration entraînée par le marquage au laser de la composition de polychlorure de vinyle.

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