Laser-sensitive coating composition

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 7/12 (2006.01) B41M 5/26 (2006.01) B41M 5/30 (2006.01) C08K 9/10 (2006.01) C09D 5/18 (2006.01)

Patent

CA 2696032

The present invention provides a laser-sensitive coating composition comprising titanium dioxide in the anatase form or polymeric particles comprising a polymeric matrix comprising one or more water-insoluble polymers and titanium dioxide in the anatase form encapsulated in the polymeric matrix, and apolymeric binder. The present invention also provides a process for the preparation of the compositions, processes for preparing substrates coated with the coating compositions, substrates coated with the compositions, processes for marking the substrates coated with the compositions, and marked substrates obtainable by the latter processes.

La présente invention porte sur une composition de revêtement sensible au laser qui comprend du dioxyde de titane dans la forme anatase ou des particules polymères se composant d'une matrice polymère comprenant un ou plusieurs polymères insolubles dans l'eau et de dioxyde de titane dans la forme anatase encapsulé dans la matrice polymère, et un liant polymère. La présente invention porte également sur un procédé de préparation des compositions, sur des procédés de préparation de substrats revêtus par les compositions de revêtement, sur des substrats revêtus par les compositions, sur des procédés de marquage des substrats revêtus par les compositions, et sur des substrats marqués pouvant être obtenus par ces derniers procédés.

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