Improvements in phthalocyanine dye formulations

Details Improvements in phthalocyanine dye formulations Improvements in phthalocyanine dye formulations

C - Chemistry, Metallurgy

09

B

C09B 47/32 (2006.01) C09B 47/04 (2006.01) C09B 47/24 (2006.01) C09B 47/30 (2006.01) C09D 11/00 (2006.01) C09D 11/02 (2006.01)

Patent

CA 2655314

An aqueous formulation comprising an IR-absorbing phthalocyanine dye is provided. The formulation has a pH in the range of 3.5 to 7. The formulation is particularly suitable for use as an IR-absorbing inkjet ink, providing compatibility with known CMYK inks together with an optimally red-shifted l max.

L'invention concerne une formulation aqueuse contenant un colorant phthalocyanine absorbant le rayonnement infrarouge. La formulation possède un pH compris entre 3, 5 et 7. Cette formulation est particulièrement utile en tant qu'encre à jet d'encre absorbant le rayonnement infrarouge et offre une compatibilité avec les encres CMYK avec un décalage optimal vers le rouge l max.

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