Phthalocyanines and their use in ink-jet printers

C - Chemistry – Metallurgy – 09 – B

Patent

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Details

C09B 47/06 (2006.01) C09B 47/26 (2006.01) C09B 67/22 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2532680

A composition comprising: (a) a major dye component which is a mixture of phthalocyanine dyes of Formula (1) and salts thereof: wherein: M is Cu or Ni; PC represents a phthalocyanine nucleus of formula (a); R1 and R2 independently are H or optionally substituted CI-4alkyl; R3 is H or optionally substituted hydrocarbyl; and R4 is optionally substituted hydrocarbyl; or R3 and R4 together with the nitrogen atom to which they are attached represent an optionally substituted aliphatic or aromatic ring system; x is 0.1 to 3.8; y is 0.1 to 3.8; z is 0.1 to 3.8; the sum of (x+y+z) is 4; and the substituents, represented by x, y and z, are attached only to a .beta.-position on the phthalocyanine ring; and (b) a liquid medium which comprises water and an organic solvent or an organic solvent free from water. Also novel dyes, ink- jet printing processes, printed images, and cartridges.

L'invention porte sur une composition contenant (a) un composant principal de colorant qui est un mélange de colorants de phthalocyanine représentés par la formule (1) et des sels ceux-ci. Dans la formule (I), M est Cu ou Ni; Pc représente un noyau de phthalocyanine de la formule (I); R?1¿ et R?2 ¿sont indépendamment H ou alkyl C¿1-4 ?facultativement substitué ; R?3¿ est H ou hydrocarbyl facultativement substitué ; R?4¿ est hydrocarbyl facultativement substitué , R?3¿ et R?4¿ ainsi que l'atome d'azote auquel ils sont fixés représentent un système cyclique aliphatique ou aromatique facultativement substitué ; x est compris entre 0,1 et 3,8; y est compris entre 0,1 et 3,8; z est compris entre 0,1 et 3,8 ; la somme de (x+y+z) est de 4; et les substituants, représentés par x, y et z, sont seulement fixés à une position .beta. du cycle de phthalocyanine; et (b) un milieu liquide qui contient de l'eau et un solvant organique ou un solvant organique qui ne contient pas d'eau. L'invention porte aussi sur de nouvelles compositions et de nouvelles encres, sur des procédés d'impression à jet d'encre, et sur des images imprimées et des cartouches.

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