Azo dyes suitable for ink jet printing

Abstract

Abstract Anionic azo compounds which, in the free acid form, have the Formula (1): <CHEM> wherein: Ar and Ar<1> are each independently aryl or substituted aryl providing at least one of Ar and Ar<1> has at least one substituent selected from COOH and COSH; J and J<1> are each independently of formula (2), (3) or (4): <CHEM> each R<5> is independently selected from H, alkyl, substituted alkyl, alkoxy, halogen, CN, ureido and NHCOR<6>; R<6> is H, alkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl; each T is independently alkyl; each W is independently selected from H, CN, CONR<1><0>R<1><1>, pyridinium and COOH; each m is an alkylene chain having 2 to 8 carbon atoms; B is H, alkyl or COOH; R<1>, R<2>, R<3>, R<4>, R<1><0> and R<1><1> are each independently H, alkyl or substituted alkyl; L is a divalent organic linking group; n is 0 or 1; each X is independently carbonyl or a group of the Formula (5), (6) or (7): <CHEM> Z is OR<7>, SR<7> or NR<8>R<9>; Y is H, Cl, CN or Z; E is Cl or CN; R<7>, R<8> and R<9> are independently H, alkenyl, substituted alkenyl, alkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl, or R<8> and R<9> together with the nitrogen atom to which they are attached form a 5 or 6 membered ring; provided (i) if the compound of Formula (1) has no -SO3H groups then it has at least two groups selected from -COOH and -COSH; and (ii) the compound of Formula (1) has at least as many groups selected from -COOH and -COSH as -SO3H groups. The compounds are useful for the preparation of inks for use in ink-jet printing.

Inventors

• 👤 Peter Gregory
• 👤 Ronald W Kenyon

Bibliographic Details