Polymeric acetoacetanilide azo colorants

This invention relates to colorants comprising a chromophore having a single azo acetoacetanilide moiety, wherein said moiety comprises at least one poly(oxyalkylene) chain. Such colorants exhibit excellent base stability and lightfastness, particularly when incorporated within certain media and/or...

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Bibliographic Details
Main Authors Xia, Jusong, Stephens, Eric B, Mason, Mary G, Miley, John W, Starks, Leonard J, Stephenson, Eugene K
Format Patent
LanguageEnglish
Published 23.12.2003
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Summary:This invention relates to colorants comprising a chromophore having a single azo acetoacetanilide moiety, wherein said moiety comprises at least one poly(oxyalkylene) chain. Such colorants exhibit excellent base stability and lightfastness, particularly when incorporated within certain media and/or on the surface of certain substrates. These poly(oxyalkylene) chains provide solubility in different solvents or resins thereby permitting the introduction of such excellent coloring chromophores within diverse media and/or or diverse substrates. Compositions and articles comprising such colorants are provided as are methods for producing such inventive colorants. This invention relates to colorants comprising a chromophore having a single azo acetoacetanilide moiety, wherein said moiety each have at least one poly(oxyalkylene) chain. Such colorants exhibit extremely good base stability and lightfastness, particularly when incoporated within certain media and/or on the surface of certain substrates. These poly(oxyalkylene) chains provide solubility in different solvents or resins thereby permitting the introduction of such excellent coloring chromophores within diverse media and/or or diverse substrates. Compositions and articles comprising such colorants are provided as are methods for producing such inventive colorants.