Polymeric acetoacetanilide azo colorants

US6667392B2 · kind B2 · utility

Assignee

• Milliken & Company · US

Inventors

• Jusong Xia · Gastonia, US
• Eric B. Stephens · Columbia, US
• Mary G. Mason · Spartanburg, US
• John W. Miley · Campobello, US
• Leonard J. Starks · Duncan, US
• Eugene Kyle Stephenson · Spartanburg, US

Key dates

• Filing date: Nov 21, 2001
• Grant date: Dec 23, 2003
• Expiry date: Apr 18, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B69/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

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.