Polymer bound dyes prepared by diazo coupling reactions with poly(organophosphazenes)

US4412066A · kind A · utility

Assignee

• The United States of America, as represented by the Department of Health and Human Services · US

Inventors

• Harry R. Allcock · State College, US
• Paul E. Austin · State College, US

Key dates

• Filing date: Jun 16, 1982
• Grant date: Oct 25, 1983
• Expiry date: Jun 16, 2002

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C1/835
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Polymer-bound dyes have been prepared by the diazotization of high polymeric [NP(OC.sub.6 H.sub.5).sub.x - (OC.sub.6 H.sub.4 NH.sub.2 -p).sub.y ]n, followed by coupling to phenol, .beta.-naphthol, 6'-NaO.sub.3 S-.beta.-naphthol, and p-aminophenylnaphthalene. These reactions were preceded by model compound studies with the cyclic trimer [NP(OC.sub.6 H.sub.4 NH.sub.2 -p-).sub.2 ].sub.3. In both cases, the aminophenoxy units were generated by reduction of 4-nitrophenoxy groups with the use of PtO.sub.2 and hydrogen. The phosphazene skeleton was unaffected by the reduction, diazotization, and diazo coupling processes. The physical characteristics of the trimers and high polymers are described.