Synthesis and Characterization of Novel Colored Polyurethanes

ABSTRACT

Azo disperse dyes containing N, N-diethylol group have been prepared and each dye was polycondensed with 4,4′ -Diphenyl methane diisocyanate. The resultant colored polyurethanes were characterized by nitrogen content, IR spectral studies, number average molecular weight ([Mbar]n), estimated by conductometric titration, and thermogravimetry. The electrical conductivity of all the polyurethanes was measured at room temperature.

Keywords:

• polyurethanes
• IR spectral studies
• number average molecular weight ([Mbar]n)
• thermogravimetric
• electrical conductivity

Acknowledgments

The authors are thankful to Atul Products Ltd., Atul for providing chemicals and Garda Chemicals, Panoli Gidc, Ankleswer for providing the thermal studies. The authors are also thankful to South Gujarat University, Surat for providing the research facility.