Polymerizable dyes—part I
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Hasmukh S. Patel; Mahesh D. Prajapati
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Article
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1990
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Elsevier Science
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English
⚖ 226 KB
were prepared and polycondensed with formaldehyde in the presence of aqueous oxalic acid. The resulting poly(4-arylazo-3-aminophenol-formaldehyde)s (PAAP-Fs) were characterized by yield, melting point, colour, elemental analyses and visible and i.r. spectroscopy. Their h~, values were estimated by n