New azo Dyes Based on 1,3-dihydroxynitrobenzene and 2,4,6-trihydroxynitrobenzene for Polycaproamide Fibers

Syntheses of 16 previously undescribed mono- and bis-azo compounds in 70-95% yields via azo coupling of 1,3-dihydroxynitrobenzene and 2,4,6-trihydroxynitrobenzene with structurally varied aryldiazonium salts are reported. The synthesized mono- and bis-azo compounds were tested as acid and disperse d...

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Published inFibre chemistry Vol. 53; no. 6; pp. 446 - 450
Main Authors Meleshenkova, V. V., Shukurov, R. O., Kuznetsov, D. N.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.03.2022
Springer
Springer Nature B.V
Subjects
Azo compounds
Chemistry
Chemistry and Materials Science
Color fastness
Coupling (molecular)
Dyes
Organic Chemistry
Perspiration
Polymer Sciences
Stability tests
Structural stability
Substitution reactions
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Summary:Syntheses of 16 previously undescribed mono- and bis-azo compounds in 70-95% yields via azo coupling of 1,3-dihydroxynitrobenzene and 2,4,6-trihydroxynitrobenzene with structurally varied aryldiazonium salts are reported. The synthesized mono- and bis-azo compounds were tested as acid and disperse dyes for polycaproamide fiber. Results of stability tests of the color fastness to washing (GOST 9733.4-–83) and perspiration (GOST 9733.6–83) indicated that the dyes had good operational properties. Conclusions were made about the dependence of the dye stability on the structures of the tested azo compounds.
ISSN:0015-0541
1573-8493
DOI:10.1007/s10692-022-10327-0