Relations Between the Molecular Structures of Dyes and Their Technical Properties

Synthesis and Characterization of Nitrosonaphthol Dyes Based on 1-Naphthol and Their Dyeing Properties on Tanned Leather

“…However, it was observed that the acidic ratings are higher than the alkaline ratings. This observation, could be attributed to the repulsion between the anionic sulphonated group and anionic charge sites in the fibre, a negative affinity is produced in alkaline medium as opposed to the acidic medium condition where there is positive affinity of sulphonated groups for cation site in the fibre which will by analogy produce superior fastness properties than the alkaline medium condition [14].…”

Color variations of anthraquinone and azo reactive dyes on cellulose caused by nitrogen oxides under wet conditions

“…Especially aminoanthraquinone (AAQ) dyes were confirmed to suffer 'burnt-gas-fume fading' on cellulose acetate in the 1930s [3,4]. According to Giles et al [3,4], Rowe and Chamberlain [5], who made a systematic study of the gas-fume fading of cellulose acetate rayon dyed with many AAQ dyes, independently reached a conclusion similar to that of the MLB team.…”

“…According to Giles et al [3,4], Rowe and Chamberlain [5], who made a systematic study of the gas-fume fading of cellulose acetate rayon dyed with many AAQ dyes, independently reached a conclusion similar to that of the MLB team. The MLB team [3,4] and Rowe and Chamberlain [5] suggested that free or substituted amino groups in the dye became either diazotized or nitrosated in the fading. The reactions, which may occur in fading or color variation, are as follows [3,4]:…”

“…The MLB team [3,4] and Rowe and Chamberlain [5] suggested that free or substituted amino groups in the dye became either diazotized or nitrosated in the fading. The reactions, which may occur in fading or color variation, are as follows [3,4]:…”

“…It has been recognized that nitrogen oxide pollutants affect the dyes on textiles [3e13]. Without referring to any literature, Giles et al [3,4] have reviewed the history and details of the burnt gas-fume fading of wool dyeing studied by a research team of the dye-manufacturing firm Meister, Lucius and Bruning (MLB) in the early 20th century.…”