Trisazo dyes derived from 4,4′-diaminodiphenylsulphide: Substitutes for C.I. Direct black 38 and C.I. Direct Green 1

The synthesis of a series of trisazo direct dyes obtained by tetrazotization of 4,4′-diaminophenylsulphide and coupling with H-acid and m-phenylenediamines, phenol or resorcinol is described. These compounds dye cotton in green and black shades with good build-up and levelling properties. It can be...

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Bibliographic Details
Published in:Dyes and pigments 1996-07, Vol.31 (3), p.253-262
Main Authors: Chao, Y.C., Pan, Y.I.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical industry and chemicals
Dyes, pigments
Exact sciences and technology
Industrial chemicals
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Summary:The synthesis of a series of trisazo direct dyes obtained by tetrazotization of 4,4′-diaminophenylsulphide and coupling with H-acid and m-phenylenediamines, phenol or resorcinol is described. These compounds dye cotton in green and black shades with good build-up and levelling properties. It can be concluded that trisazo dyes derived from 4,4′-diaminodiphenylsulphide have superior substantivity and wash fastness on cotton than C.I. Direct Black 38 and C.I. Direct Green 1.
ISSN:0143-7208
1873-3743
DOI:10.1016/0143-7208(95)00101-8