76486-28-7Relevant articles and documents
Method for enhancing alkali resistance and oxidation resistance of benzoisothiazole disperse dyes
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Paragraph 0099-0105; 0107; 0256-0264, (2020/12/10)
The invention discloses a method for enhancing alkali resistance and oxidation resistance of benzoisothiazole disperse dyes, and belongs to the technical field of textiles. The method starts from thestructural design of the dye; an azo alkali-resistant disperse dye taking the benzoisothiazole as a diazo component is synthesized; different groups are introduced into the coupling component to enhance the alkali resistance and oxygen bleaching resistance of the heterocyclic azo disperse dye, so that a series of benzoisothiazole disperse dyes with alkali resistance and oxidation resistance strength difference gradients are obtained; the disperse dye capable of meeting the requirements of a polyester-cotton blended fabric bleached cotton and disperse dyeing polyester one-bath process or a polyester fabric alkali deweighting and disperse dyeing one-bath process is determined, and a reference can be provided for the structural design of alkali-resistant and oxidation-resistant disperse dyes.
EFFECT OF BENZANNELLATION ON THE COLOR OF p-AMINOAZO COMPOUNDS
Gorelik, M. V.,Lomzakova, V. I.
, p. 1641 - 1646 (2007/10/02)
Monoazo dyes containing a naphthalene ring were obtained by diazotization of 1-amino-4-nitro-2-naphthonitrile, 3-amino-5-nitronaphthoisothiazole, and 3-amino-5-nitrobenzoindazole and coupling of the diazonium salts with N,N-dialkyl derivatives of anilines.Their visible spectra were compared with the spectra of the corresponding benzene analogs.Annellation of the benzene ring in the residue of the diazo component gives rise to a bathochromic or hypsochromic shift, depending on the structure of the dye.The nature of the observed effects is discussed.
