- Azo disperse dyes and sublimation transferring ink comprising thereof
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The present invention relates to a sublimation transfer ink which is used in digital textile printing (DTP). The present invention provides an azo-based disperse dye represented by chemical formula 1 and a sublimation transfer ink comprising the azo-based disperse dye. In chemical formula 1, R_1 and R_2 are each independently an alkyl group having 6 to 8 carbon atoms, R_3 is each independently H, NO_2 or SCO_2H_3, R_4 and R_5 are each independently H, NO_2, Cl or CN, R_6 is each independently H or NHCO_2CH_3, and R_7 is each independently H, CH_3, OCH_3, or OCH_2CH_3. The azo-based disperse dye and the transfer ink comprising the azo-based disperse dye can be used as a transfer ink specified to DTP since the azo-based disperse dye and the transfer ink comprising the azo-based disperse dye are not only excellent in transfer efficiency for fabrics such as a polyester fabric and the like, but also very excellent in washing fastness and light fastness.COPYRIGHT KIPO 2018
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Paragraph 0094; 0095; 0113; 0114; 0116
(2018/08/19)
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- Cyanide Substitution in Aryl Halides by Copper(I) Complexes Derived from Formamide and from Formaldehyde Oxime
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The copper complexes , and derived from formamide, and and derived from formaldehyde oxime (formaldoxime) react with 2'-acetamido-6-bromo-4'-diethylamino-2,4-dinitroazobenzene, ArBr, to form the corresponding aryl cyanide, ArCN, and the products ArH and Ar2 of reductive substitution and biaryl coupling.Copper(I) bromide complexes are also formed.Kinetic studies of these reactions in acetonitrile solution show that the cyanation reactions are equal concentration, second-order processes in each case.The effect of a radial scavenger on the reaction suggests the involvement of radicals in the formation of Ar2, but not in the formation of ArCN.A mechanism involving concerted nucleophilic substitution within the co-ordination sphere of copper(I) is proposed.
- Connor, Joseph A.,Gibson, Danuta,Price, Raymond
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p. 619 - 622
(2007/10/02)
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- Synthesis and Spectral Characterization of Blue Dyes of the Benzene Series
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53 Donor-acceptor substituted azo dyes of the benzene series were prepared by diazonium-coupling reactions (1a-s) or halogen-cyanide exchange (->2a-x, 3a-j).Described are the preparation of the amines 4a-m and the coupling compounds 5a-t and the procedure of diazotizing and coupling.The colouristic and spectroscopic data show that compounds of the general formula 1 are excellent brilliant blue azo dyes usefull for dyeing polyester material.
- Thiel, W.,Mayer, R.,Jauer, E.-A.,Modrow, H.,Dost, H.
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p. 497 - 514
(2007/10/02)
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- Process for the manufacture of aromatic nitriles
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A process for the manufacture of aromatic nitriles by reacting an aromatic halogen compound with formamide and the anhydride of a monocarboxylic acid in the presence of a copper catalyst and an acid-binding agent. Particularly applicable to replacement of halogen ortho to the azo linkage of an azo dyestuff by cyano.
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- Process for the manufacture of aromatic nitriles
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Process for the manufacture of aromatic nitriles by reacting an aromatic halogen compound with formaldoxime in the presence of a copper catalyst and an acid-binding agent, preferably a tertiary amine. Particularly applicable to replacement of halogen ortho to the azo linkage of an azo dyestuff by cyano.
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