- Composition of Black Disperse Dye
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The present invention relates to a black disperse dye composition, more specifically, to a black disperse dye composition capable of improving the milling efficiency of a blue dye component of a black disperse dye and increasing, water dispersibility, improving aging stability, (clogging) color fastness during fiber dyeing. (by machine translation)
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Paragraph 0126-0127
(2020/06/16)
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- Disperse dye composition, and preparation method and application thereof
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Disclosed are a disperse dye composition, and a preparation method and application thereof. The disperse dye composition comprises a component A composed of one or more of compounds shown as a formula (1) (please see the specifications for the formula), a component B composed of one or more of compounds shown as a formula (2) (please see the specifications for the formula), forbidden aromatic amine compounds, chlorinated phenols, chlorobenzene and chlorotoluene, optional auxiliaries, and other unavoidable impurities. The total content of the forbidden aromatic amine compounds is 10 ppm or below, the respective content of the various chlorinated phenols is 0.5 ppm or below, and the total content of the chlorobenzene and chlorotoluene is 1 ppm or below. The various environment protection indexes of the disperse dye composition meet the requirements of Oeko-Tex Standard 100(2016). In addition, after fabric is dyed through the disperse dye composition, the dyed fabric meets the baby level requirements of Oeko-Tex Standard 100(2016).
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Paragraph 0102-0104; 0123
(2017/08/28)
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- Azo disperse dye mixtures
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The present invention refers to a dye mixture comprising an azo dye of the formula (I) wherein each of X and X1independently is chlorine or bromine; R1is absent or is C1-4alkyl; and each of R2and R3independently is hydrogen, C1-6alkyl or cyanoethyl; but when R1is absent, R2is n-butyl or cyanoethyl and R3is cyanoethyl; and further dye components according to claim 1, a method for the preparation of such mixtures and a method for coloring a synthetic textile material or fiber blend thereof using such mixtures.
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Page column 14
(2010/02/05)
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- Mutagenicity of two 2-phenylbenzotriazole derivatives, 2-[2-(acetylamino)-4-(diethylamino)-5-methoxyphenyl]-5-amino- 7-bromo-4-chloro-2H-benzotriazole and 2-[2-(acetylamino)-4-(diallylamino)-5-methoxyphenyl]-5-amino-7-bromo-4-chloro-2H-benzotriazole and their detection in river water in Japan.
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We recently detected five 2-phenylbenzotriazole (PBTA)-type mutagens (PBTA-1, PBTA-2, PBTA-3, PBTA-4 and PBTA-6) in concentrates from several rivers that flow in geographically different areas in Japan containing textile-related industries. On the basis of synthesis studies, these five PBTA derivatives were deduced to have originated from the corresponding dinitrophenylazo dyes, which are industrial chemicals used in textile dyeing, via reduction and chlorination. 2-[(2-Bromo-4,6-dinitrophenyl)azo]-5-(diethylamino)-4-methoxyacetanilide (Color Index name Disperse Blue 291, CAS registry no. 56548-64-2) and 2-[(2-bromo-4,6-dinitrophenyl)azo]-5-(diallylamino)-4-methoxyacetanilide (Color Index name Disperse Blue 373, CAS registry no. 51868-46-3) are used in textile dyeing and have 2-[(2-bromo-4,6-dinitrophenyl)azo]-4-methoxyacetanilide moieties in their structures, which are thought to be essential for their conversion to mutagenic PBTA derivatives. In the present study we have synthesized 2-[2-(acetyl-amino)-4-(diethylamino)-5-methoxyphenyl]-5-amino-7-bromo-4-chloro-2H-benzotriazole (PBTA-7) and 2-[2-(acetylamino)-4-(diallylamino)-5-methoxyphenyl]-5-amino-7-bromo-4-chloro-2H-benzotriazole (PBTA-8) from Disperse Blue 291 and Disperse Blue 373, respectively, by reduction with iron powder and subsequent chlorination with sodium hypochlorite. Both PBTA-7 and PBTA-8 exerted strong mutagenicity in Salmonella typhimurium TA98 and YG1024 in the presence of S9 mix (43 000 and 1 430 000 revertants/nmol for PBTA-7 and 40 700 and 2 213 000 revertants/nmol for PBTA-8 in TA98 and YG1024). To clarify whether PBTA-7 and PBTA-8 exist in the environment, water samples were collected at seven sites in six rivers flowing through two different regions where textile dyeing industries are located. All water samples were mutagenic in Salmonella typhimurium YG1024 with S9 mix and their potencies ranged from 108 000 to 1 990 000 revertants/g blue rayon. PBTA-7 and PBTA-8 were detected in water samples from both regions at levels of 0.1-101.4 ng/g blue rayon and 0.1-48.9 ng/g blue rayon, respectively. In some samples PBTA-7 and PBTA-8 could contribute up to 15% of the water mutagenicity.
- Watanabe, Tetsushi,Shiozawa, Tatsushi,Takahashi, Yoshifumi,Takahashi, Tomoyuki,Terao, Yoshiyasu,Nukaya, Haruo,Takamura, Takeji,Sawanishi, Hiroyuki,Ohe, Takeshi,Hirayama, Teruhisa,Wakabayashi, Keiji
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p. 293 - 299
(2008/04/18)
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- Azo disperse dye mixtures
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The present invention refers to a dye mixture comprising an azo dye of the formula (I) whereineach of X and X1 independently is chlorine or bromine;R1 is absent or is C1-4 alkyl; andeach of R2 and R3 independently is hydrogen, C1-6 alkyl or cyanoethyl;but when R1 is absent, R2 is n-butyl or cyanoethyl and R3 is cyanoethyl;and further dye components according to claim 1,a method for the preparation of such mixtures and a method for colouring a synthetic textile material or fibre blend thereof using such mixtures.
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