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Disperse dyes

Disperse dyes is a class of non-ionic dye, which has low water solubility and exists in water primarily in a highly dispersed state by means of the effect of the dispersing agent in the process of dyeing. It is mainly used for dyeing polyester fibers. The chemical structure of most disperse dyes belong to monoazo type, which accounts for about 80% of all the disperse dyes. And then , anthraquinone accounts for  about 15%, and other types of structures about 5%. It is enerally believed that the dyeing mechanism of disperse dye in water is : In dyeing temperature, part of the disperse dyes dissolves into dye molecules in the dye bath by means of the effect of the dispersing agent, and then is adsorbed on the fiber surface in the form of the molecule. At the same time, the amorphous region in poly ester fiber expands to form a hole, which is large enough to accommodate the dye molecules in dyeing temperature. So it is easy to make the dye molecules diffuse in the fiber, and at the end of staining, the previously puffed hole shrinks as the temperature decreases and makes the dye molecules encased within the fiber, so that the dye molecules can eventually form a single molecule or low molecular weight aggregates to be encased within the solid fiber. Foreign scholars believed that the crystal form of disperse dyes (ie, crystalline) impacts its dyeing performance, but the results later denied this claim. However, if the crystalline form of the  disperse dyes is different, its lattice energy also will be different. So the crystalline form of the disperse dyes affects their commercialization process.

Disperse dyes can be divided into five series:
(1) E-type disperse dyes : they have good leveling properties, and are suitable for dip dyeing process. Besides, some can be used for thermal transfer printing process.
(2) SE-type disperse dyes: they have general leveling properties and good color fastness to sublimation, and can be used in  the dip dyeing and pad-dry-cure dyeing process of the polyester fibers.
(3) S-type disperse dyes: they have high color fastness to sublimation, and are mainly used in the pad-dry-cure dyeing process of the polyester blended fabric.
(4) P-type disperse dyes: they are used for the anti discharge printing of the polyester fibers and cellulose fibers blended fabric.
(5) RD-type disperse dyes: they can be used for the rapid dyeing of the polyester fibers. According to the different molecular structure of the disperse dyes , they can be distribute into azo, anthraquinone, nitrodiphenylamine ,heterocyclic ring and other types. Because of the absence of water-soluble gene, the  disperse dyes dissolved in water is minimal.

Disperse dyes are commonly used to dye in two ways, namely high temperature and pressure method and the hot-melt method. The so-called high temperature and pressure method is actually that the temperature is only 130 ℃, and the pressure is only 0.2MPa (gauge pressure). It was so called because other dyes are usually conducted at atmospheric pressure, and the dyeing temperature generally does not exceed 100 ℃. The pad-dry-cure dyeing is always not carried out in water. On the contrary, the dye staining solution should be padded on the surface of the fiber, and then the dried fiber is fed to the 180 ~ 220 ℃ drying room for 30s. In this process ,the dyes sublime to leave the fiber colored. According to this dyeing process, the disperse dyes can be divided into high, medium and low temperature type. And the high-temperature type disperse dyes have the largest molecular weight and the best resistant sublimation fastness.

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Structure Chemical Name CAS MF
Disperse Black PNR Disperse Black PNR
Disperse Orange 73 Disperse Orange 73 40690-89-9 C24H21N5O4
Disperse Blue 56 Disperse Blue 56 12217-79-7 C14H9BrN2O4
Disperse Orange 76 Disperse Orange 76 13301-61-6 C17H15Cl2N5O2
DISPERSE YELLOW 49 DISPERSE YELLOW 49 54824-37-2 C21H22N4O2
Disperse Blue BGL Disperse Blue BGL 12222-78-5 C20H14N2O5
Disperse Blue 183 Disperse Blue 183 2309-94-6 C20H21BrN6O3
Disperse Red  65 Disperse Red 65 12223-38-0 C18H18ClN5O2
Disperse Orange  29 Disperse Orange 29 61902-11-2 C19H15N5O4
C.I. Disperse Blue B press cake C.I. Disperse Blue B press cake
Disperse Navy Blue RE Disperse Navy Blue RE
Disperse Red 2GH Disperse Red 2GH
Disperse Black JW Disperse Black JW
Disperse Yellow Brown Disperse Yellow Brown
Disperse Red 17 Disperse Red 17
Disperse Blue BS Disperse Blue BS
DISPERSE BLUE 26 DISPERSE BLUE 26 3860-63-7 C16H14N2O4
Disperse Yellow 104 Disperse Yellow 104 12270-42-7 C20H15IN4O2
Disperse Brown V press cake Disperse Brown V press cake
Disperse Yellow 64 Disperse Yellow 64 10319-14-9 C18H10BrNO3
Disperse Blue 165 Disperse Blue 165 41642-51-7 C20H19N7O3
Dispersing agent Dispersing agent
Disperse Red 74 Disperse Red 74 61703-11-5 C22H25N5O7
Disperse Yellow 114 Disperse Yellow 114 61968-66-9 C20H16N4O4S
Disperse Red 127 Disperse Red 127 66795-75-3 C25H21NO6
Disperse Red 98 Disperse Red 98 12223-49-3 C17H20N4O3
Disperse Violet RN Disperse Violet RN
Disperse Red 73 Disperse Red 73 12270-46-1 C18H16N6O2
DISPERSE RED 13 DISPERSE RED 13 3180-81-2 C16H17ClN4O3
Disperse Brown 1 Disperse Brown 1 23355-64-8 C16H15Cl3N4O4
Disperse Red 86 Disperse Red 86 81-68-5 C22H18N2O5S
Disperse Blue 291 Disperse Blue 291 56548-64-2 C19H21BrN6O6
Disperse Violet 77 Disperse Violet 77 77538-14-8 C21H24N6O5
Disperse Blue 143 Disperse Blue 143 61968-28-3 C22H24N4O4
Disperse Red  53 Disperse Red 53 59787-78-9 C19H19NO6
C.I. Disperse Blue F press cake C.I. Disperse Blue F press cake
Disperse Orange 41 Disperse Orange 41 12217-05-9
C.I.Disperse Red 50 C.I.Disperse Red 50 C17H16ClN5O2
Disperse Yellow 5GR Disperse Yellow 5GR
DISPERSE BLACK 1 DISPERSE BLACK 1 6054-48-4 C16H14N4
Disperse Orange 29 Disperse Orange 29 19800-42-1 C19H15N5O4
3-[ethyl[4-[(6-nitrobenzothiazol-2-yl)azo]phenyl]amino]propiononitrile 3-[ethyl[4-[(6-nitrobenzothiazol-2-yl)azo]phenyl]amino]propiononitrile 25510-81-0 C18H16N6O2S
1-amino-4-[(1-methylethyl)amino]anthraquinone 1-amino-4-[(1-methylethyl)amino]anthraquinone 62649-65-4 C17H16N2O2
DISPERSE VIOLET S DISPERSE VIOLET S
Disperse Yellow FL Disperse Yellow FL
2-[[4-[(2-cyano-3-nitrophenyl)azo]-m-tolyl](2-acetoxyethyl)amino]ethyl acetate 2-[[4-[(2-cyano-3-nitrophenyl)azo]-m-tolyl](2-acetoxyethyl)amino]ethyl acetate 66882-16-4 C22H23N5O6
Disperse Red 97 Disperse Red 97 81367-85-3 C17H16N6O5
2-[(2-cyanoethyl)[4-[(6-nitrobenzothiazol-2-yl)azo]phenyl]amino]ethyl acetate 2-[(2-cyanoethyl)[4-[(6-nitrobenzothiazol-2-yl)azo]phenyl]amino]ethyl acetate 68133-69-7 C20H18N6O4S
Disperse Violet  57 Disperse Violet 57 61968-60-3
C.I. 60752 C.I. 60752 72363-26-9 C25H24N2O7S
Disperse Brown 19 Disperse Brown 19 71872-49-6 C20H20Cl2N4O6
2-[ethyl[3-methyl-4-[(5-nitrothiazol-2-yl)azo]phenyl]amino]ethanol 2-[ethyl[3-methyl-4-[(5-nitrothiazol-2-yl)azo]phenyl]amino]ethanol 68516-81-4 C14H17N5O3S
Disperse Yellow 126 Disperse Yellow 126 61968-70-5 C21H24N4O6
Disperse Yellow 184 Disperse Yellow 184 71838-87-4
Disperse Rubine B Disperse Rubine B
Disperse Orange 25 Disperse Orange 25 31482-56-1 C17H17N5O2
Disperse Red 153 Disperse Red 153 78564-87-1 C18H15Cl2N5S
Disperse Rubine S-2GFL Disperse Rubine S-2GFL 61968-52-3 C24H26IN5O7
5-[(3,4-dichlorophenyl)azo]-1,2-dihydro-6-hydroxy-1,4-dimethyl-2-oxonicotinonitrile 5-[(3,4-dichlorophenyl)azo]-1,2-dihydro-6-hydroxy-1,4-dimethyl-2-oxonicotinonitrile 83249-52-9 C14H10Cl2N4O2
3-[ethyl[3-methyl-4-[(6-nitrobenzothiazol-2-yl)azo]phenyl]amino]propiononitrile 3-[ethyl[3-methyl-4-[(6-nitrobenzothiazol-2-yl)azo]phenyl]amino]propiononitrile 16586-42-8 C19H18N6O2S
Disperse Violet  96 Disperse Violet 96
Disperse Black KSL Disperse Black KSL
Disperse Orange 2R Disperse Orange 2R
Disperse Brown HRL Disperse Brown HRL
Disperse Black GL Disperse Black GL
Disperse Violet 2RB Disperse Violet 2RB
3-Pyridinecarbonitrile, 1,2-dihydro-6-hydroxy-4-methyl-1-3-(1-methylethoxy)propyl-2-oxo-5-4-(phenylazo)phenylazo- 3-Pyridinecarbonitrile, 1,2-dihydro-6-hydroxy-4-methyl-1-3-(1-methylethoxy)propyl-2-oxo-5-4-(phenylazo)phenylazo- 85136-74-9 C25H26N6O3
Disperse Blue 79 Disperse Blue 79 12239-34-8 C24H27BrN6O10
Disperse Black RD-2BL(N) Disperse Black RD-2BL(N)
Disperse Red 82 Disperse Red 82 30124-94-8 C21H21N5O6
Disperse Orange 30 Disperse Orange 30 12223-23-3 C19H17Cl2N5O4
Disperse Blue 257 Disperse Blue 257 84931-03-3 C21H23BrN6O5
Disperse Blue  87 Disperse Blue 87 12222-85-4 C20H18N4O4
Disperse Yellow 3G Disperse Yellow 3G 12223-86-8 C18H10BrNO3
Disperse Red 135 Disperse Red 135 58051-96-0 C27H27N5O7
Disperse Red  50 Disperse Red 50 12223-35-7 C17H16ClN5O2
Disperse Black 3BL Disperse Black 3BL
C.I. Disperse Blue E press cake C.I. Disperse Blue E press cake
Disperse Red 73 Disperse Red 73 16889-10-4 C18H16N6O2
DISPERSE BLUE 106 DISPERSE BLUE 106 12223-01-7 C14H17N5O3S
Solvent Yellow 114 Solvent Yellow 114 7576-65-0 C18H11NO3
Disperse Red 177 Disperse Red 177 58051-98-2 C20H19N6O4S
Disperse Blue 301 Disperse Blue 301 105635-65-2 C21H25BrN6O8
4-hydroxy-1-methyl-3-[(3-nitrophenyl)azo]-2-quinolone 4-hydroxy-1-methyl-3-[(3-nitrophenyl)azo]-2-quinolone 6439-53-8 C16H12N4O4
167 RED 167 167 RED 167 C20H22N6O2S;C22H26N6O2S
Disperse Yellow 235 Disperse Yellow 235 177570-98-8
Disperse Black BSF Disperse Black BSF
Disperse Yellow 2G Disperse Yellow 2G
Disperse Grass Green GL Disperse Grass Green GL
Disperse Violet DP Disperse Violet DP
Disperse Violet 26 Disperse Violet 26 6408-72-6 C26H18N2O4
Disperse Yellow GSL Disperse Yellow GSL
Disperse Violet 2RL Disperse Violet 2RL
Disperse Blue 60 Disperse Blue 60 12217-80-0 C20H17N3O5
Disperse Yellow Se-Fl Disperse Yellow Se-Fl 5124-25-4 C18H15N3O4S
Disperse Yellow 119 Disperse Yellow 119 57308-41-5 C15H13N5O4
Disperse Blue 284 Disperse Blue 284 71872-43-0 C17H19N5O6S
4-[(4-nitrophenyl)azo]benzene-1,3-diamine 4-[(4-nitrophenyl)azo]benzene-1,3-diamine 25910-57-0 C12H11N5O2
3-[[4-[(2-chloro-4-nitrophenyl)azo]phenyl]ethylamino]propiononitrile 3-[[4-[(2-chloro-4-nitrophenyl)azo]phenyl]ethylamino]propiononitrile 40880-51-1 C17H16ClN5O2
DISPERSE ORANGE 45 DISPERSE ORANGE 45 12223-27-7
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