(3) summary of the invention
The object of the invention is to provide a kind of Monoazo compound, preparation method and as the purposes of disperse yellow dye.
Described Monoazo compound is suc as formula shown in (I),
The preferred compound structure of the present invention is as (II) or (III):
A kind of preparation method of described Monoazo compound comprises: dichlorphenamide bulk powder and nitrosyl sulfuric acid are carried out diazotization in sulfuric acid after, gained diazonium salt and N-cyanoethyl-Phenhenzamine carry out coupled reaction, and aftertreatment gets paste and is described product.
Described diazotization temperature is preferably 15-20 ℃.
Described coupled reaction temperature is preferably 15-25 ℃.
The preparation method of described Monoazo compound, recommend to carry out as follows:
With 3, the 4-dichlorphenamide bulk powder carries out diazotization with nitrosyl sulfuric acid in sulfuric acid medium, and the diazonium salt that obtains and N-cyanoethyl-Phenhenzamine be 20 ℃ of couplings, insulated and stirred 40 minutes, suction filtration also is washed to neutrality, paste be described product.
Described Monoazo compound can be used as disperse yellow dye, especially is used as the dyeing of trevira.When dyeing as disperse yellow dye, described Monoazo compound often with the certain proportion of auxiliary agent compounding.Described auxiliary agent can be one of following or its any blended usual auxiliaries: naphthalene sulfonic acidformaldehyde condensation product, alkyl naphthalene sulfonic acid formaldehyde condensation products, sulfonated lignin.Described naphthalenesulfonateformaldehyde formaldehyde condensation such as dispersing agent NNO; Alkyl naphthalene sulfonic acid formaldehyde condensation products such as Dispersant MF (condensation compound of methyl naphthalene sulfonic acid and formaldehyde), dispersing agent CNF (benzyl naphthalenesulfonate formaldehyde condensation compound) etc.; Sulfonated lignin such as sodium lignosulfonate (commercial dispersants Reax83A, Reax85A) etc.
It is good that Monoazo compound of the present invention is used for the disperse yellow dye dyefastness, and safety is a kind of environmental protection type dye that can effectively substitute C.I. DISPERSE YELLOW 23 ideally.
(4) embodiment
With specific embodiment the present invention is described below, but protection scope of the present invention is not limited to this.
Embodiment 1
1. diazotization
In the there-necked flask of 150ml, slowly add sulfuric acid, nitrosyl sulfuric acid, the outside lowers the temperature with water-bath, and controlled temperature is about 15-20 ℃.Add 3 after stirring 0.5hr, 4-dichlorphenamide bulk powder 20 grams, add fashionable should not be too fast, should control certain feed rate, to prevent the material caking, the whole reinforced time is controlled to be 1.5hr, stir 3hr after adding, the detection reaction terminal point (1. diazonium salt can be in frozen water clear; 2. diazonium salt can make starch potassium iodide paper become blue), make 3,4-dichlorphenamide bulk powder diazonium salt is standby.
2. coupled reaction
In the beaker of 1000ml, add raw spirit 200ml, add N-cyanoethyl-Phenhenzamine 28 grams, emulsifying agent TX-15 1.2 grams, making beating 3hr adds thionamic acid 1.5 grams, and controlled temperature drips diazonium liquid about 20 ℃, the dropping time is 1.5hr, at 20 ℃ of stirring reaction 12hr, measured reaction terminal point (checking that with oozing the circle method diazonium salt is excessive slightly) continued insulated and stirred 40 minutes, suction filtration also is washed to neutrality, gets paste and is described product.
The paste and the Dispersant MF that obtain are ground in 1: 1.8 ratio, spray-driedly then obtain disperse yellow dye of the present invention.
The dyeing experiment
Getting the above-mentioned dispersed dye that make of 0.5 gram is dispersed in 500 ml waters, mix with 60 milliliters water after drawing 20 milliliters, transferring dye bath pH with acetic acid is 5, be warming up to 70 ℃ put into simultaneously 2 the gram woven dacrons dye, in 30 minutes, be warmed up to 130 ℃ by 70 ℃, be incubated 30 minutes, be cooled to begin below 90 ℃ the sampling.Observe its color, adopt GB GB/T3921-1997, GB/T3920-1997, GB/T5718-1997 to test its water-fast colour fastness, colour fastness to rubbing, color fastness to sublimation washed respectively, test result sees Table 1.
Embodiment 2
In the beaker of 1000ml, add DMF 200ml, add N-cyanoethyl-Phenhenzamine 28 grams, stirring makes it dissolving, adds thionamic acid 1.5 grams, and controlled temperature drips embodiment 1 and makes diazonium liquid about 20 ℃, the dropping time is 1.5hr, at 20 ℃ of stirring reaction 12hr, measured reaction terminal point (checking that with oozing the circle method diazonium salt is excessive slightly) continued insulated and stirred 40 minutes, suction filtration also is washed to neutrality, gets paste and is described product.
The paste and the dispersing agent CNF that obtain are ground in 1: 2 ratio, spray-driedly then obtain disperse yellow dye of the present invention.
According to each dyefastness of embodiment 1 described method test disperse yellow dye, test result sees Table 1.
Embodiment 3
With 2, the 3-dichlorphenamide bulk powder substitutes 3, and the 4-dichlorphenamide bulk powder can obtain disperse yellow dye of the present invention according to the method preparation of embodiment 1.
According to each dyefastness of embodiment 1 described method test disperse yellow dye, test result sees Table 1.
Embodiment 4
Substitute 3 with mixed dichlorphenamide bulk powder (wherein, 3,4-dichlorphenamide bulk powder, 2, the weight percentage of 3-dichlorphenamide bulk powder is respectively 81.5%, 18.5%), the 4-dichlorphenamide bulk powder can obtain disperse yellow dye of the present invention according to the method preparation of embodiment 1.
According to each dyefastness of embodiment 1 described method test disperse yellow dye, test result sees Table 1.
Embodiment 5
Monoazo compound 75g, the Monoazo compound 25g that embodiment 3 makes that embodiment 1 is made add 100g water, the grinding of 200g Dispersant MF, and spraying drying makes disperse yellow dye of the present invention again.
According to each dyefastness of embodiment 1 described method test disperse yellow dye, test result sees Table 1.
Comparative Examples 1
Get 0.5 gram C.I. DISPERSE YELLOW, 23 dyestuffs and repeat above-mentioned dyeing experiment.Test result sees Table 1.
Table 1
The embodiment title | Color | Washing fastness | Crock fastness | 180 ℃ of sublimation fastness |
Embodiment 1 | Golden yellow | 4~5 grades | 4~5 grades | 4~5 grades |
Embodiment 2 | Golden yellow | 4~5 grades | 4~5 grades | 4~5 grades |
Embodiment 3 | Golden yellow | 4~5 grades | 4~5 grades | 4~5 grades |
Embodiment 4 | Golden yellow | 4~5 grades | 4~5 grades | 4~5 grades |
Embodiment 5 | Golden yellow | 4~5 grades | 4~5 grades | 4~5 grades |
Comparative Examples 1 | Golden yellow | 4 grades | 4~5 grades | 4 grades |
As seen, disperse yellow dye of the present invention can obtain and the very proximate coloured light of C.I. DISPERSE YELLOW 23 being applied to trevira when dyeing, and the fastness index also exceeds half grade, is the ideal environmental protection type dye of an alternative C.I. DISPERSE YELLOW 23.