Disperse dye paste capable of effectively retarding precipitation and preparation method
A technology for disperse dyes and sizing, applied in organic dyes, dyeing methods, textiles and papermaking, etc., can solve the problems of decreased stability of dye colloidal suspension, difficult to uniformly disperse dye particles, larger particles, etc., to improve storage stability Good properties, excellent dyeing and finishing fastness, and the effect of reducing the average particle size
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Example
[0055] Examples 1~3
[0056] Without adding urea, select disperse dyes and dispersants to grind, and then adjust them into disperse dye finished slurry. The experimental data is according to Table 1:
[0057] Table 1
[0058]
[0059] Precipitation effect detection
[0060] The disperse dye slurries prepared in the above Examples 1 to 3 were allowed to stand for a certain period of time, and then the sedimentation degree was tested according to the method described above. The results are shown in Table 2:
[0061] Table 2
[0062] Example Precipitation % / 7 days Precipitation % / 30 days Precipitation % / 60 days
[0063] 145.4980.1783.17 230.5267.3373.43 318.0454.6468.54
[0064] It can be seen from the test results in Table 2 that the amount of dispersant has a significant effect on the precipitation rate of the disperse dye slurry. As the amount of dispersant increases, the degree of precipitation decreases and the precipitation of the slurry slows down significantly. In addition,...
Example
[0065] Examples 4-9
[0066] Without urea, select disperse dyes and dispersants after grinding, adjust the pH value of the slurry with phosphoric acid to make the finished disperse dye slurry. The experimental data is according to Table 3:
[0067] table 3
[0068]
[0069] Precipitation effect detection
[0070] The disperse dye slurries prepared in the foregoing Examples 4-9 were allowed to stand for a certain period of time, and then the degree of precipitation was tested according to the method described above. The results are shown in Table 4:
[0071] Table 4
[0072] Example Precipitation % / 7 days Precipitation % / 30 days Precipitation % / 60 days 444.7881.6883.94 540.1882.2184.46 639.1579.3982.65 743.4680.1485.15 846.1884.8686.33 948.8585.288.32
[0073] The pH value of the finished disperse dye slurry is generally 7-8. Too high or too low will affect the storage performance and use performance of the slurry. From the sedimentation test results in Table 4, it can be seen that t...
Example
[0074] Examples 10-17
[0075] The disperse dye, dispersant, and urea are mixed and ground to prepare a finished disperse dye slurry. The experimental data is based on Table 5:
[0076] table 5
[0077]
[0078]
[0079] Precipitation effect detection
[0080] The disperse dye slurries prepared in the above Examples 10-17 were allowed to stand for a certain period of time, and then the sedimentation degree was tested according to the method described above. The results are shown in Table 6:
[0081] Table 6
[0082] Example Precipitation % / 7 days Precipitation % / 30 days Precipitation % / 60 days 1043.8379.8586.04 1139.8978.9685.81 1235.4177.6585.13 1326.2176.9684.8 1425.1371.2282.27 1521.3764.6679.12 167.8546.8376.42 176.5840.1675.18
[0083] It can be seen from the sedimentation test results in Table 6 that as the amount of urea increases, the sedimentation rate of the disperse dye product slurry is significantly slowed down, and the higher the amount of urea, the slower the sediment...
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