Preparation method for self-adsorption type liquid pigment for regulating brightness of paper product
A self-adsorption, liquid technology, applied in the direction of pigment-containing coatings, etc., can solve the problems of complex preparation process and unsuitability for large-scale production, achieve stable chemical properties, huge market application prospects and commercial value, and avoid color bleeding.
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Embodiment 1
[0035] (1) N,N-dimethylformamide and triethanolamine are prepared into 5000g composite pigment soaking solution with a mass ratio of 1:10;
[0036] (2) Put the purple pigment filter cake and the blue pigment filter cake in the composite pigment soaking solution described in (1) in a mass ratio of 0.01: 1, the total mass of the purple pigment filter cake and the blue pigment filter cake is 5000g, and Soak at 10°C for 90 minutes to obtain a composite pigment mixture, then filter the composite pigment mixture, wash the precipitate with deionized water and ethanol until the conductivity of the washing solution is ≤100 μS / cm, and finish washing to obtain a composite pigment filter cake ; Among them, the purple pigment filter cake comes from Changzhou North American Chemical Co., Ltd., and the blue pigment filter cake comes from Jiangsu Yabang Group. The solid content of the filter cake is 25.0wt.%.
[0037] (3) Take 500 grams of composite pigment filter cake obtained in (2), add si...
Embodiment 2
[0041] (1) N,N-dimethylformamide and triethanolamine are prepared into 5000g composite pigment soaking solution with a mass ratio of 3:1;
[0042] (2) Put the purple pigment filter cake and the blue pigment filter cake into the composite pigment soaking solution described in (1) in a mass ratio of 3: 1, the total mass of the purple pigment filter cake and the blue pigment filter cake is 5000g, and Soak at 15°C for 60 minutes to obtain a composite pigment mixture, then filter the composite pigment mixture, wash the precipitate with deionized water and ethanol until the conductivity of the washing solution is ≤100 μS / cm, and then finish washing to obtain a composite pigment filter. cake; wherein the purple pigment filter cake comes from Changzhou North American Chemical Co., Ltd., and the blue pigment filter cake comes from Jiangsu Yabang Group, and the solid content of the filter cake is 25.0wt.%.
[0043] (3) Take 500 grams of composite pigment filter cake obtained in (2), add...
Embodiment 3
[0047] (1) N,N-dimethylformamide and triethanolamine are prepared into 5000g composite pigment soaking solution with a mass ratio of 1:1;
[0048] (2) Put the purple pigment filter cake and the blue pigment filter cake into the composite pigment soaking solution described in (1) in a mass ratio of 3: 1, the total mass of the purple pigment filter cake and the blue pigment filter cake is 5000g, and Soak at 20°C for 45 minutes to obtain a composite pigment mixture, then filter the composite pigment mixture, wash the precipitate with deionized water and ethanol until the conductivity of the washing solution is ≤100 μS / cm, and then finish washing to obtain a composite pigment filter. cake; wherein the purple pigment filter cake comes from Changzhou North American Chemical Co., Ltd., and the blue pigment filter cake comes from Jiangsu Yabang Group, and the solid content of the filter cake is 25.0wt.%.
[0049] (3) Take 500 grams of composite pigment filter cake obtained in (2), add...
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