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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 unsuitable large-scale production and complex preparation process, and achieve huge market application prospects and commercial value, stable chemical properties, and enhanced stability.

Active Publication Date: 2014-01-29
SUZHOU SUNMUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of this method is relatively complicated, and it is not suitable for large-scale industrial production.

Method used

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  • Preparation method for self-adsorption type liquid pigment for regulating brightness of paper product
  • Preparation method for self-adsorption type liquid pigment for regulating brightness of paper product

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a preparation method for a self-adsorption type liquid pigment for regulating brightness of a paper product. According to the method, a purple pigment filter cake and a blue pigment filter cake are compounded; N,N-dimethyl formamide and triethanolamine are adopted to treat the compounded pigment filter cake; a silica sol and a siloxane coupling agent are adopted to carry out surface film coating on the compounded pigment filter cake, wherein the film thickness is controlled in the range of 50-100 nm; 10.0-30.0 wt.% of the film coated compounded pigment, 2.0-10.0 wt.% of a dispersing agent, 0.01-0.8 wt.% of an antibacterial agent, and the balance of deionized water are mixed, and are subjected to mechanical crushing to prepare into the liquid pigment capable of self-adsorption with paper pulp fibers and fillers. The preparation process of the method of the present invention is simple and feasible, and the obtained liquid pigment can be used for regulating the brightness of the paper product.

Description

technical field [0001] The invention relates to a preparation method of a liquid pigment, in particular to a preparation method of a self-absorbing liquid pigment for whitening paper products. Background technique [0002] The visual effect of paper depends not only on the brightness (that is, whiteness) of the paper, but also on the hue of the paper. Under the same whiteness, purple-white or blue-white paper has a much higher visual whiteness than yellow-hued paper. Therefore, in the paper production process, especially in the production process of high-grade cultural paper, it is often necessary to color the paper, and purple-white and blue-white are the main directions of color matching. The method commonly used for paper coloring at present is to add coloring dyes or fluorescent whitening agents to pulp. There are three main types of toning dyes commonly used in the paper industry: basic dyes, acid dyes and direct dyes. [0003] Shading dyes are divided into solid and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/36
Inventor 伍金平周华杜长森许丹解亚楠王东海
Owner SUZHOU SUNMUN TECH CO LTD
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