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Pearlescent dye for papermaking and preparation method thereof

A technology of pearlescent dyes and pearlescent pigments, which is applied in the direction of paper, pigmented coating, pigment/opacifier addition, etc. It can solve the problems of unsatisfactory paper decoration effect, unsatisfactory matching and proportioning, and affecting the smoothness of paper. , to achieve the effect of rich color expression, good decorative effect and excellent color fidelity

Inactive Publication Date: 2018-12-28
ANHUI ZHONGYA PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing packaging paper is to color the paper by coating the surface of the paper with dyes. The matching and proportioning of the components of the dyes are not ideal, the aggregation phenomenon between the pigment particles is serious, and the dispersion is difficult, which seriously affects the smoothness of the paper. degree, the decorative effect of the paper is not ideal, the paper is not glossy, the dyed paper is easy to fade after a period of use, and the colored paper feels poor and not smooth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this example, the pearlescent dye for papermaking is made from the following percentages of raw materials: 25% modified kaolin, 5% citric acid, 5% neopentyl glycol, 10% pearlescent pigment, 1% thickener, and 1% dispersant , the balance is deionized water;

[0025] Among them, the modification method of the modified kaolin is: take 1g of silane coupling agent and mix it with 25mL ethanol, then use acetic acid aqueous solution to adjust the pH value to 5.5-7 to obtain a hydrolyzed silane coupling agent solution, add 8g of kaolin to In the hydrolyzed silane coupling agent solution, heated to 60°C for 2 hours, filtered, washed, dried, and ground through a 300-mesh sieve to obtain modified kaolin;

[0026] The thickener is methyl methacrylate; the dispersant is sodium lignosulfonate; the pearlescent pigment is 100# pearlescent gold;

[0027] The preparation method of pearlescent dye for papermaking of the present embodiment comprises the following steps:

[0028] S1, we...

Embodiment 2

[0033] In this example, the pearlescent dye for papermaking is made from the following percentages of raw materials: 38% modified kaolin, 9% citric acid, 12% neopentyl glycol, 18% pearlescent pigment, 2% thickener, and 3% dispersant , the balance is deionized water;

[0034] Among them, the modification method of the modified kaolin is: take 1g of silane coupling agent and mix it with 25mL ethanol, then use acetic acid aqueous solution to adjust the pH value to 5.5-7 to obtain a hydrolyzed silane coupling agent solution, add 8g of kaolin to In the hydrolyzed silane coupling agent solution, heated to 70°C for 3 hours, filtered, washed, dried, and ground through a 300-400 mesh sieve to obtain modified kaolin;

[0035] The thickener is isooctyl methacrylate; the dispersant is methyl methacrylate-maleic anhydride copolymer; the pearlescent pigment is 100# pearlescent gold;

[0036] The preparation method of pearlescent dye for papermaking of the present embodiment comprises the f...

Embodiment 3

[0042] In this example, the pearlescent dye for papermaking is made from the following percentages of raw materials: 32% modified kaolin, 7% citric acid, 8% neopentyl glycol, 14% pearlescent pigment, 1.5% thickener, and 2% dispersant , the balance is deionized water;

[0043] Among them, the modification method of the modified kaolin is: take 1g of silane coupling agent and mix it with 25mL ethanol, then use acetic acid aqueous solution to adjust the pH value to 5.5-7 to obtain a hydrolyzed silane coupling agent solution, add 8g of kaolin to In the hydrolyzed silane coupling agent solution, heated to 65°C for 2.5 hours, filtered, washed, dried, and ground through a 360-mesh sieve to obtain modified kaolin;

[0044] The thickener is ethyl acrylate; the dispersant is dispersant CNF; the pearlescent pigment is 100# pearlescent gold;

[0045] The preparation method of pearlescent dye for papermaking of the present embodiment comprises the following steps:

[0046] S1, weighing e...

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PUM

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Abstract

The invention provides a pearlescent dye for papermaking and a preparation method thereof, and relates to the technical field of dyes for paper. The pearlescent dye for papermaking is prepared from modified kaolin, citric acid, neopentyl glycol, pearlescent pigment, thickener, dispersant and deionized water. The pearlescent dye for papermaking is used for paper surface printing, is good in paper decoration effect, has high glossiness and is bright and excellent in color fidelity, the dyed paper does not shade easily after being used for a period of time, the dye stability is good, the paper surface is smooth and fine, the paper is good in touch, natural and straight, and the addition of the pearlescent pigment makes the paper color expression layers rich, realistic and moving.

Description

technical field [0001] The invention relates to the technical field of paper dyes, in particular to a pearlescent dye for papermaking and a preparation method thereof. Background technique [0002] With the improvement of living standards, people pay more and more attention to aesthetics and taste, and the demand for high-end food and cosmetic packaging paper is increasing, which makes traditional packaging paper unable to meet people's needs, and the quality and color of paper are increasingly popular. valued, [0003] Dye for papermaking is an engineering material that coats the surface of paper and forms a firmly adherent film. Papermaking coating is an important part of coating and processing packaging paper. It is a mixed system composed of pigment dispersion, adhesive and other additives. Good protective effect, improve the printing suitability of paper, and endow the paper with certain special functions such as moisture-proof, water-resistant, and anti-bacterial. P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/28D21H19/40D21H19/46D21H19/44D21H19/62
CPCD21H21/28D21H19/40D21H19/44D21H19/46D21H19/62
Inventor 王君王平亚
Owner ANHUI ZHONGYA PAPER
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