Preparation method of modified nanometer calcium carbonate for ink

A nano-calcium carbonate, modified technology, applied in the direction of calcium carbonate/strontium/barium, ink, nanotechnology, etc., can solve the problems of large particle size of nano-calcium carbonate, poor compatibility of ink base materials, poor dispersion performance, etc. , to achieve the effect of good gloss and transparency, less product impurities and good application performance

Inactive Publication Date: 2019-01-01
HENAN JUNHUA DEV
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Problems solved by technology

[0004] Chinese Patent Publication No. CN105820601A discloses a method for preparing nano-calcium carbonate for high-grade inks. In this method, the initial temperature of the carbonization reaction is 18-23°C, and the saponification solution of linseed oil and maleic acid is added at 65-90°C. Surface treatment and modification of nano-calcium carbonate has produced nano-calcium carbonate with good optical properties and solved the problem of ink gelling, but it has poor compatibility with ink base materials, high viscosity, and poor dispersion performance
[0005] Chinese Patent Publication No. CN101531391A discloses an industrialized preparation method of nano-ca

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  • Preparation method of modified nanometer calcium carbonate for ink

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Embodiment 1

[0024] A preparation method for modified nano-calcium carbonate for ink, comprising the following steps:

[0025] 1) Add a crystal form control agent to the calcium hydroxide suspension with a mass fraction of 12%, and at 20°C, pass through carbon dioxide with a volume concentration of 55% for carbonization reaction. When the carbonization rate reaches 30%, add a crystallization aid agent, carbonization reaction 25min, the pH value of the system is 6.5, the carbonization reaction is finished, and the slurry containing nano-calcium carbonate is obtained; the crystal form control agent is sucrose, and the addition amount of the crystal form control agent is 0.6% of the calcium hydroxide mass; It is made by mixing sodium tripolyphosphate, sodium lignosulfonate and tall oil in a mass ratio of 1:2:1, and the amount of crystal aid added is 1% of the mass of calcium hydroxide;

[0026] 2) At 75°C, add the modified solution to the slurry containing nano-calcium carbonate in step 1), a...

Embodiment 2

[0029] A preparation method for modified nano-calcium carbonate for ink, comprising the following steps:

[0030] 1) Add a crystal form control agent to the calcium hydroxide suspension with a mass fraction of 11%, and at 18°C, pass through carbon dioxide with a volume concentration of 65% for carbonization reaction. When the carbonization rate reaches 30%, add a crystallization aid agent, carbonization reaction 20min, the pH value of the system is 6.6, the carbonization reaction ends, and the slurry containing nano-calcium carbonate is obtained; the crystal form control agent is lactose, and the addition amount of the crystal form control agent is 0.7% of the calcium hydroxide mass; It is made by mixing sodium tripolyphosphate, sodium lignosulfonate and tall oil in a mass ratio of 1:3:2, and the amount of crystal aid added is 1.2% of the mass of calcium hydroxide;

[0031] 2) At 70°C, add the modified solution to the slurry containing nano-calcium carbonate in step 1), and st...

Embodiment 3

[0034] A preparation method for modified nano-calcium carbonate for ink, comprising the following steps:

[0035] 1) Add a crystal form control agent to the calcium hydroxide suspension with a mass fraction of 10%, and at 21°C, pass through carbon dioxide with a volume concentration of 75% for carbonization reaction. When the carbonization rate reaches 30%, add a crystallization aid , carbonization reaction 18min, system pH value is 6.7, and carbonization reaction finishes, and the slurry containing nano-calcium carbonate is obtained; Crystal form control agent is beet sugar, and the addition amount of crystal form control agent is 0.5% of calcium hydroxide mass; It is made by mixing sodium tripolyphosphate, sodium lignosulfonate and tall oil in a mass ratio of 1:4:2, and the amount of crystal aid added is 1.3% of the mass of calcium hydroxide;

[0036] 2) At 85°C, add the modified solution to the slurry containing nano-calcium carbonate in step 1), and stir and mix for 2.5 ho...

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Abstract

The invention discloses a preparation method of modified nanometer calcium carbonate for an ink. The preparation method comprises the following steps: (1) adding a crystal form control agent into suspension liquid of calcium hydroxide, introducing carbon dioxide to perform carbonizing reaction, adding a crystal additive when a carbonizing rate reaches 30% or above, so as to obtain slurry containing the nanometer calcium carbonate after the carbonizing reaction is ended; (2) adding modifying liquid into the slurry containing the nanometer calcium carbonate in step (1) at the temperature of 60 to 95 DEG C, stirring and mixing for 0.5 to 2h, so as to obtain the slurry containing the modified nanometer calcium carbonate, wherein the adding amount of a dry base of the modifying liquid is equalto 2 to 6% of the mass of the nanometer calcium carbonate; (3) filtering the obtained slurry containing the modified nanometer calcium carbonate in step (2), washing, drying, and crushing, so as to obtain the modified nanometer calcium carbonate for the ink. The preparation method has the advantages that the preparation technology is simple; the obtained nanometer calcium carbonate has small sizeand good application property; the modified nanometer calcium carbonate can be applied into medium and high-grade offset ink and gravure solvent ink, and good economic benefit and social benefit are realized.

Description

technical field [0001] The invention belongs to the technical field of nano calcium carbonate preparation. Background technique [0002] There are many kinds of inks, which are divided into oxide film drying inks, osmotic drying inks, volatile drying inks, radiation drying inks, etc. according to the drying method; according to the printing process, they are divided into lithographic printing inks, letterpress printing inks, gravure printing inks, and flexographic printing inks. Printing ink and stencil printing ink; according to chemical composition, it can be divided into resin type, solvent type, oil type, water-based type, etc. [0003] In the preparation process of printing ink, nano-calcium carbonate mainly plays the role of adjusting the ink body and improving thixotropy in the ink. Therefore, high-performance nano-calcium carbonate is required, and the activated nano-calcium carbonate is used in In ink products, it exhibits excellent dispersion, transparency, fluidi...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/04C09C3/06C09C3/08C09C3/10C01F11/18B82Y40/00C09D11/03
CPCB82Y40/00C01F11/181C01F11/182C01F11/183C01P2004/38C01P2004/64C09C1/022C09C3/006C09C3/04C09C3/06C09C3/08C09C3/10C09D11/03
Inventor 汤广斌刘旭王恩伟郑强李冬孙浩杰
Owner HENAN JUNHUA DEV
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