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Method for preparing nano calcium carbonate for weather-resistant ink

A nano-calcium carbonate and weather resistance technology, applied in the direction of calcium carbonate/strontium/barium, ink, nanotechnology, etc., can solve the problems of ineffective removal of impurities, thickening and agglomeration, and affecting gloss, so as to improve fluidity and gloss, stable moisture value, good economic and social benefits

Active Publication Date: 2017-05-10
GUANGXI HUANA NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has the advantage of easy operation, one-time carbonization cannot effectively remove impurities embedded in calcium carbonate, so it is easy to cause ink gelation, thickening and agglomeration
Chinese invention patent CN101531391A discloses an industrialized preparation method of nano-calcium carbonate for solvent-based inks. The method uses disproportionated rosin and lauryl hydroxystearic acid for surface treatment of calcium carbonate. These two treatment agents have poor heat resistance. It is easy to cause yellowing of the ink and affect the gloss

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing weather-resistant ink nano-calcium carbonate, comprising the following steps:

[0033] (1) Dilute the lime emulsion after aging for 48 hours to a specific gravity of 1.065, and add 1.2% of a crystal form control agent based on the dry basis of calcium carbonate. The crystal form control agent is composed of sucrose with a mass of 3:2:5 , sodium citrate and magnesium chloride, and then the slurry is transported to the carbonation reaction kettle, and the temperature of the lime slurry is controlled at 16°C;

[0034] (2) Introduce CO into the above lime slurry 2 Lime kiln gas with a concentration of 33%, carbonation reaction until the pH drops to 7.0, and then the slurry is controlled to decompose slowly and gently at a low temperature of 32°C;

[0035] (3) Repeat step (2) 4 times to obtain a specific surface area of ​​45.1 m 2 / g of nano-calcium carbonate suspension;

[0036] (4) Heat the nano-calcium carbonate suspension to 75°C, add a compound...

Embodiment 2

[0039] A method for preparing weather-resistant ink nano-calcium carbonate, comprising the following steps:

[0040] (1) Dilute the lime emulsion after aging for 48 hours to a specific gravity of 1.070, and add 1.0% of a crystal form control agent based on the dry basis of calcium carbonate. The crystal form control agent is composed of starch with a mass of 4:3:4 , sodium citrate and aluminum sulfate, and then the slurry is transported to the carbonation reaction kettle, and the temperature of the lime slurry is controlled at 17°C;

[0041] (2) Introduce CO into the above lime slurry 2 Lime kiln gas with a concentration of 25%, carbonation reaction until the pH drops to 7.0, and then the slurry is controlled to decompose slowly and gently at a low temperature of 35°C;

[0042] (3) Repeat step (2) three times to obtain a specific surface area of ​​43.7 m 2 / g of nano-calcium carbonate suspension;

[0043] (4) Heat the nano-calcium carbonate suspension to 80°C, add a compoun...

Embodiment 3

[0046] A method for preparing weather-resistant ink nano-calcium carbonate, comprising the following steps:

[0047](1) Dilute the lime emulsion after aging for 36 hours to a specific gravity of 1.075, and add 2.0% of a crystal form control agent based on the dry weight of calcium carbonate, and the crystal form control agent is composed of half It is composed of lactose, sodium citrate and aluminum sulfate, and then the slurry is transported to the carbonation reaction kettle, and the temperature of the lime slurry is controlled at 15°C;

[0048] (2) Introduce CO into the above lime slurry 2 Lime kiln gas with a concentration of 35%, carbonation reaction until the pH drops to 7.0, and then the slurry is controlled to decompose slowly and gently at a low temperature of 30°C;

[0049] (3) Repeat step (2) for 5 times to obtain a specific surface area of ​​48.6 m 2 / g of nano-calcium carbonate suspension;

[0050] (4) Heat the nano-calcium carbonate suspension to 85°C, add a c...

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Abstract

The invention discloses a method for preparing nano calcium carbonate for weather-resistant ink. The method comprises the following steps of diluting an aged lime emulsion, adding a crystal form control agent into the diluted aged lime emulsion, then conveying slurry into a carbonating reaction kettle, and controlling the temperature of lime mortar to be 15 to 18 DEG C; introducing kiln gas of a lime kiln into the lime mortar, carrying out a carbonating reaction until pH (potential of Hydrogen) is decreased to 7.0, then heating obtained slurry to 30 to 35 DEG C, and repeating the step for 3 to 5 times; afterwards, heating nano calcium carbonate suspending liquid, adding a compound surface treating agent, which is prepared from saturated fatty acid saponified liquid, levopimaric acid and acrylic polyurethane, into the nano calcium carbonate suspending liquid, and agitating an obtained mixture; carrying out pressure filtration, drying and disintegration on obtained calcium carbonate slurry by using conventional methods, so that a product is obtained. The method has a simple and feasible process and is simple to operate; the quality of the product is stable; the application effect is good; not only can the flowability and the glossiness of the ink be effectively improved, but also the yellowing of the nano calcium carbonate can be effectively reduced; the weather resistance of the ink is improved; moreover, the moisture of the product can be effectively maintained; the method has better economic benefit and social benefit.

Description

technical field [0001] The invention relates to the field of preparation of inorganic materials, in particular to a method for preparing nano calcium carbonate for weather-resistant ink. Background technique [0002] In recent years, with the rapid development of my country's economy and technology, higher requirements have been put forward for the quality, variety and quantity of ink. The total amount of ink in my country is the fourth largest ink producer after the United States, Japan and Germany. In addition to meeting the needs of the country, it is also sold overseas. But at present, there is still a big gap between my country and developed countries in Europe, America and Japan in terms of some high-end inks. Nano-calcium carbonate is used as ink filler, and different types of inks have different requirements on the properties of nano-calcium carbonate. At present, the commercially available nano-calcium carbonate used in ink mostly uses the compound of resin acid a...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/08C09C3/10C09C3/04C01F11/18B82Y40/00C09D11/03
CPCB82Y40/00C01F11/181C01P2004/64C09C1/021C09C3/006C09C3/04C09C3/08C09C3/10C09D11/03
Inventor 蓝擎朱勇梁明何松莹李宗穗
Owner GUANGXI HUANA NEW MATERIALS TECH CO LTD
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