Prepn of transparent nanometer calcium carbonate for high-grade lithographic ink

A technology of offset printing ink and calcium carbonate, applied in the direction of ink, chemical instruments and methods, applications, etc., can solve problems such as not being able to adapt to printing requirements

Inactive Publication Date: 2002-01-23
倪海兵 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the printing industry towards high speed and multi-color, aluminum hydroxide, ba...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 0.8 cubic meters of calcium hydroxide slurry with a concentration of 4.0% (weight concentration) in a reaction kettle of 1 cubic meter, and control the initial temperature of the reaction at 8 ° C. 2 The kiln gas with an amount of 17-25% (volume concentration) is carbonized, and the flow rate of the kiln gas is 7.5m 3 After carbonization for 0.5 hour, add a mixture of 0.1 kg of tartaric acid and 0.2 kg of lactose, continue carbonization until the pH value of the calcium carbonate slurry reaches 7, then add 0.3 kg of aluminum sulfate and 0.2 kg of magnesium sulfate to obtain uniformly dispersed nano-carbonate The calcium slurry is ready for use.

[0020] Dissolve 0.3 kg of rosin and 0.3 kg of hydrogenated rosin soap in warm water at 85°C to make a coating solution, then add the coating agent to the nano-calcium carbonate slurry that has been heated to 90°C, and perform constant temperature coating treatment for 1 hour. Filter the slurry while it is hot, and dry it a...

Embodiment 2

[0023] Add 0.75 cubic meters of calcium hydroxide slurry with a concentration of 13.0% (weight concentration) in a reaction kettle of 1 cubic meter. The initial temperature of the reaction is controlled at 30 ° C. 2 Kiln gas with an amount of 17-25% (volume concentration) is carbonized. When the carbonization rate reaches 35%, add 0.8 kg of maltose and continue carbonization until the pH of the calcium carbonate slurry reaches 7, then add 0.5 kg of sodium hexametaphosphate and 2 Kilogram of magnesium chloride, get the evenly dispersed nano-calcium carbonate slurry for use.

[0024] Dissolve 1.5kg of dimerized rosin in warm water at 95°C to make a coating solution, then add the coating agent to the nano-calcium carbonate slurry that has been heated to 90°C, perform constant temperature coating treatment for 0.5 hours, and filter the slurry , Dry at 110°C to obtain nanometer transparent ink calcium. The average particle size of the product is 35 nanometers, the particle size di...

Embodiment 3

[0026] Add 0.8 cubic meters of calcium hydroxide slurry with a concentration of 8.0% (weight concentration) in a reaction kettle of 1 cubic meter, and control the initial temperature of the reaction at 20 ° C. 2 The kiln gas with an amount of 17-25% (volume concentration) is carbonized, and the flow rate of the kiln gas is 6.0m 3 / h, add 1 kg of sodium hexametaphosphate and 0.2 kg of lactose after carbonization for 2 hours. Continue carbonization until the pH of the calcium carbonate slurry reaches 7, then add 0.25 kilograms of sodium dodecylbenzene sulfonate and 3 kilograms of aluminum sulfate to obtain an evenly dispersed nanometer calcium carbonate slurry for use.

[0027] Dissolve 1.2 kg of disproportionated rosin and 0.3 kg of stearic acid in warm water at 85°C to make a coating solution, then add the coating agent to the nano-calcium carbonate slurry that has been heated to 90°C, and perform constant temperature coating treatment for 1.5 hours , filter the slurry while ...

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Abstract

Through carbonization in Ca(OH)2 suspension by leading-in kiln gas containing CO2; controlling the nucleation rate of calcium carbonate crystal nucleus by the temperature of Ca(OH)2 suspension and the CO2 flow rate; controlling the growth rate of crystal faces by adding crystal form regulator; adding dispersant to regulate surface charge; and liquid phase surface coating dispersed cubic nanometercalcium carbonate grains, transparent nanometer calcium carbonate material for ink is prepared, which has size of 15-40 nm, GSD of 1.57, specific surface area greater than 35 sq m/g, ink oil absorption of 0.4 g/g and no coagulation. The calcium carbonate material may be used to produce transparent ink for high grade lithography.

Description

technical field [0001] The invention relates to a preparation method of nano transparent calcium carbonate, in particular to a preparation method of nano transparent calcium carbonate for high-grade offset printing ink. Background technique [0002] As the printing industry develops towards high speed and multi-color, aluminum hydroxide, barium sulfate, aluminum barium white, etc. traditionally used in inks can no longer meet the new printing requirements. At present, the high-grade filler used in ink is mainly high-quality nano-scale precipitated calcium carbonate. It is mainly used to adjust the physical performance indicators such as ink color, concentration and consistency, and also adjust the ink property to make the printing performance suitable, and also play the role of adjusting and reducing the cost of ink. This kind of calcium carbonate has the characteristics of small particle size (0.02-0.04μm), uniform particle distribution, surface treatment with resin acid, ...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/00C09D11/03
Inventor 顾达姚成范瑾杨永和高春明詹业平倪海兵李伟凌高峰
Owner 倪海兵
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