Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing Nano calcium carbonate dedicated to printing ink

A technology of nano-calcium carbonate and calcium carbonate, applied in the direction of ink, chemical instruments and methods, applications, etc., can solve the problems of small calcium carbonate particle size, affecting product dispersibility, transparency, etc., and achieve high drying and excellent ink absorption Effect

Inactive Publication Date: 2007-02-21
上海耀华纳米科技有限公司
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, low-temperature carbonization (below 20°C) is mostly used for the preparation of calcium carbonate for inks. Saponified rosin coats calcium carbonate, and the small particle size of calcium carbonate causes agglomeration, which affects the dispersion and transparency of the product.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Carbonization: Add 1.5 cubic meters of 90g / L (as CaCO 3 Calcium hydroxide slurry), carbonization starting temperature is 20°C, 0.2kg sucrose and 0.3kg sodium citrate are added before carbonization, and CO 2 17-22% (volume concentration) of kiln gas is carbonized until the pH value of the calcium carbonate slurry reaches 7, and then 0.4kg sodium polyacrylate and 0.2kg zinc chloride are added to obtain uniformly dispersed nano-calcium carbonate slurry for use .

[0022] Coating: Dissolve 2.5kg of hydrogenated rosin and 2.5kg of dimerized rosin in hot water at 95°C to make a coating solution, then add the coating agent to the nano-calcium carbonate slurry at 60°C, and coat at a constant temperature for 40 minutes. Continuous press filtration and drying to obtain nanometer transparent ink calcium.

[0023] Finished product: average particle size is 20nm, particle size distribution GSD 1.51, specific surface area 45m 2 / g, oil absorption value 47g / 100gCaCO 3 , no reunion...

Embodiment 2

[0025] Carbonization: Add 1.5 cubic meters of 120g / L (as CaCO 3 Calcium hydroxide slurry), the carbonization start temperature is 15°C, and the CO 2 17-22% (volume concentration) of kiln gas is used for carbonization, 0.1kg sodium pyrophosphate and 0.2kg sodium ethylenediaminetetraacetate are added after 10 minutes, carbonized until the pH value of the calcium carbonate slurry reaches 7, and then 0.5kg ten Sodium dialkyl sulfate and 0.3kg magnesium sulfate, obtain the nanometer calcium carbonate slurry of uniform dispersion stand-by.

[0026] Coating: Dissolve 2kg rosin and 3kg rosin-modified phenolic resin in hot water at 95°C to make a coating solution, then add the coating agent to the nano-calcium carbonate slurry at 60°C, and coat at a constant temperature for 30 minutes, continuously Press filtration and drying to obtain nanometer transparent ink calcium.

[0027] Finished product: average particle size 30nm, particle size distribution GSD 1.55, specific surface area 3...

Embodiment 3

[0029] Carbonization: Add 1.5 cubic meters of 105g / L (as CaCO 3 Calcium hydroxide slurry), carbonization start temperature is 30°C, 0.5kg sucrose is added before carbonization, and CO 2 Carbonize kiln gas with 17-22% (volume concentration), add 0.3kg sodium hexametaphosphate when the carbonization rate reaches 85%, continue carbonization until the pH value of the calcium carbonate slurry reaches 7, then add 0.2kg sodium polyacrylate , to obtain a uniformly dispersed nano-calcium carbonate slurry for use.

[0030] Coating: Dissolve 5kg of rosin soap in hot water at 95°C to make a coating solution, then add the coating agent to the nano-calcium carbonate slurry at 60°C, coat at a constant temperature for 20 minutes, press filter continuously, and dry to obtain Nano transparent ink calcium.

[0031] Finished product: the average particle size is 40nm, the particle size distribution is GSD 1.58, and the specific surface area is 32m 2 / g, oil absorption value 36g / 100gCaCO 3 , n...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
Specific surfaceaaaaaaaaaa
Oil absorption valueaaaaaaaaaa
Login to View More

Abstract

This invention discloses a method for preparing special nanoscale calcium carbonate for ink. The method comprises: calcining natural calcium carbonate, slaking, carbonzing, coating by a coating agent, vacuum-filtering and drying to obtain nanoscale calcium carbonate. The initial carbonization temperature is 15-40 deg.C, and crystal-morphology regulator and dispersant are added during carbonization. The coating agent is resinic acid and its derivatives. The obtained nanoscale calcium carbonate has such advantages as high dispersibility, good transparency, good luster, good ink absorbency and high dryness.

Description

technical field [0001] The invention relates to a preparation method of calcium carbonate, in particular to a preparation method of special nano-calcium carbonate for ink. Background technique [0002] The rapid development of the printing industry has led to the development of ink special calcium carbonate. According to the comprehensive information and statistical data of the Ink Branch of China Daily Chemical Industry Association, the total output of ink in the country in 2002 was 250,000 tons, accounting for 6% of the world's ink output, a year-on-year increase of 7.32% compared with the previous year, and sales revenue was 4.6 billion Yuan, a year-on-year increase of 6.98%. The total output of ink continues to rank fourth in the world, second only to the United States (1.16 million tons), Japan (500,000 tons) and Germany (450,000 tons). Among them, offset ink has the largest share, accounting for 40-45% of the total market. It is predicted that the demand for ink in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09C1/02C09C3/00C09D11/02
Inventor 蔡琨曲晶易登峰颜培刚
Owner 上海耀华纳米科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com