Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of carbon black water-based color paste for ballpoint pen

A technology of water-based color paste and ballpoint pen, which is applied in the field of pigment ink, can solve the problems of affecting the application performance of ink such as corrosion resistance, high ion content of dispersion, and unsuitable ballpoint pen ink, etc., achieve excellent dispersion stability, improve dispersibility, outstanding The effect of material characteristics

Inactive Publication Date: 2015-02-18
TIANJIN UNIV
View PDF20 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical oxidation (CN101104761A, CN1692144A, CN101180371A) can increase the number of oxygen-containing groups (carboxyl, hydroxyl, etc.) on the surface of carbon black, and enhance the dispersion and dispersion stability of carbon black in water. There are more types and quantities of surface functional groups and by-products of the reaction, the process is complex, and the repeatability of the results is poor. At the same time, the ionized substances generated during the oxidation process will affect the application performance of the ink such as corrosion resistance.
The grafting modification method improves its dispersion and dispersion stability in water by grafting hydrophilic small molecular groups or polymer groups on the surface of carbon black. The steps are complicated and the cost is high.
Patents CN1175268A, CN101240119A, CN1321708A, CN11752570A, CN1275150A, CN1160415A, CN1175272A, CN1227584A, CN102768482A, CN101111576A utilize diazotization to modify carbon black, coating, rubber, paper, plastic fields Modified carbon black pigment products, if used in the preparation of color paste, need to use dispersants to improve stability, so the viscosity of the color paste is high and the surface tension is low, so it is not suitable for the application of ballpoint pen ink
CN1599779A patent reports the preparation method of modified pigment dispersion, but it utilizes the modified pigment that contains ionizable group on the surface to prepare, so the ion content of dispersion is high, and electrical conductivity is high, is not suitable for ballpoint pen ink application
Microcapsule technology (Zhou Yanyang et al. Colloid Polym Sci (2013) 291:2399–2408) has also been used in the preparation of carbon black paste, but the carbon black microcapsules reported publicly in China have a large particle size and are not suitable for ballpoint pen ink

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

[0018] Put 5g of carbon black (Degussa S160), 200g of zirconium beads (0.2mm in diameter) and 100g of deionized water into an agate ball mill jar, and use a KEQ2L omnidirectional planetary ball mill at a speed of 300r / min at room temperature to mill for 5 hours. The ball milling was stopped, and the carbon black coarse dispersion was separated. Weigh 4.08g of p-aminobenzenesulfonic acid, dissolve it in 40g of deionized water, add 5.75g of hydrochloric acid with a mass fraction of 37.5%, take an ice-salt bath, and wait until the temperature drops to 0°C, weigh 1.62g of sodium nitrite and dissolve it in 25g of deionized water , Add the sodium nitrite solution dropwise to the p-aminobenzenesulfonic acid solution to obtain the diazonium salt solution. Add the carbon black rough mixture into the above diazonium salt solution, mechanically stir at 1500r / min, 70°C, 4h to obtain the modified carbon black dispersion. The obtained modified carbon black dispersion is subjected to ultraf...

Embodiment 2

[0020]Put 5g of carbon black (Cabot ML), 75g of zirconium beads (diameter 6mm) and 50g of deionized water into the agate ball mill jar, use a KEQ2L omni-directional planetary ball mill at a speed of 500r / min at room temperature, ball mill for 1h, stop the ball mill, A crude mixture of carbon black was separated. Weigh 2.5g of p-aminobenzoic acid, dissolve it in 40g of deionized water, add 2.75g of sulfuric acid with a mass fraction of 98%, and take an ice-salt bath. After the temperature drops to 0°C, weigh 1.55g of potassium nitrite and dissolve it in 10g of deionized water. Potassium nitrite solution was added dropwise to p-aminobenzoic acid solution to obtain diazonium salt solution. Add the carbon black coarse dispersion into the above diazonium salt solution, mechanically stir at 700r / min, 10°C, 24h to obtain the modified carbon black dispersion. The obtained modified carbon black dispersion is subjected to ultrafiltration for desalination to obtain modified carbon black...

Embodiment 3

[0022] Put 5g of carbon black (Jinqiushi MA-7), 100g of zirconium beads (diameter 6mm) and 70g of deionized water into an agate ball mill jar, use a KEQ2L omnidirectional planetary ball mill at a speed of 500r / min at room temperature, and mill for 1h. The ball milling was stopped, and the carbon black coarse dispersion was separated. Weigh 2.5g of sodium p-aminobenzenesulfonate, dissolve it in 20g of deionized water, add 4.14g of nitric acid with a mass fraction of 65%, and take an ice-salt bath. When the temperature drops to 5°C, weigh 0.75g of sodium nitrite and dissolve it in 25g of deionized Add sodium nitrite solution dropwise to the system to obtain diazonium salt solution. The carbon black coarse dispersion was added to the above diazonium salt solution, mechanically stirred at 700r / min, the reaction temperature was 40°C, and the modified carbon black dispersion was obtained for 8 hours. The obtained modified carbon black dispersion is subjected to ultrafiltration for ...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of carbon black water-based color paste for a ballpoint pen. The method comprises the following steps: performing mixing and ball-milling on carbon black, de-ionized water and zirconium beads to prepare carbon black crude mixed liquid; or performing mixing and ball-milling on carbon black, zirconium beads and a primary amine solution to prepare the carbon black crude mixed liquid; reacting the carbon black crude mixed liquid with diazonium salt to obtain modified carbon black dispersion liquid; purifying and concentrating the modified dispersion liquid to obtain modified carbon black water-based color paste; adding a microcapsule wall material monomer and an initiator into the modified carbon black water-based color paste, and carrying out an in-situ polymerization reaction to obtain the carbon black water-based color paste for the ballpoint pen. The preparation method is easy to operate, low in cost and easy for industrialized production. The prepared carbon black water-based color paste has the characteristics of low viscosity, high surface tension, low conductivity and high stability, and can be directly used for preparing ballpoint pen ink; in addition, pigment dispersion particles are small in diameter and narrow in distribution.

Description

technical field [0001] The invention relates to a method for preparing a carbon black water-based color paste for a ballpoint pen, and belongs to the technical field of pigment ink. Background technique [0002] Color paste is a kind of pigment concentrate, that is, the pigment dispersion system is developed by using different pigments, through the surface treatment and surface coating of pigments, and through strict processing technology. Color paste can be used for coloring of coatings, inks, inks, etc. According to the different solvents used, the color paste is divided into water-based color paste, oil-based color paste, water-oil general color paste, etc. The good environmental protection of water-based products makes its application continuously expand, and accordingly continuously promotes the development of water-based colorants. An important use of carbon black water-based color paste is the colorant of water-based ink and neutral ink for ballpoint pens. In addi...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C09D17/00C09C3/08C09C3/06C09C3/04C09C1/48B01J13/14
Inventor 周雪琴杨帆刘东志李巍
Owner TIANJIN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com