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

Neutral erasable ink composition and preparation method thereof

An ink composition and neutral technology, applied in the direction of ink, cleaning methods and appliances, chemical instruments and methods, etc., can solve the problems of insufficient ball milling, low ball mill efficiency, uneven particle size, etc.

Pending Publication Date: 2021-01-29
闫西安
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a neutral erasable ink composition with uniform rheology, smooth writing, good stability and durability, safety and environmental protection, and most importantly , the handwriting can be easily erased, thereby solving the problems raised in the above-mentioned background technology. At the same time, in the ball milling step, due to the low efficiency of the ball mill used, there are problems such as insufficient ball milling and uneven particle size, resulting in poor quality of the finished product. So the grinding step was improved

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Neutral erasable ink composition and preparation method thereof
  • Neutral erasable ink composition and preparation method thereof
  • Neutral erasable ink composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] S1, pre-treating the alcohol-soluble dye, weighing 3% alcohol-soluble nigrosine in a proportion by weight, placing it in a wet ball mill, grinding for 10 minutes, and then passing through a 100-mesh sieve;

[0073] S2. Prepare a mixed solution, weigh the stabilizer and dispersant in parts by weight, 0.5% sodium alginate, and 10% sodium methylene dinaphthalene sulfonate, mix them in a wet ball mill, grind for 10 minutes, and then pour them again Add 0.5% polyacrylic acid, 0.5% polyacrylamide, and 0.5% octylphenol, adjust the stirring rate to 400rpm, and stir for 10min, so that the viscosity of the mixture is 0.01-0.05cP;

[0074] S3, centrifuge and wash the mixed solution, use ammonium acetate buffer to adjust the pH value of the mixed solution in the range of 7.0-7.5, then let it stand at room temperature for 1-2h, place the mixed solution in a centrifuge for centrifugation, and adjust the centrifugal speed Centrifuge at 3000rpm for 10min, repeat the centrifugation thre...

Embodiment 2

[0083] S1, pretreating the alcohol-soluble dye, weighing 5% alcohol-soluble nigrosine, placing it in a wet ball mill, grinding for 15 minutes, and then passing through a 100-mesh sieve;

[0084] S2. Prepare the mixed solution, take the stabilizer and dispersant in parts by weight in proportion, 0.8% sodium alginate, 12% sodium methylene dinaphthalene sulfonate, mix them in a wet ball mill, grind for 15min, and then pour Add 0.75% polyacrylic acid, 0.75% polyacrylamide, and 0.75% octylphenol, adjust the stirring rate to 500rpm, and stir for 15min, so that the viscosity of the mixture is 0.01-0.05cP;

[0085]S3, centrifuge and wash the mixed solution, use ammonium acetate buffer to adjust the pH value of the mixed solution in the range of 7.0-7.5, then let it stand at room temperature for 1-2h, place the mixed solution in a centrifuge for centrifugation, and adjust the centrifugal speed Centrifuge at 4000rpm for 12min, repeat the centrifugation three times, collect the precipita...

Embodiment 3

[0094] S1, pretreating the alcohol-soluble dye, weighing 7% alcohol-soluble nigrosine, placing it in a wet ball mill, grinding for 20 minutes, and then passing through a 100-mesh sieve;

[0095] S2. Prepare a mixed solution, weigh the stabilizer and dispersant in parts by weight, 1.0% sodium alginate, 15% sodium methylene dinaphthalene sulfonate, mix them in a wet ball mill, grind for 20min, and then pour them again Add 1.0% polyacrylic acid, 1.0% polyacrylamide, and 1.0% octylphenol, adjust the stirring rate to 600rpm, and stir for 20min, so that the viscosity of the mixture is 0.01-0.05cP;

[0096] S3, centrifuge and wash the mixed solution, use ammonium acetate buffer to adjust the pH value of the mixed solution in the range of 7.0-7.5, then let it stand at room temperature for 1-2h, place the mixed solution in a centrifuge for centrifugation, and adjust the centrifugal speed Centrifuge at 5000rpm for 15min, repeat the centrifugation three times, collect the precipitate, an...

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

No PUM Login to View More

Abstract

The invention discloses a neutral erasable ink composition and a preparation method thereof, and belongs to the technical field of ink preparation. The neutral erasable ink composition comprises the following raw materials: 2-10% of an alcohol-soluble dye, 25-35% of a film forming agent, 0.5-1% of a lubricant, 0.5-1% of a surfactant, 0.5-1% of a stabilizer, 1-2% of a thickener, 10-15% of a dispersant, 30-45% of a solvent, 0.5-1% of a leveling agent, and 0.05-0.5% of an antifoaming agent. The preparation method comprises the following preparation steps of: pretreating a color-based pigment; adding auxiliary materials, performing mixing, ball-milling and dispersing; preparing a pigment aggregate in the form of an atomized solvent and a wetting agent, and softening the pigment aggregate; carrying out high-speed shearing to realize de-aggregation and pre-dispersion to obtain sub-nano-scale particles; and performing defoaming and filtering. The ink has good writing performance; no obvious trace exists on the back face of writing paper; and handwriting can be erased easily through a common eraser.

Description

technical field [0001] The invention relates to the technical field of ink preparation, in particular to a neutral erasable ink composition and a preparation method thereof. Background technique [0002] Ink is one of the important writing materials in human social life. Among them, neutral ink has become an important reason restricting the development of gel pens due to its special properties. The current market has a large demand for neutral inks, and the development market prospects and economic benefits are very considerable. [0003] In the existing technical field, the quality of gel pen properties is mainly reflected in the ink component formula and preparation method. During the preparation process, the viscosity, surface tension and pH value of the ink must be kept at a certain value to ensure the quality of the ink. At the same time, the prepared ink must be smooth and continuous when writing, and the stability of the ink must be maintained to ensure that the ink...

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): C09D11/18B02C17/10B02C17/18B02C23/18B08B9/093
CPCC09D11/18B02C17/10B02C17/18B02C23/18B08B9/093
Inventor 马振海闫西安
Owner 闫西安
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