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Method for preparing white board marker ink allowing dry erasing to be achieved easily

A pen-ink and dry-erasing technology, which is applied to inks, household utensils, applications, etc., can solve problems such as gloss, poor wear resistance, slow volatilization speed, and difficulty in dry-erasing, and achieve good gloss, low cost, and simple preparation steps Effect

Inactive Publication Date: 2016-12-14
郭迎庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an easy-to-dry-erase whiteboard marker for the existing water-based whiteboard markers that have slow ink volatilization speed, relatively slow film formation, poor gloss and wear resistance, and are not easy to dry erase. The preparation method of the ink, the present invention first crushes the fruit of Wufanzi, extracts and oxidizes the juice to obtain a melanin solution, then cultures Bacillus subtilis, breaks the cells to obtain a cell extract, and then mixes it with the melanin, Finally, add resin, fillers, additives, etc. and stir to make an easy-to-dry erase whiteboard pen ink

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] First, weigh 10g of mature Wufanzi fruit, mash it with a mortar, add the mashed juice into a beaker, then add 100mL of 75% ethanol solution, place the beaker in a water bath, and heat up to 60°C , soak and extract for 2 hours, filter to obtain the filtrate, carry out vacuum distillation on the filtrate to obtain a solid, add the solid to a beaker, then add 100 mL of deionized water, stir for 5 minutes, and filter with an ultrafiltration membrane to obtain a melanin precursor solution, which is used to melanin Add 10mL hydrogen peroxide solution with a mass concentration of 28% to the precursor solution, stir for 1 hour, filter to obtain a melanin solution, and set aside; sequentially weigh 10g glucose, 8g peptone, 3g sodium chloride, 0.3g beef extract and 800mL deionized water and stir Obtain the culture medium, then inoculate the culture medium with 8% Bacillus subtilis according to the inoculum amount, and culture it on a shaker at 36°C and 200r / min for 24h, then place...

example 2

[0022]First, weigh 15g of mature Wufanzi fruit, mash it with a mortar, add the mashed juice into a beaker, then add 150mL of 75% ethanol solution, place the beaker in a water bath, and heat up to 65°C , soak and extract for 2.5h, filter to obtain the filtrate, carry out vacuum distillation on the filtrate to obtain a solid, add the solid to a beaker, then add 150mL deionized water, stir for 8min, and filter with an ultrafiltration membrane to obtain a melanin precursor solution. Add 15 mL of 28% hydrogen peroxide solution to the melanin precursor solution, stir for 1.5 hours, filter to obtain a melanin solution, and set aside; sequentially weigh 15 g of glucose, 12 g of peptone, 4 g of sodium chloride, 0.4 g of beef extract, and 900 mL of deionized Stir with water to obtain the culture medium, then inoculate the culture medium with 9% Bacillus subtilis according to the inoculum amount, and culture it with a shaker at 37°C and 210r / min for 30h, then place it in a centrifuge, and...

example 3

[0025] First, weigh 20g of mature Wufanzi fruit, mash it with a mortar, add the mashed juice into a beaker, then add 200mL of 75% ethanol solution, place the beaker in a water bath, and heat up to 70°C , soak and extract for 3 hours, filter to obtain the filtrate, carry out vacuum distillation on the filtrate to obtain a solid, add the solid to a beaker, then add 200 mL of deionized water, stir for 10 min, and filter with an ultrafiltration membrane to obtain a melanin precursor solution, which is added to the melanin Add 20mL of hydrogen peroxide solution with a mass concentration of 28% to the precursor solution, stir for 2 hours, filter to obtain a melanin solution, and set aside; Weigh 20g of glucose, 15g of peptone, 5g of sodium chloride, 0.5g of beef extract and 1000mL of deionized water and stir Obtain the culture medium, then inoculate the culture medium with 10% Bacillus subtilis according to the inoculum amount, shake and culture on a shaker at 38°C and 220r / min for 3...

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Abstract

The invention relates to a method for preparing white board marker ink allowing dry erasing to be achieved easily and belongs to the technical field of fine chemical products. The method comprises the steps of mashing vaccinium fragile Franch. firstly, conducting crude extraction and oxidization on juice to obtain melanin solution, then conducting culture and cell breaking on bacillus subtilis to obtain cell extract, mixing the cell extract with melanin, and finally adding resin, filler, auxiliaries and the like to be stirred to obtain the white board marker ink allowing dry erasing to be achieved easily. The evaporation speed of a solvent in the white board marker ink is high, and evaporation can be finished within 10-20 s only, which is 20-30 s sooner than water-based white board marker ink in the market; furthermore, film formation is quick, glossiness is high, performances are still good during intermittent writing, and lasting time after writing is 1-2 h longer than that of water-based white board marker ink in the market. The white board marker ink allowing dry erasing to be achieved easily can be completely erased, and is environment-friendly, free of pollution and suitable for various working environments.

Description

technical field [0001] The invention relates to a method for preparing ink for an easy-to-dry-erase whiteboard pen, and belongs to the technical field of fine chemical products. Background technique [0002] Whiteboard pen is a new type of writing pen that can write on a smooth non-absorbent hard board and is easy to erase. It is a popular tool for daily teaching and training writing in various schools, enterprises and institutions in recent years. Whiteboard pens are smooth in writing, dust-free and erasable, easy to use, and widely used. They are the upgraded products of traditional chalk. Whether in foreign countries or at home, whiteboard pens are becoming a large-demand, widely-used, and fast-consumption teaching and office tool. Essential supplies. [0003] Whiteboard pen ink is the main component of whiteboard pens, which plays a vital role in its writing performance and quality. The types and pros and cons of its quality are directly related to the wide application ...

Claims

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Application Information

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IPC IPC(8): C09D11/16
CPCC09D11/16
Inventor 郭迎庆孟浩影
Owner 郭迎庆
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