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Environment-friendly blackboard writing liquid

A kind of blackboard writing liquid, environmental protection technology, applied in the direction of ink, household utensils, application, etc., can solve the problems of easy drying of the pen tip, poor writing fluency, etc. film effect

Inactive Publication Date: 2019-07-23
高俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an environment-friendly blackboard liquid for the problems of poor writing fluency and easy drying of the nib in the current blackboard liquid

Method used

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  • Environment-friendly blackboard writing liquid

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preparation example Construction

[0023] The preparation method of the lubricating compatibility additive is as follows: take tung oil and mix it with glycerin at a mass ratio of 10-20:3-7, add trimethylolpropane with 30-50% of the mass of tung oil, pass in nitrogen protection, and heat up to 210-220°C Stir and mix for 20-30 minutes to obtain a mixture. Take the mixture and add lithium hydroxide at a mass ratio of 100-150:1-3, keep it at 220-230°C for 1-3 hours, and cool to room temperature to obtain a lubricant-compatible additive.

[0024] The preparation method of cross-linked film-forming active agent is:

[0025] (1) Take methyl methacrylate and add 10% sodium hydroxide solution according to the mass ratio of 10~30:1~3, stir and mix for 20~30min, filter, take the filtrate to adjust the pH to 7~7.2, take the iso To form tridecyl fatty alcohol ether, add sodium lauryl sulfate and deionized water according to the mass ratio of 2~5:1~3:10~15, and stir and mix at 30~40°C for 20~30min to obtain an emulsifier. ...

Embodiment 1

[0034] The preparation method of the lubricating compatibility additive is as follows: take tung oil and add glycerin in a mass ratio of 10:3 to mix, add trimethylolpropane with 30% of the mass of tung oil, pass in nitrogen protection, heat up to 210°C and stir and mix for 20 minutes to obtain a mixture. Lithium hydroxide was added to the mixture at a mass ratio of 100:1, kept at 220°C for 1 hour, and cooled to room temperature to obtain a lubricant-compatible additive.

[0035] The preparation method of cross-linked film-forming active agent is:

[0036] (1) Take methyl methacrylate and add 10% sodium hydroxide solution at a mass ratio of 10:1, stir and mix for 20 minutes, filter, take the filtrate to adjust the pH to 7, take isomerized tridecyl fatty alcohol ether by mass Add sodium lauryl sulfate and deionized water at a ratio of 2:1:10, stir and mix at 30°C for 20 minutes to obtain an emulsifier, and take 5 parts of filtrate and 3 parts of 2-ethylhexyl acrylate , 2 parts ...

Embodiment 2

[0045] The preparation method of the lubricating compatibility additive is as follows: take tung oil and add glycerin in a mass ratio of 20:7 to mix, add trimethylolpropane with 50% of the mass of tung oil, pass in nitrogen protection, heat up to 220°C and stir and mix for 30 minutes to obtain the mixture. Lithium hydroxide was added to the mixture at a mass ratio of 150:3, kept at 230°C for 3 hours, and cooled to room temperature to obtain a lubricant-compatible additive.

[0046] The preparation method of cross-linked film-forming active agent is:

[0047] (1) Take methyl methacrylate and add 10% sodium hydroxide solution at a mass ratio of 30:3, stir and mix for 30 minutes, filter, take the filtrate to adjust the pH to 7.2, take isotridecyl fatty alcohol ether by mass Add sodium lauryl sulfate and deionized water at a ratio of 5:3:15, stir and mix at 40°C for 30 minutes to obtain an emulsifier, and take 10 parts of filtrate and 6 parts of 2-ethylhexyl acrylate , 5 parts of...

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Abstract

The invention discloses an environment-friendly blackboard writing liquid, and belongs to the field of environment-friendly teaching. The lubricating compatible additive increases adhesive film performance of the blackboard writing liquid formed film, the blackboard writing liquid is not prone to pasting and can better perform drying film forming, and compatibility and flow performance of the components are increased by lubricating performance of grease molecules; by means of a prepared cross-linked film-forming active agent, latex particles are not prone to interaction, stability of the blackboard writing liquid is increased, adhesion fastness is increased, and water resistance, acid resistance and alkali resistance are enhanced. A prepared moisture retention additive increases water holding capacity, has higher moisture absorption and moisture retention properties, not only can adjust moisture, but also has emulsifying property, and can be well mixed with ink to form a moisture retention film on the surface of the blackboard writing liquid, and a dispersion system is formed; a prepared active pigment has good dispersion stability and low viscosity, and dispersion performance of the blackboard writing liquid is improved by modified pigment dispersion color paste. The problems that writing fluency of a current blackboard writing liquid is poor and a nib dries easily are solved.

Description

technical field [0001] The invention belongs to the field of environmental protection teaching, in particular to an environment-friendly blackboard writing liquid. Background technique [0002] At present, chalk is mainly used for writing on the green board (blackboard) in the classroom. The history of chalk has exceeded one hundred years. As a teaching tool, chalk not only brings knowledge to people, but the chalk dust is harmful to the health of teachers and students as well as the classroom environment. According to statistics, more than 10,000 tons of chalk dust are produced in classrooms across the country every year, and many fine dusts float in the air for up to six hours. Various heavy metal elements in chalk have greater harm to the human body. The health of teachers is often inseparable from the hazards of chalk dust, but what most people don't notice is that the health of students is also closely related to chalk dust. For a long time, the pollution of chalk dust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/16
CPCC09D11/16
Inventor 高俊
Owner 高俊
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