Water-based altering agent and preparation method thereof

A correction agent, water-based technology, applied in the field of water-based correction agent and its preparation, can solve the problems of unsatisfactory covering power, complex production process, slow drying speed, etc. Effect

Inactive Publication Date: 2012-04-18
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This correcting glue stick also has the function of altering text, but because its formula contains gelatinous substances, its drying speed is slow, the waiting time for rewriting is long, the hiding power is not ideal, and the production process is complicated and the production cost is high.

Method used

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  • Water-based altering agent and preparation method thereof
  • Water-based altering agent and preparation method thereof

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preparation example Construction

[0045] The preparation method of water-based correction agent comprises the following steps: the following is calculated by weight percentage:

[0046] Step 1. Put 0.1%-3.9% film-forming agent and 30%-70% water into the reaction kettle at one time;

[0047] Step 2, dissolving the raw materials in step 1 completely at 80°C to 95°C;

[0048] Step 3. Lower the temperature to 50°C-90°C. After modification, add 2.5%-15% excipient to dissolve it and stir evenly;

[0049] Step 4, add 10% to 55% of the covering agent, and stir evenly;

[0050] Step 5, discharge, fill in the mold, and obtain the finished product after cooling.

[0051] The weight percentage of the film forming agent is 1.5%-3%, and the weight percentage of water is 48%-60%.

[0052] The melting temperature ranges from 85°C to 90°C.

[0053] The weight percentage of the excipient is 4%-9%; the cooling range in the step 3 is 70°C-85°C; the weight percentage of the covering agent in the step 4 is 30%-40%.

Embodiment 1

[0055] The preparation method of water-based correction agent of the present invention comprises the following steps: following by weight percentage:

[0056] Step 1, 2% of polyvinyl alcohol, polyvinyl formal, polyvinyl furfural and one or more mixtures thereof and 63% of water are thrown into the reactor at one time;

[0057] Step 2, dissolving the raw materials in step 1 completely at 85°C;

[0058] Step 3, then lower the temperature to 70°C, after modification, add 5% of sodium stearate, sodium laurate, sodium palmitate, sodium myristate and agar or a mixture of one or more of them to dissolve , and stir evenly;

[0059] Step 4, add 30% calcium carbonate, calcium sulfate, titanium dioxide and magnesium carbonate, one or more mixtures, and stir evenly;

[0060] Step 5, discharge, fill in the mold, and obtain the finished product after cooling.

Embodiment 2

[0062] The preparation method of water-based correction agent of the present invention comprises the following steps: following by weight percentage:

[0063] Step 1, 3% of polyvinyl alcohol, polyvinyl formal, polyvinyl furfural and one or more mixtures thereof and 48% of water are thrown into the reactor at one time;

[0064] Step 2, dissolving the raw materials in step 1 completely at 85°C;

[0065] Step 3, then lower the temperature to 70°C, after modification, add 9% of sodium stearate, sodium laurate, sodium palmitate, sodium myristate and agar or a mixture of one or more of them to dissolve , and stir evenly;

[0066] Step 4, add 40% of calcium carbonate, calcium sulfate, titanium dioxide and magnesium carbonate, one or more mixtures, and stir evenly;

[0067] Step 5, discharge, fill in the mold, and obtain the finished product after cooling.

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Abstract

The invention discloses a water-based altering agent. The water-based altering agent comprises the following raw materials in percentage by weight: 0.1 to 3.9 percent of film-forming agent, 10 to 55 percent of covering agent, 2.5 to 15 percent of excipient and 30 to 70 percent of solvent, wherein the sum of the content of the components of the raw materials is 100 percent. A preparation method for the water-based altering agent comprises the following steps of: adding 0.1 to 3.9 percent of film-forming agent and 30 to 70 percent of water into a reaction kettle at one time; dissolving the materials completely at the temperature of between 80 and 95 DEG C; cooling to 50 to 90 DEG C; modifying, adding 2.5 to 15 percent of excipient, dissolving the excipient and stirring uniformly; adding 10 to 55 percent of covering agent and stirring uniformly; discharging; encapsulating the materials into a die; and cooling to obtain the finished product. The water-based altering agent has simple components, short process flow, short manufacturing time and low production cost, and facilitates actual operation and large-scale popularization.

Description

technical field [0001] The invention relates to the stationery field of correction agents, in particular to a water-based correction agent and a preparation method thereof. Background technique [0002] At present, text correction products sold on the market mainly include two categories, namely correction fluid and correction tape. Once this type of product comes out, it is widely welcomed and recognized by people, and has become one of the essential stationery for primary and middle school students. However, both the correction fluid and the correction tape contain volatile organic solvents to varying degrees, such as benzene series and halogenated hydrocarbons, which have a serious impact on human health, especially for primary and middle school students who are in the growth and development period. In addition, the content of the correction fluid is generally a viscous liquid. After a period of use, some of the organic solvents in it will volatilize, causing the remainin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D10/00C09D129/04C09D129/14
Inventor 徐金宝钟国伦
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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