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Liquid chalk

A technology of chalk and liquid, applied in the direction of pencil lead, non-active pencil, printing, etc., which can solve the problem of waste

Inactive Publication Date: 2015-07-01
滕世华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When chalk is used, it is often difficult to avoid producing "chalk heads", resulting in waste

Method used

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  • Liquid chalk
  • Liquid chalk
  • Liquid chalk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Its mass parts proportioning is:

[0011]

Embodiment 2

[0013] Its mass parts proportioning is:

[0014]

Embodiment 3

[0016] Its mass parts proportioning is:

[0017]

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PUM

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Abstract

The invention provides novel liquid chalk. The liquid chalk does not generate chalk dust and chalk ends, and is clean and environmentally friendly, and no waste exists. The liquid chalk comprises polyvinyl alcohol, isopropyl alcohol, ethyl alcohol and color essences. The liquid chalk comprises, by mass, 10 parts to 20 parts of the polyvinyl alcohol, 15 parts to 40 parts of the isopropyl alcohol, 100 parts of the ethyl alcohol and 5 parts to 15 parts of the color essences.

Description

technical field [0001] This invention relates to chalk and, more particularly, to a new type of liquid chalk. Background technique [0002] Chalk is a tool widely used in daily life and is generally used for writing on blackboards. The chalk composition that uses now mostly is calcium carbonate (limestone) and calcium sulfate (gypsum), or contains a small amount of calcium oxide. [0003] Chalk is often unavoidable to produce " chalk head " when using, and causes waste. Contents of the invention [0004] The invention provides a novel liquid chalk, which does not generate chalk dust and chalk bits, is clean and environmentally friendly, and has no waste. [0005] The chalk includes: polyvinyl alcohol, isopropanol, ethanol, coloring agent. [0006] Its mass parts proportioning is: [0007] [0008] Preparation: Mix the above components, grind and filter. detailed description [0009] Example 1 [0010] Its mass parts proportioning is: [0011] [0012] Exampl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43K19/00C09D13/00
CPCC09D13/00
Inventor 滕世华
Owner 滕世华