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Ink composition and writing instrument

A technique for writing implements and compositions, which is applied to writing utensils, ink pens with ink storage tubes in the pen barrel, ink, etc., and can solve the problem that white graphics cannot be maintained

Inactive Publication Date: 2007-01-10
ADGER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when working for a long time, this ink has the defect that the white pattern cannot be maintained for the necessary time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 55 parts of sodium benzoate were dissolved in 100 parts of water, and 0.5 parts of polyethylene oxide (molecular weight 600,000-1,100,000 (the same below)) was added thereto to completely dissolve it. When this solution is impregnated into the cotton pad (ink bag) of a signature pen to make a pen, the solution will leach from the refill inserted into the front end of the cotton pad. If you use this pen to draw a line on a black cloth, a white line will appear on the cloth as the solvent evaporates. Next, the white line was wiped with a cloth containing water to erase the drawn line. In addition, the black cloth on which the white lines were drawn was left at room temperature for 15 days in the same manner, but the white lines did not disappear.

Embodiment 2

[0019] Dissolve 59 parts of sodium benzoate in a mixed solvent composed of 100 parts of water and 50 parts of ethanol, and add 1 part of polyethylene oxide to it to dissolve completely. When this solution is impregnated into the cotton pad (ink bag) of a signature pen to make a pen, the solution will leach from the refill inserted into the front end of the cotton pad. Use this pen to draw a line on the black fabric, and as the solvent evaporates, a white line will appear on the fabric. The use of ethanol facilitates the evaporation of the solvent. Next, the white line was wiped with a cloth containing water to erase the drawn line. In addition, the black cloth on which the white lines were drawn was left at room temperature for 15 days in the same manner, but the white lines did not disappear.

Embodiment 3

[0021] Inks having the following compositions were produced.

[0022] Water: 100 parts

[0023] Ethanol: 50 parts

[0024] Sodium benzoate: 40 parts

[0025] Polyethylene oxide: 1.2 parts

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PUM

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Abstract

An ink composition giving erasable white ink patterns and containing water and sodium benzoate dissolved in the water in an amount of at least 5 parts by weight per 100 parts by weight of the water. A writing instrument having a pen tip and an ink tank which contains the above ink composition and which is in fluid communication with the pen tip.

Description

technical field [0001] The present invention relates to an ink composition and a writing instrument using the ink composition. The ink composition can record white characters, lines and other figures on the surface of cloth, paper, etc., and the white figures can be easily erased with water. Background technique [0002] Conventionally, various inks (for example, Japanese Laid-Open Publication No. S50-77126, S57-16077 No. 2, and S55-27313 No.) are known as inks having decolorization properties for written characters or lines. However, these achromatic inks all use color-developing dyes, and white characters or lines cannot be obtained. Therefore, these inks are not suitable for recording on black or dark colored surfaces. [0003] On the other hand, inks obtained by dispersing white pigments such as titanium oxide in solvents are known as inks suitable for recording on black or dark surfaces. However, characters or lines recorded with such inks are difficult to erase. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/16B43K5/00
CPCC09D11/16
Inventor 饭岛善四郎
Owner ADGER IND
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