Erasable ball-pen ink composite and preparation method thereof

A technology of ballpoint pens and compositions, applied in ballpoint pens, inks, printing, etc., which can solve problems such as oil leakage at the joint between the pen tip and the oil pipe, broken lines when starting a pen, and broken lines when ink is written.

Inactive Publication Date: 2011-04-20
上海乐美文具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first purpose of the present invention is to obtain an ink composition that can solve the problems in the prior art of broken lines at the beginning of writing, oil leakage at the joint between the nib and the oil pipe, and serious problems of broken lines and pitting in ink writing after long-term storage
[0005] The second purpose of the present invention is to obtain an ink that can solve the problems in the prior art of broken lines at the beginning of wr...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0066] A kind of preparation method of described ballpoint pen erasable ink comprises the steps:

[0067] Soak and dissolve 30-75 parts by weight of elastomer resin, 10-30 parts by weight of pigment, and 0-2 parts by weight of ink rheology additive in 10-40 parts by weight of low-boiling point organic solvent and 5-10 parts by weight of medium-boiling point organic solvent and 5 to 20 parts of plasticizer liquid to obtain a mixture;

[0068] After the mixture is ground to the required viscosity and the particle size of the pigment particles reaches the required range, the erasable ink of the ballpoint pen is obtained by filtering.

[0069] In a preferred embodiment, the mixture is obtained after the elastomer resin is completely dissolved, the pigment is completely wetted and dispersed, and the rheology additive is uniformly dissolved.

[0070] In a preferred example, the ballpoint pen erasable ink is obtained by squeezing and filtering after repeated grinding on a three-roll...

Embodiment 1

[0079] Composition and component content of the present invention are as follows (unit is gram):

[0080] 19.5 grams of low-boiling point organic solvent (n-hexane);

[0081] 5 grams of medium boiling point organic solvent (amyl alcohol);

[0082] Plasticizer (epoxidized soybean oil) 10 grams;

[0083] 45 grams of polyvinyl acetate resin (400,000 molecular weight);

[0084] 20 grams of carbon black;

[0085] Fumed silica 0.5 g.

[0086] The preparation method of the present invention is as follows:

[0087] 45 parts by weight of polyvinyl acetate resin elastomer resin, the carbon black pigment of 20 parts by weight, 0.5 part by weight of fumed silica ink rheological additives are soaked and dissolved in 19.5 parts by weight of low boiling point, 5 parts by weight of medium boiling point organic solvent and 10 parts by weight After the elastomer resin is completely dissolved, the pigment is completely wetted and dispersed, and the rheology additive is uniformly dissolved, ...

Embodiment 2

[0090] Composition and component content of the present invention are as follows (unit is gram):

[0091] Low boiling point organic solvent (n-pentane) 19.5 grams;

[0092] 6 grams of medium boiling point organic solvent (cyclohexanone);

[0093] Plasticizer (acetyl tri-n-butyl citrate) 12 grams;

[0094] Ethylene vinyl acetate (500,000 molecular weight) 40 grams;

[0095] 22 grams of carbon black;

[0096] Fumed silica 0.5 g.

[0097] The preparation method of the present invention is as follows:

[0098] 40 parts by weight of ethylene vinyl acetate elastomer resin, the carbon black pigment of 22 parts by weight, 0.5 part by weight of fumed silica ink rheological additives are soaked and dissolved in 19.5 parts by weight of low boiling point, 6 parts by weight of medium boiling point organic solvent and 12 parts by weight After the elastomer resin is completely dissolved, the pigment is completely wetted and dispersed, and the rheology additive is uniformly dissolved, it...

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PUM

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Abstract

The invention provides an erasable ball-pen ink composite, comprising the following components in parts by weight: 10-40 parts of low boiling point organic solvent, 5-10 parts of intermediate boiling point organic solvent, 5-20 parts of plasticizer, 30-75 parts of elastomer resin, 10-30 parts of pigment and 0-2 parts of ink rheological agent. The erasable ball-pen ink composite can be used for solving the problems of discontinuous strokes, ink leakage at the joint of a pen point and an ink tube, and serious discontinuous strokes and pocking of ink after the a ball pen is placed for a long time in the prior art.

Description

technical field [0001] The invention relates to an ink composition and a preparation method thereof, in particular to a ballpoint pen erasable ink composition and a preparation method thereof. Background technique [0002] Erasable inks for ballpoint pens have been around for 20 years. From the time when writing was severely broken and pitted, and the writing feel was very poor, the writing lines are basically normal now. The feel is still worse than that of ordinary ballpoint pen inks, but because it has the ability to wipe clean with an eraser , with the function of modification, is still in constant development. At present, erasable ballpoint pen inks on the market have problems in writing, preservation, appearance and stable quality. The previous erasable ballpoint pen inks are basically made of natural or synthetic rubber, basically natural rubber, rubber solvent oil (generally gasoline, benzene or Xylene) is a solvent, which is produced by adding plasticizers and pigm...

Claims

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Application Information

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IPC IPC(8): C09D11/18B43K7/00
Inventor 徐红梅黄小喜陆宪明
Owner 上海乐美文具有限公司
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