Erasable neutral ink and preparation method thereof

A neutral ink, rubbing technology, applied in the direction of ink, household appliances, applications, etc., can solve the problem of lack of rubbing performance and rubbing ink

Inactive Publication Date: 2015-10-14
LOTUS STATIONERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, this area lacks the good rubbing ink of rubbing performance

Method used

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  • Erasable neutral ink and preparation method thereof
  • Erasable neutral ink and preparation method thereof
  • Erasable neutral ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0077] The invention provides a kind of preparation method of described erasable neutral ink, comprises the steps:

[0078] (a) The neutral ink component of component (A) is prepared according to the following steps:

[0079] Moisturizing agent, anti-mildew preservative, auxiliary agent, pH regulator, and microcapsule acid-base sensitive dye are added into the water in sequence.

[0080] After stirring well, add the thickener, stir well again, filter and defoam;

[0081] (b) A wipe liquid component providing component (B).

[0082] In a specific embodiment of the present invention, the thickener is preformed into a colloid, and then the method is used to prepare neutral ink.

[0083] Unless otherwise specified, various raw materials of the present invention can be obtained commercially; or prepared according to conventional methods in the art. Unless otherwise defined or stated, all professional and scientific terms used herein have the same meanings as those familiar to th...

preparation Embodiment 1

[0088] Table 1 can wipe neutral ink embodiment 1

[0089] type

components

dye

Microencapsulated Acid Blue 93

pH regulator

lactic acid

thickener

Modified bentonite

[0090] moisturizer

Sorbitol

Antiseptic and antifungal agent

Rocima623 (Rohm and Haas)

water

Deionized water

Auxiliary

Tween-20

[0091] Add 81 grams of water, 10 grams of humectant, 0.5 grams of additives, 2 grams of pH regulators, 0.3 grams of anti-corrosion and anti-mold agents, and 3 grams of dyes into the reaction kettle with paddle stirring, and stir evenly; then stir at a low speed Slowly add the prefabricated colloid with a thickener content of 0.15 g, and after the addition, increase the speed and stir evenly. Finally, filter and defoam to get the finished product.

[0092] The obtained erasable neutral ink product has good writing performance, good timely erasability and long-term erasability.

preparation Embodiment 2

[0094] Table 2 can wipe neutral ink embodiment 2

[0095] type

components

dye

Microencapsulated Direct Yellow 4

pH regulator

citric acid

thickener

Chitosan

moisturizer

xylitol

Antiseptic and antifungal agent

Proxel XL2 (United Kingdom Colloids Limited)

water

Deionized water

Auxiliary

Tween 80

[0096] Add 80 grams of water, 10 grams of humectant, 0.5 grams of additives, 3 grams of PH regulators, 0.3 grams of anti-corrosion and anti-mold agents, and 3 grams of dyes into the reaction kettle with paddle stirring, and stir evenly; then stir at a low speed Slowly add the prefabricated colloid with a thickener content of 0.15 g, and after the addition, increase the speed and stir evenly. Finally, filter and defoam to get the finished product.

[0097] The obtained erasable neutral ink product has good writing performance, good timely erasability and long-term erasability.

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Abstract

The invention provides an erasable neutral ink composition comprising a neutral ink component (A) and an erasable liquid component (B), wherein the component (A) comprises the following components in parts by weight: 2.0-7.0 parts of a microcapsule acid-alkali sensitive dye (a), 0.1-0.2 part of a thickening agent (b), 1.0-3.0 parts of a pH regulator (c), 10.0-15.0 parts of a humectant (d), 0.05-0.3 part of an antiseptic and anti-mildew agent (e), 0-0.5 part of other auxiliary agents (f) and 74-81.75 parts of deionized water (g), wherein the total weight of the components (a)-(g) accounts for 95-100% of the total weight of the composition, the viscosity of the neutral ink component is 1500-3000mPa.s, and the thixotropic value is more than or equal to 2.5; and the component (B) is an alkaline solution comprising an aqueous solution of one or more of sodium hydroxide, 2-amino-2-methyl-1-propanol, N-methylethanolamine, dimethylethanolamine, monoethanolamine, diethanolamine, triethanolamine, butyl ethanolamine, butyl diethanolamine, 2-amino-2-ethyl-1,3-propylene glycol and N-aminopropyl-methylethanolamine.

Description

technical field [0001] The invention relates to an ink and a manufacturing method thereof, in particular to an erasable neutral ink and a manufacturing method thereof. Background technique [0002] Ink is an essential school supplies for students. Ordinary ink, once written on paper, is very difficult to wipe off. For students who are studying, it is extremely inconvenient. The more commonly used correction method among students is to use correction fluid. This is a white liquid based on quick-drying organic solvents. It usually has a pungent odor and is toxic, which is not conducive to the physical and mental health of students. Moreover, its alteration effect is not ideal, and the rewriting performance of the coating is poor. [0003] In addition to the characteristics of neutral ink, the erasable neutral ink has the biggest advantage that the ink writing can be easily erased with the erasing liquid without leaving any traces. The prior art has disclosed some inks wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/18C09D11/17
CPCC09D11/18C09D11/17
Inventor 高旭东周炜黄小喜
Owner LOTUS STATIONERY
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