JPH08100140A - Ink erasor and wiping off using the same - Google Patents

Abstract

PURPOSE: To obtain an ink erasor, capable of clearly erasing a script (a letter or a figure written by a marker using an ink for a writing board) and an impression mark impressed with an impression tool (a letter or a figure with an ink containing a colorant soluble in an oily solvent) without spreading a colorant to a wide range due to its ability to raise both as a film state without erasing a required site, further emitting any malodor and causing a danger of ignition due to the use of water as the solvent. CONSTITUTION: This ink erasor uses water as a solvent, is capable of selecting two or more from propylene glycol monomethyl ether, morpholine, sodium tripolyphosphate and ammonia and comprises an anionic or an amphoteric surfactant and a nonionic surfactant having >=20 to <=100 number of added mol of ethylene oxide. Furthermore, this method for wiping off a script with the erasor is to enable the interposition thereof in a wet state between a writing board and the script and wipe off the script as a film state in an ink for the writing board. The method for wiping off an impression mark with the ink erasor is to enable the interposition thereof in a wet state between a material to be impressed and an impression mark and wipe off the impression mark as a film state in an ink for a seal, a stamp pad or a vermilion inkpad.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a glass, a pottery, a resin plate, a film for an OHP (overhead projector), especially a white board whose surface is made of enamel or synthetic resin, and a color board coated on the white board. Handwriting written on the electronic board with a marker for the board (hereinafter, handwriting is
Characters and designs written with a marker that uses ink for writing board) and imprints imprinted with a marking tool (hereinafter, the imprint is
The present invention relates to an ink erasing liquid that removes characters and patterns due to printing with an ink that uses a colorant that is soluble in an oily solvent.

[0002]

2. Description of the Related Art Conventionally, glass, metal, pottery, resin plate, O
Films for HP (overhead projectors), ho-wide boards made of enamel or synthetic resin, or painted color boards or electronic boards with markers for boards, or marking with a marking tool.
To remove these handwritings and imprints, they were wiped off with a cloth. However, it is possible to erase with just the cloth immediately after writing or imprinting, but when time passes, it cannot be erased cleanly with the cloth alone. In particular, the imprint imprinted on a stamp or the like cannot be taken with only cloth from the beginning. Therefore, there are various inventions of an ink erasing liquid for removing these handwritings and imprints. For example,
(1) Japanese Patent Publication No. 5-75028 (hereinafter referred to as (a)),
(2) JP-A-63-37173 (hereinafter referred to as (B))
For the wiping method, see (3) JP-A-1-29.
No. 9098 (hereinafter referred to as (C)) and the like exist as prior art. These (a) and (b) use organic solvents as the solvent, and the ink erasing solution using these organic solvents will not leave handwriting or imprints written or imprinted on the above-mentioned marking object. It is supposed to be melted and removed. However, since the handwriting and the imprint are dissolved and removed from the non-absorbing surface by using such an organic solvent, the coloring agent for the handwriting and the imprint is also dissolved, and since it is wiped off in such a state, it is rather spread over a wide range. Further, the bleeding of the organic solvent spreads to a necessary portion and erases it. Further, the ink erasing liquid that becomes an organic solvent will produce an odor of the organic solvent unless a fragrance or the like is added. Further, since it is an organic solvent, there is a problem of flammability. (C) is
The present invention relates to a method for erasing characters, patterns, etc. drawn on a whiteboard, which is a method for wiping off a colorant (pigment and resin) and an oil layer separately from each other. It goes without saying that they are different.

[0003]

As described above, the handwriting of the conventional marker for the board and the colorant of the imprint by the marking tool are dissolved, and rather spread and bleed, which results in contamination. In addition, the odor of the organic solvent is generated. In addition, flammability problems arise. Therefore, it dissolves the colorant in the handwriting and imprint, does not erase the necessary parts, does not bleed, and does not cause the problem of flammability with less odor. The present invention provides a liquid and a wiping method using the liquid.

[0004]

Means for Solving the Problems Water is used as a solvent, and two or more kinds of propylene glycol monomethyl ether, morpholine, sodium tripolyphosphate, and ammonia can be selected, and an anion or amphoteric surfactant and ethylene oxide addition mole number 20 mol. As described above, the ink eraser is characterized by comprising 100 mol or less of a nonionic surfactant, and one or two or more kinds of interfaces which enable the organic solvent and the synthetic resin and peeling using the ink eraser. An activator, further, a writing plate ink containing a pigment that is dispersible in the organic solvent, a wiping method using the ink eraser capable of intervening in a wet state between the writing plate and the handwriting and forming the handwriting as a film In addition, printing inks, stamp base inks, and red inks that use colorants that are soluble in oily solvents In a method wiping by the eraser liquid to seal product and imprint can interposed wetting conditions between the imprint a film shape. Furthermore, it is a method of injecting a jetting gas and the ink erasing liquid into an aerosol container, and wiping off a handwriting and an imprint, which are jetted from the jet port, as a film.

[0005]

[Function] Glass, resin plate, film for overhead projector, non-absorptive writing surface, white board made of enamel or synthetic resin on the surface, color board coated on it, and electronic board for boards The handwriting written with a marker or the imprint imprinted with a marking tool that uses an ink that contains a colorant that can be dissolved in an oil solvent is
The following are the conventionally known states. First of all, the invention of the ink for writing plate includes a pigment dispersible with an organic solvent, a synthetic resin, a surfactant such as Japanese Patent Publication No. 50-7973 and Japanese Patent Publication No. 1-29292 filed by the present applicant. The handwriting written on the above-mentioned board with the board marker is as shown in Fig. 1, and it is in the state of pigment + resin, surfactant, board (writing board) from the top, just above the board (writing board). Is where the surfactant is located. As time passes, the action of the surfactant weakens and it becomes difficult to remove it. Further, for an ink containing a pigment that can be dispersed using an organic solvent and a dye that can be dissolved, Japanese Patent Publication Nos. 52-4202 and 54-223, which are the prior applications of the applicant, are disclosed.
There are No. 32 etc., and the imprint imprinted on the board with the imprinting tool using these inks is as shown in Fig. 2, and the pigment +
It is in the state of resin, castor oil and its derivative, and board, and castor oil and its derivative are located right above the board.

The carboxybetaine-type amphoteric surfactant of the present invention and the ether-type nonionic surfactant act on these surfactants, castor oil and derivatives thereof, and the above-mentioned surfactants, castor oil and derivatives, and boards. Intervenes between and to lift up the whole, including oil. In this way, the film of the handwriting or the imprint that has risen can be wiped off with a dry cloth or paper. In this way, since the handwriting and the imprint are raised, the coloring agent in the ink can be formed into a film without being diffused and can be wiped off with a cloth or the like. In addition, as a method of applying to a board or the like which is a non-absorption surface of the ink erasing liquid, it is possible to spray it in a conventionally known mist form, or to form a foam or mist foam and apply it by spraying. Good.

[0007]

EXAMPLES Examples of the present invention will be described in more detail. Anionic or amphoteric surfactant and ethylene oxide addition as a cleaning active agent, a nonionic surfactant having a molar number of 20 mol or more and 100 mol or less, propylene glycol monomethyl ether and sodium tripolyphosphate as a cleaning aid, and morpholine and ammonia as a solution stabilizer. Water (2
5% concentration), two or more types can be selected, and water is mixed as a solvent. Anionic surfactant is preferably in the range of 0.01 to 1.0% by weight, and betaine type coconut oil fatty acid aminopropyl betaine is blended in the detergent for cleaning, and the ethylene oxide addition mole number is 20 m.
ol or more and 100 mol or less of nonionic surfactant.
A preferable range is 01 to 1.0% by weight, and polyoxyethylene alkyl ether (40 mol) is blended. If the amount of the activator is more than the above-mentioned weight%, the cleaning property will be improved, but it will remain as white stains on the board surface after wiping. On the other hand, if the amount is less than the above-mentioned weight%, the detergency of the handwriting and the imprint on the whiteboard with respect to the activator and castor oil deteriorates. In addition, in the types of detergents for cleaning other than the above, sodium lauryl sulfate is used as the anionic surfactant, and polyoxyethylene fatty acid ester (55 mol) and polyoxyethylene hydrogenated castor oil (100 mol) are used as the nonionic surfactant. , Polyoxyethylene (45 mol) polyoxypropylene glycol (35
mol) and polyoxyethylene sorbitan monooleate (20 mol) can be used. As a cleaning aid, propylene glycol monomethyl ether is 1.0 to 10
Sodium tripolyphosphate is 0.1 to 5.0% by weight.
The preferred range is wt%. Further, as a solution stabilizer, morpholine is used in an amount of 0.05 to 1.0% by weight, 25
A preferable range is 0.04 to 2% by weight of the ammonia water having a concentration of 0.04 to 2% by weight. In addition, alkylol amide can be used as the solution stabilizer. Finally, the solvent is water,
Using water purified by ion exchange, 70-98.8
Weight percent is the preferred range. In addition to the components shown above, various additives such as antiseptic / antifungal agents, wetting agents, pH adjusting agents, viscosity adjusting agents, antifreezing agents and the like can be appropriately used.

Next, an example of actual formulation will be shown. (Example 1) -Sodium lauryl sulfate 0.2% by weight-Polyoxyethylene alkyl ether (40 mol) 0.3% by weight-Propylene glycol monomethyl ether 5.0% by weight-Ammonia water (25% concentration) 2.0 % By weight • Morpholine 0.5% by weight • Sodium tripolyphosphate 0.5% by weight • Water 91.5% by weight

Example 2 Sodium lauryl sulfate 0.5% by weight Polyoxyethylene fatty acid ester (55 mol) 0.2% by weight Propylene glycol monomethyl ether 8.0% by weight Sodium tripolyphosphate 0.5% by weight % ・ Water 90.8% by weight

Example 3 Sodium lauryl sulfate 0.05% by weight Polyoxyethylene hydrogenated castor oil (100 mol) 0.50% by weight Propylene glycol monomethyl ether 1.00% by weight Sodium tripolyphosphate 0.50 % By weight Alkylol amide 0.50% by weight Water 97.45% by weight

(Example 4) 0.5% by weight of coconut oil fatty acid aminopropyl betaine-0.2% by weight of polyoxyethylene alkyl ether (40 mol) -2.0% by weight of propylene glycol monomethyl ether-Ammonia water (25%) Concentration) 1.0 wt% -morpholine 0.3 wt% -sodium tripolyphosphate 0.2 wt% -water 95.5 wt%

Example 5: Palm oil fatty acid aminopropyl betaine 0.05% by weight Polyoxyethylene fatty acid ester (55 mol) 1.00% by weight Propylene glycol monomethyl ether 5.00% by weight Sodium tripolyphosphate 50% by weight Water 93.45% by weight

(Example 6) coconut oil fatty acid aminopropyl betaine 1.00% by weight polyoxyethylene (45 mol) polyoxypropylene glycol (35 mol) 0.50% by weight ammonia water (25% concentration) 2.00% by weight % Sodium tripolyphosphate 0.50% by weight Water 96.00% by weight

Example 7 Palm oil fatty acid aminopropyl betaine 0.50% by weight Polyoxyethylene sorbitan monooleate (20 mol) 0.50% by weight Propylene glycol monomethyl ether 7.00% by weight Sodium tripolyphosphate 2. 00% by weight ・ Water 90.00% by weight

These Examples 1, 2, 3, 4, 5, 6,
No. 7, the total is 100% by weight. Examples 1, 2,
Conventional examples 1, 2 which are whiteboard cleaners using 3, 4, 5, 6, 7 and the organic solvent disclosed in the prior art.
Comparison test with (both using ethyl alcohol) various whiteboards and glass, resin plates, pottery, OHP
(Overhead Project) Film was used. The performance tables are Tables 1 and 2 below. Table 1 is a performance table for handwriting and Table 2 is a performance table for imprints.

[0016]

[Table 1]

[0017]

[Table 2]

* Test method: The handwriting written on each board with the above-mentioned marker for the board and the imprint imprinted with the marking tool are left for 1 day (conditions: 20 ° C, 65%). After that, in each of Examples 1, 2, 3, 4, 5, 6, 7, and Conventional Examples 1 and 2, spray coating is performed by a sprayer. Then, leave it for about 1 to 2 minutes and wipe it off with a dry cloth or whiteboard eraser. ※ Criteria: ○ ・ Good × ・ ・ Poor (colorant spreads)

[0019]

[Effect] Since the present invention is as described above, the effect is that the handwriting and the imprint can be raised as a film state, so that the colorant can be erased neatly without spreading the colorant over a wide area. Will not be erased. Also,
Since the solvent is water, there is no odor and there is no danger of flammability.

[0020]

[Brief description of drawings]

[Figure 1] Enlarged view of handwriting (handwriting) with a marker (whiteboard marker) using ink for writing board

[Fig. 2] Enlarged view of the imprinting mark (imprint) with a marking tool using an organic solvent

[0021]

[Explanation of symbols]

 1: Pigment (colorant) 2: Surfactant 3: Resin, solvent and other ink substances 4: Non-absorption surface (writing and marking object) 5: Organic solvent (castor oil)

Claims (4)

[Claims] 1. A solvent is water, and propylene glycol monomethyl ether, morpholine, sodium tripolyphosphate,
An eraser characterized in that two or more kinds of ammonia can be selected, and an anionic or amphoteric surfactant and a nonionic surfactant having an ethylene oxide addition mole number of 20 mol or more and 100 mol or less. 2. A writing plate ink comprising an organic solvent, a synthetic resin, one or more kinds of surfactants capable of peeling, and a pigment dispersible in the organic solvent. The method of wiping with an ink erasing liquid according to claim 1, wherein the handwriting is formed into a film so that it can be interposed in a wet state between the handwriting and the handwriting. 3. In a printing ink, a stamp base ink, and a red ink that use a colorant that is soluble in an oily solvent, the imprint can be formed as a film because it can be interposed in the wet state between the imprint and the imprint. The method of wiping with an ink erasing liquid according to claim 1. 4. The wiping method according to claim 2, wherein the ejection gas and the ink erasing liquid according to claim 1 are injected into an aerosol container and ejected from an ejection port.