JPS58208353A - Ink eraser - Google Patents

Abstract

PURPOSE:To provide an eraser for a colorless dye/developer system ink, which can erase only handwriting on an eraser-coated surface, by adjusting the viscosity of a soln. to a specified value, said soln. being obtd. by dissolving a nonvolatile desensitizer having a melting point higher than a specified temp. in a solvent having a boiling point lower than a specified value. CONSTITUTION:An ink eraser is obtd. by adjusting the viscosity of a soln. to 10-200cP at 25 deg.C, said soln. being obtd. by dissolving a nonvolatile desensitizer having a m.p. of 60 deg.C or higher such as an N-vinylpyrrolidone/vinyl acetate copolymer or an ethyleneurea/formaldehyde resin, in a solvent having a b.p. of 160 deg.C or lower such as methanol, ethanol or toluene. Since the penetrating rate of this eraser soln. into paper is adequately slow, the solvent is evaporated before the eraser penetrates through the back of paper and the soln. is dried and solidified so that only handwriting on the eraser-coated surface can be erased without erasing handwriting on the back of the paper and on the next paper. Traces of erased handwriting are maintained as such and the erased handwriting does not reappear.

Description

[Detailed description of the invention]

The present invention utilizes a color developer that converts furanolic hydroxyl groups into 1-J', and a colorless electronic developer that develops color with this 1-J' agent.
This article relates to an erasing material for erasing handwriting made with an ink (1-stroke colorless dye, developer-based ink) consisting of a 9H compound (hereinafter referred to as colorless dye) and a solvent that does not inhibit the photochromic reaction. be. Colorless dye Color developer-based dye 1 is based on a color developer (it is colored by a color developer) and contains a colorless dye. It has the advantage of being easily erased by using a polar compound that has a desensitizing agent and a colorless dye base. Regarding the erasing material of the 1゜colorless dye - tinting ~] system, it is thought that the colored J complexes formed by 11 are decomposed by the desensitizing action of polar compounds and become completely colorless. (A patent application has already been filed by the same applicant as the present application (Patent Application Sho! i6155342).
0 ” 0 or more 1 (ka-) + !+ (at 1℃

111 mml-1 (111 mml-1) of steam (111 mml-1) consisting of a solution of a desensitizing diathermal compound of I or more dissolved in a solvent with a boiling point of 160°C or higher) Because we use a solid desensitizing compound at room temperature, which effectively eliminates the in-V, the solvent evaporates and solidifies, eliminating the C-desensitizing effect. After erasing 11 (approximately 3
within minutes) the same fn■? 'Erase im+ and write ili T
o Make sure that your handwriting does not fade or become colorless. However, if you use this erasing material C to erase the b written on both sides of the paper like a notebook, the erasing material will penetrate into the back side and extend to the handwriting on the back side that does not need to be erased. If you erase C, the small part f) may be 1.). There (・The present inventors effectively erased the handwriting with the colorless dye developer system In-1 as described in 1-1). As a result of intensive research aimed at providing a desensitizing erasing material that does not erase or bleed handwriting on two sheets of paper, By adjusting the viscosity of the elimination phase solution to an appropriate level, the rate of solution capture due to solvent volatilization is faster than the rate of penetration of the solution into the back surface.
The present invention was completed by discovering that the object described in 'C1' can be achieved. In other words, the ink erasing material of the present invention is made by dissolving a nonvolatile desensitizer with a melting point of 60°C or higher in a solvent with a boiling point of 160°C or higher! ,
: The viscosity of the solution is 10 to 200 centiboms (CI
IS> Adjust to (2b℃) (there is a change in temperature. ■-C1 is a non-volatile desensitizer that is solid at room temperature as described.
In the present invention, a desensitized bamboo compound with a melting temperature of 60'C or higher can be used. Melting temperature: If the temperature is higher than 60'C, the copper will become difficult to melt due to sunlight, and it will cause scratches.1.
: There is a risk of 71+ erasing your handwriting and damaging it. 1 Also,
The reason for using a non-volatile desensitizer is to prevent the desensitizer from volatilizing over time and being unable to permanently maintain the C erasing effect. /) 1, J, ui 1 small (ze'R, bamboo desensitizer binding (for example, benzogua' J tin (..., 1.228℃), 4.
4 Sulfol bis(are 1 ~ tsuno-lide) (-, p
, 290℃), auric acid (+n, p, ioo℃)
), p no? Minonoapi 11. l-Lido (m, 1.16
4°C), 1 methyl benol N()I-lmethyl>-4-dibericinonomine (m, p, 115), benzacetin (m, ll. 189°0), 4 nodo- ) Shi N-Human II jjil
\Nzen? L toami l” (m, p, 1ri3-C)
, 2.3 Schicht++-2,2 dimethyl 7 benzonononol methyl carbameh (l11.p,
150℃), -, ]lln(lIl,'D, 1
31'(E), shi/'mi/shifu s---/
L/, ) (Tan (+a, p, 92°C), sinonosidine (m, p, 137°C), 4-fur-methylnoenol-1-(IIl, p, 141°C), lactitol °C ), - Notal Bakujinol 1 - Box. 1+,7
3℃), l-1-furazine (In, p, 1!19”℃)
), 4 (Methylsulnone 7Lyl) SunoEnonone 7L: Lido (II, 11, 141°C), 4.4
NOF・Ramethyldiaminosilanylmethane (+1.
13! H1°C), polydirubin 11ridone, polyacetic acid beer, N beer vinyl [-1s1~n-acid-resistant beer coΦ
Combination, ketone resin, A-ribo-N-methylene trifluoride, polyurea formaldehyde resin, polyurea formaldehyde resin, polyurea N
/1.t-Schiff J lylacryltunomide, vinyl acetate
Examples include maleic acid co-merger. Dissolves a small volatile desensitizer like a solid at room temperature.
Urushi can be used as a solvent, but in Komei, it is important to use a volatile solvent with a boiling point of 160℃ or higher. , the desensitizer in solution remains on the erased surface.
Therefore, 1#) will have autograph syndrome.
hru. Examples of solvents include methanol, tanol, butanol, tutanol, 11-nonone, silol, 'J. ' −j le, -t
1,1.1
Trick 1 Col] Tan, Trichlor 1-Chishi-n, Perchlor 1f Ren, Meburu J”f Luke]~n, Medil t?
1 solf, I-f russe [''Tsuru f, Schiff f ruformamide, 2--1 ~ ['')゛■ Bread, cyalin, etc. are used (
Monkey. Konera's bath additives, 1 class I
ru, l-i ru, tsunoton, or combinations thereof 2
Particularly preferred is agent A, which has a strong ability to dissolve handwriting, smoothes the reaction between the ink and the desensitizer, and effectively erases Takeda. When preparing the erasing material 4 by dissolving a solid desensitizer at normal humidity in these solvents, the viscosity of the solution is 10 to 200 cps (25°G). If the viscosity is 10CpS or higher, the erasing agent solution will penetrate the back side of the paper at a slower rate, so it will erase handwriting on the back side, and even erase handwriting on two sheets of paper. 1. On the other hand, erasure (4) If the viscosity of the wave exceeds 200 cps, penetration into the paper becomes difficult, but the speed at which it penetrates into the handwriting decreases. (The solvent in the solution evaporates and the desensitizer solidifies, making it impossible to erase the handwriting after 1 minute.) The viscosity of the eraser solution can be adjusted by adjusting the added layer of a volatile desensitizer, or by adding a polymer desensitizer (preferably molecular chain 100
Use 0 or more [) in combination with a low-molecular desensitizer with a strong desensitizing effect/J
Droplets can be used, but molecular compounds such as human 04
1 [1 Pill Hill 1-1-su, Polyvir I Chiral,
Polymer-Borihinylpi[Jridone, acid-resistant butyric acid leech[1-
S, 11 Ren acetic acid heel J (Additional layer of polymer 61
It is preferable to treat people with slime pox, if necessary (, hydrogenated Himashiura, dibenzylidene\Norji1).
・It is recommended to use a thickening agent such as chlorine, metal seracun, etc. Using Kayo-Una Eraser 44 solution (colorless dye colorant type f
Erasing the handwriting made with Pen 1, press [Publish the eraser solution on the handwriting 1]
Fill a container for a writing instrument such as a pen (,7) and use it.
0°C
Dissolve the light quenching solvent at a temperature of 1°C or less and add the solution to 10
Since the pressure was adjusted to ~200 cps, the penetration of this erasing agent solution into the set was quite slow, so the solvent evaporated before the erasing agent penetrated to the back side (the 'lf solution Dry 1b1, apply eraser without erasing the handwriting on the back side and the paper surface of 2 sheets 1:), and only the handwriting in the direction of lJ is erased. (■ It doesn't work (Naruno(・, Ftr for this erasure 44 application)
) L: Colorless dye, color developer system (it is impossible to write it down in your own handwriting and make it colorless again). Since we use objects, the erased marks will remain stable and will not become multi-colored. The present invention will be explained in detail below with reference to some examples. NaJ
In the i embodiment, the portion between φ is made smaller between the U portion 1 and the lock 41. Implementation pA1゜ (Preparation of colorless dye developer system In 1) p Nornol Nornol [Developer] 3 parts - No 1 Nol resin I Hytanol #15011 (manufactured by 1-1 Ya Kasei ■) [
Color developer] 2 parts Ristal Violet Raku 1
～N [Mumura dyeing method] 1.5 parts cyclohexylbenzene (solvent 3 2, 5 Qll
” ingredients were mixed and stirred at 1°C for 30 minutes to obtain a flesh colored ink. This ink was used in a ballpoint pen (JIs
F type for s 6039
, . [Preparation of erasing material] N Vinyl vinyl 1-1 lydone Diyl acetate
Near > C desensitizer) 7.5 parts 1 tethanol [solvent]
87.5 parts Polymer Todoro Poly Jiichi Ruby 11 Lidon (
Average molecular weight 36) [Viscous tone jIi) agent] 0.-.83
Part 1 - Combine each ingredient and stir at 0'C for 01 hours, and add various ingredients. I got J-mu material. Pour this into the oil-sealed marker.
'10) Fill the parts and erase the shell! JL, 11 (N1) The handwriting of the ballpoint pen was tested 2 to 31 times (ξ). ) on both the front and back sides of the ballpoint pen (written with 4 erasable handwritings on the surface. Erasability of the handwriting on the back side of the tassel was also investigated. Shown in the front of Binding 1. Erasing Bamboo F Nijin] History 1- Viscosity 1 Decay **--m=〇 Part 8,
b c p s violation Yes 0, j)
10 If
beginning and <t L71:2 22
Ill None 3 3
8 Invasion II
L. 5 8 () II Bug 7, Ri 200 Good I book Shi 8 23b Bad None L? ) :): The handwriting is slightly smeared on the culm 1. i (
A-) 1゜1; 4; Measuring viscosity 1 (, 1, 1 volume 1-type viscosity al (manufactured by Tokyo Sho Ipeng), 11-ter stray electricity 10r, p, s+, From this result, it is understood that if the viscosity of the erasing material is in the range of 10 to 200 cps, handwriting can be effectively erased, but erasing of handwriting on the back side can be prevented. However, the erased marks did not recover color even after a week, and even after 90 seconds of erasing, I wrote with the same precious ink ballpoint pen in the erasing direction, and all of them were clearly written. 1゜Example 2゜N Acid-resistant heel copolymer (3-nia) (desensitizer) 15 parts -1 tanol (
Solvent) 85) Part 1 - Mixing the named components - (Stirring at 50°C for 1 hour, yielding 44 ink interim erasers. Addition of a desensitizer to the erasing material of Example 1 in comparison with this solution iJ) - Increase the viscosity.
Add each of the 4 depressants! 'iJM='b22cI)S (2
The temperature was 5°C). . Put this erase + 4 into the 72'l+J box and put it in a small amount. Example 1 Using the blue-in-one hole pen made by C, lightly erase the old handwriting inside the notebook. However, it was completely erased, but when I re-wrote it again after 2 minutes, I could clearly see the argument (-
Sata. In addition, the handwriting on the back of the notebook m1 (,1) The culm has a few spots that are slightly blurred here and there (・It disappears is 41
9, Example 3 Phthalic acid Schiffl (desensitizer)
T! 1) [Polymer desensitizer] 10 parts Torudone (solvent)
Part 70 I-R [! The 8 components were mixed at 70°C for 1 time, and the viscosity was 35.4CpS.
(25° C.) Ink eraser A was obtained. This erasing material was filled into parts of an oil-attached marker (M-, 10 made by Ru ■), and the eraser was made of bamboo.
・I completely erased the handwriting written on both sides by υ three times (-S, 1 minute later) The handwriting on the back of the notebook is slightly smeared and will not disappear.Example 4 Preparation] l) Cresol Novontsk resin [Color correcting agent] 30 parts 4.4' Methylenebisnor 1-nol (Coloring agent) 10 parts 2//-Rif-3-Mefl 6-P1] Rizinonol Aran [Colorless dye 〕 Part 10 Hensyl Al〔
Solvent] 30 parts methylnonotaline [Solvent]
10 parts 1 - Mix the registered components () (1 (1 (1 “(';
L, 2 (heated for 111!i, melting mouth closed),
(11 Too much insoluble material was removed, and a black color was formed.
N1 to 4! , j /= t + this in% ballpoint pen (
J I S S 6 (Filled into 139H180 fine print (-type), paper (,) Is I) 3201 writing paper A) Divining lines /, = However, like normal Paul Ben ink, H'J et al. Crab writing rs, one clear black brush line
16re Iko. This brush line will not fade even after 3 months. [Preparation of Elimination H] L tyrene urinary acid - small 11 alf human resin (desensitizer)
1081i 1f of citrate [solvent] 85 parts of acetic acid butyrate (L) -su [viscosity modifier] 5 parts - Mix each component in 1 and heat to 70°C.
111. The viscosity was 57.5 cps (
25° C.) was obtained. Create an eraser by filling the parts of an oil-based marker (M-10 made by Pentel) with this eraser, and use the black ink ballpoint pen mentioned above (No. When I rubbed it, it was completely erased, and after 1 minute I erased it with 1 fil of black ink: 1 ballpoint pen and wrote it again, and it was written clearly. It remained unchanged and did not disappear.
zG +li)flit Ill h 74112
Month 2711+jl h'l I! Director: Kazuto Ayosugi, Tono 1, Elementary School 1'1, Hand of Showa 5711 Special A+4, Application No. 91106. Komah°1 Applicant 1] Place Nakagurumabu Chuo I81” Motohashi Kokinumachi 7 No. 2 Yumi? , name (巳) 5) 1) BeΔ, (ru-ha) (kai? I4, dai lko person 〒10/II (￥1) (Kano (+4)
jr science 1 1tll look 11 noill (1,1,#
+ 2 yen,) telephone medium and small (number 13 (! 'i4.') (User゛; II Lu (representative) b, 111 id (0) Contents (1) 1 of the 1st line of page 3 of the specification (Patent application 15534/1982)
2) 2 is amended to ``(Japanese Patent Application No. 57-11999) j. (2) Page 15, 3rd to 4th tr.
J (s, p, 100°C), delete J. (3) Douyuu page 5, lines 5-7, “1-medyruN-furyl-N()Iylmethyl)-4-piperidiamine (m,
p, 115°C〉,” can be deleted. (4) "Codon J" on page 5, line 11 of the same book is corrected to "11-in2." (5) "4-FJ Nylmethylphenolcarbamate Nylmethylphenol) /J Rubamate" on page 5, line 14 of the same book Please amend J. (6) Same)! Delete 1 Rudoflazine (m, p, 159°C) in [], page 15, lines 16-17. After L

Claims (1)

[Claims] 1. Add a small volatile bamboo desensitizer to a melting point of 60' to a boiling point of 16'.
Stones in a solution dissolved in a solvent below 0℃ 10・-20
OL: N-f point: (2巳)℃) +: m 1
lil L, (Narurun1 erasing material. 2. Addition of a compound to the above solution to adjust the viscosity. 2. Addition of a compound to the above solution to adjust the viscosity. 11.) /, Z Ih n Claims In1-Elimination 44 as described in Section 1. 3. It is a polymeric 1' sensitizing agent that has a viscosity-enhancing effect, including at least two types of the above-mentioned 11 viscosity desensitizers, and this molecular desensitizer can increase the viscosity Adjustment (i becomes 1.:
fN erasure U according to claim 1. 4. The above-mentioned solvents include solvents such as alcohols, sulfurs, lydones, and mixed solvents thereof.
The first term of the 6-eight search range is [ ], and the number is 1, and the number is 4.
,2