TW294703B - - Google Patents

Description

A6 B6 294703 V. Description of the invention (1 The present invention provides an ink composition that forms erasable sassafras, especially pseudo-transparent and colored marks. The present invention relates to a writing instrument that can pass through permeable classes or through various types Erasable markers or writing media or ink scattered by the atom. Marks produced by medium coating can be removed using non-abrasive pens such as general pencil scrubbing. When people produce drawings, characters or marks with writing utensils When you do not need to achieve a highly difficult to erase effect. For example, someone wants a writing medium that can be easily erased from the writing surface using a mechanical appliance, that is, an ink that can be erased. The ink is removed before it can be erased It must be able to remove the surface without breaking, such as abrasion of the writing surface. Because the most commonly used writing surface is paper, the study of the characteristics and composition of the paper helps to understand the present invention. The paper is mainly a randomly distributed cellulose Ewei gasket. Due to the randomly oriented green, there are many gaps between randomly oriented cellulose fibers on the surface of the paper. In terms of truly erasable ink, at least the ink part containing the light effect part (such as cinder) must be suppressed from penetrating into any angle of the pores. Otherwise, it is difficult to wear and tear without forming the writing table In some cases, remove the mark. Therefore, you must provide an ink that will not be absorbed by the writing surface, that is, the paper, but can be used for pens with penetrability. The ink should prevent drying at the pen end, but can be applied It dries quickly when it is applied to the writing surface. During reflection, the ink flowing through the pen tip is indelibly drawn into the paper and is difficult to reach. Generally, in order for the ink to pass through the pen tip effectively , The ink must have a very low surface tension, low viscosity, and the particles in the ink must be quite small. However, this persistence will result in-3-82.6. 40,000 (please read the notes on the back of Jfi before filling this page ) Order. • Printed A6 B6 294703 by the Central Standards Bureau, Industrial and Consumer Cooperatives V. Invention description (2) (Please read the precautions on the back before writing this page) Make the ink fall into the paper. In addition, the ink composition must be fairly stable under a wide range of conditions to provide a practical shelf life. Therefore, the ink that can flow through the pen-permeable pen tip is likely to be non-erasable, and the erasable ink may not pass Permeable pen tip and shelving life difference. The above-mentioned problems of the prior art can be eliminated by the method of the present invention. Therefore, the main purpose of the present invention is to provide a marking composition that can effectively pass through the pen pen tip of the pen. Another object is to provide a marking composition that can be effectively applied by various types of ball pens. Another object of the present invention is to provide a plant that can form a traditional (opaque) mark or a highlight type (colored but transparent) mark Marking composition, which can be easily and completely erased by traditional pen erasing. Another object of the present invention is to provide a marking composition that exhibits a high degree of stability under normal storage conditions. Economy, βι Central Bureau of Standards, 3 Industrial and Consumer Cooperatives Printing 3 < The medium or ink described in the present invention consists of a non-continuous mineral phase composed of rubber, a rapid mineral phase of water, and a colorant linked to rubber_ The emulsion. Selecting the proper ratio of rubber to pigment and rubber to the continuous phase can produce an ink composition that forms a color replacement layer on the writing surface, the layer does not penetrate into the pores of writing sheets such as stationary paper, and the The layer can still be easily wiped off the writing surface after an indefinite period of time. The composition of the present invention relates to the use of a pigment dispersion liquid, such as hydrophobic, lipophilic pigments, dyes, or toners. In addition, the emulsion incorporated into the erasable ink composition allows the ink to be easily erased after being applied, but it adheres to the paper and does not break or chip even if the paper is bent or folded. 4-82.6. The standard of 40,000 pieces of paper is applicable to the Chinese National Standard (CNS) A4 specifications (210 X 297 g;). Printed by the Central Standard Resident Employee Consumer Cooperative of the Ministry of Development Α6 Β6 V. Invention description (3) Phenomenon. Other components such as plasticizers, surface tension reducers, and anti-drying agents (anti-gasification agents and wetting agents) can also be incorporated into the composition of the present invention. The marking composition is designed as a stable emulsion, except when deposited on the surface of traditional fixed paper. The paper is generally treated with acidic and water-soluble polyvalent cations, especially pseudo-calcium, magnesium, and aluminum. The marking composition of the present invention is made so that the normally stable emulsion becomes unstable and the rubber agglomerates come into contact with the surface of the paper. In more detail, the unsteadiness is caused by the surface treatment components generally present on fixed paper. Preferably, the instability is caused by a soap surfactant, which will stabilize the rubber phase particles in an alkaline (P Η value> 7) aqueous medium. The contact of the emulsion with the paper makes the medium more acidic and dissolves the multivalent cations away from the paper. This act deactivates the soap and the active agent, because the carboxylic acid end of the soap becomes an insoluble salt. The rubber particles decompose from the emulsion. Since the glass transition temperature of the rubber is lower than room temperature, the particles coalesce to form a film. Because the film and its coloring agent adhere to the surface of the paper with minimal adhesion, the film and the coloring agent can be easily and completely wiped off. The special features of the present invention will be described below with reference to one of the structural aspects shown in the drawings. The erasable writing medium composition of the present invention is composed of an emulsion containing a pigment and other components mentioned in this document. The typical operation of the present invention is shown in circles 1-4. In the first figure, a marker button coded as 10 is applied from the pen tip 11 of the pen 12 of the pen tip to the writing surface 13 of the paper 14. As permeable pen-end marking technology is used, the marking composition will be stored in the storage at the top of the pen end -5- this paper ruler and the Chinese National Standard (CNS) A 4 specifications (210 X 297 mm) 82.6. 40,000 ( Please read the precautions on the back before writing this page)-Binding. Order. Printed by the Central Standards Bureau of the Ministry of Economic Affairs, 8 Industrial and Consumer Cooperatives, 52 A6 B6 5. Description of the invention (4) Slot 2 0. When the knee pen tip 1 1 contacts the appropriate writing surface 13, as shown in FIG. 1, the composition will flow out through the pen pen tip 11, and the marking composition is coated with a ribbon 15 in a non-dry emulsion state Coating form. Figure 2 shows the ribbon 15 that has been applied to the writing surface 13 of the paper 14 but the continuous phase 16 has not been removed from the non-continuous phase 17 containing the pigment 18. At this time, the continuous phase 16 quickly converts the protons (HO (acidic) and polyvalent cations (calcium, Ca + +, SM, Mg + +, and / or aluminum, A 1 + + + ) Dissolve. In this way, the emulsion is cracked, and the non-continuous phase 17 coalesces to form a film 21. Furthermore, even the inlaid mandarin 16 is absorbed into the paper 14. The instantaneous instability of the emulsion and the coalescence of colored particles become rubber, adhesion The mechanism of the film is believed to be related to the surfactant used to stabilize the latex used to prepare the ink. Preferably, the surfactant is an amphiphilic soap molecule, especially a sodium salt of carboxylic acid. The surfactant is used in emulsion The pH value exceeds 9.5. When the pH value of the emulsion drops (becomes more acidic) and when polyvalent cations are pseudo-added to the emulsion, the surfactant becomes ineffective as the emulsion contacts the surface of the paper preparation. The generated carboxylic acid salt is water-insoluble and the hydrophilicity of the molecule is lost. The effect of this ink settling on the paper occurs almost instantaneously and is very obvious. Figure 3 shows the color rubber film formed as the diko phase 16 2 1 Borrow citrus 16 Inhale paper and / or evaporate The non-continuous phase 1 7 is separated. As shown in the third picture, the color film does not penetrate into the paper, but only sticks to the protruding part of the surface of the paper. In this case, the colored film 2 1 is under normal circumstances It is attached to the paper but does not penetrate the paper body. Figure 4 shows the application of a standard pencil wipe 2 5 to -6 at the end of the pencil 2 6-This paper scale applies the Chinese National Standard (CNS) A 4 specification (210 X 297 Mm) 82.6 · 40,000 • -------------- * I ^ ------- installed ------ ordered (please read the notes on the back first, s then (Write this page) A6 294703 _B6_ V. Description of the invention (5) The shape of the crimson film 2 1. As shown in the figure, the shearing force of the pen 25 causes the coloring film to escape from the high point of the writing surface and equivalent Consistent quality or uniform quality is erased. Because the color film 21 is adhesive, it will not smudge the paper and leave the paper in a large shape, and can be easily erased from the writing surface without leaving any Afterimages or migration of pigments to the surface of the paper 13. The emulsion is visibly shading such as fluidity, stability and erasability, so it is the writing medium group of the present invention According to the present invention, an emulsion is a rubber latex. It is diluted with about 30 to 96% by weight of water in the final ink. There are several types of rubber latex, especially styrene-butadiene ( SBR) latex, rubber rubber latex must be selected with an expectation that the ink has the desired hospitality. Because the hospitality of the emulsion cannot be accurately measured only based on the composition of the emulsion, and because the mutual and cooperative use of various components is still not known in detail, so Some tests are required to select and formulate the rubber emulsion suitable for the present invention. It is generally believed that the emulsion splitting effect of the present invention does not depend on the rubber. Therefore, formulators have considerable freedom in considering the choice of their rubber components. An important factor in the selection of effective rubber for emulsions is the glass transition temperature (T g) of rubber. This parameter provides the convenience index of the critical room temperature standby of rubber. Excessively high glass transition temperature may indicate that the rubber is too hard and brittle and has poor effect on the effective marking film adhering to the paper. On the other hand, a glass transition temperature that is too low may indicate that the rubber can be rubbed into the paper and excessively viscous to cause agglomeration. It should be noted that Tg does not need to be used to define this waiting property, and the wedge number, molecular weight, and viscoelastic flow characteristics of D a 1 g u i s t are very important for the optimization of the product. When applied to the present invention, the emulsion should have some of the characteristics described in this article and -7- This paper scale is applicable to the Chinese National Standard (CNS) A 4 specifications (210 X 297 mm) --------- ------ · 1 One ------ installed ------ ordered (please read the precautions on the back before writing the clothing page) Printed by the Staff Consumer Cooperative of the China Bureau of Standards, Ministry of Economic Affairs " 82.6 . 40,000 The Ministry of Central Standards Bureau, Ministry of Industry and Commerce, 3 Industrial and Consumer Cooperatives printed K A6 B6. V. Description of invention (6) Parameters. The preferred emulsion is your non-carboxylated styrene-butadiene latex. The room temperature viscosity of the styrene-butadiene ink of the present invention should be in the range of about 1 cps to 35 cps, preferably about 5 cps to 1 cps, especially about 7 cps. High-viscosity emulsions have improper fluidity as a writing medium. Although the emulsion with too low viscosity has better flow characteristics, it will excessively penetrate into the paper fibers and negatively affect the erasability of the ink composition. Therefore, the viscosity of the emulsion used for the pen at the standard end should be no less than about 35 cps. The rubber emulsion used in the present invention should exhibit "low adhesion" to the writing surface when the paper surface is dry. The so-called "low adhesion" means that the dried emulsion can be erased from a writing surface such as paper with a low-abrasion pen such as an ordinary pencil wipe without causing breakage to a greater extent than the scratch caused by the pencil mark By. Therefore, the emulsion should have a greater adhesion than the writing surface after drying (the moisture is evaporated and absorbed in the paper). When the emulsion is applied to the writing surface, an adhesive film should be formed on the surface in about 20 seconds. Emulsion (especially after pseudo-drying) can be partially measured by the ratio of the number of styrene units in the copolymer chain to the number of butadiene units. The styrene-butadiene ratio of the present invention should be in the range of about 20:80 to 5 5:45. The preferable ratio of styrene-butadiene is approximately 20:80 to 4 5:55, and the ratio of 2 4: 7 6 is most preferable. If the styrene-butadiene ratio is higher than 5 5: 4 5, the ink composition is likely to become brittle after drying, resulting in dry cracking and embrittlement of the ink that has been applied to the writing surface. Therefore, the ratio of styrene-butadiene should not exceed 55:45. When selecting or formulating the emulsion used in the ink composition of the present invention, the emulsion should have a surface tension lower than the critical surface of the inner surface of the pen end, and the tension is lower. -8-This paper scale is applicable to the Chinese National Standard (CMS) A4 specification ( 210 X 297 mm) 82.6. 40,000 (please read the precautions on the back before writing this page) — Pack. Order _ A6 B6__ 5. Description of the invention (7) Make the composition penetrate into the standard "shrink pen end" pen The ability to penetrate the pen end becomes the highest. In general, when applied to conventional acrylic pads or polyester shrink-ends, the acceptable range of surface tension of the ink of the present invention is between 10 and 60 factors. 5 至 35 至 35 因 因 / cm is preferable, especially 29.5. It is generally believed that the amount and type of emulsifier used to stabilize latex may cause the surface tension of the emulsion to become higher. Therefore, the type and amount of wetting agent should be adjusted to provide the required low surface tension without adding an emulsifier to negate the emulsion cracking effect that is very important to the present invention. If the surface of the fleece pen is increased by plasma treatment of the inner surface of the pen end or heating the pen end, the ink with higher surface tension can be used. It is preferable that the emulsion is slightly adhesive after drying to facilitate adhesion to, for example, a rubber wipe during the erasing process. If the emulsion is too adhesive after drying, the paper may stick together. The emulsion should also have " freeze-melt " stability and is not easily degraded under long-term storage. The pH value of the ink is generally in the range of about 9 to 14. Those outside this pH range may produce pre-use stability or coloring The composition that cannot be dispersed is not suitable for use. The most desirable styrene-butadiene emulsion is "P 1 i ο 1 ite LPF 2 1 0 8" produced by G 〇dyear Tire and Rubber Factory in Akron, Ohio or The “Bututna 1 NS 1 0 3” produced by BASF Corporation is printed by the Xiaogong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. The compound is a styrene-butadiene ratio of 2 4: 7 6 and a solid content of about 4 Q. 0% by weight, non-carboxylated styrene-butadiene latex with a P H value of about 1L4 and a surface tension of about 58 dynes / cm. The coloring agent or pigment pseudo-lipophilicity in the erasable ink composition of the present invention Water-dispersible pigment. The pigment is selected from the appropriate industrial customary 82.6. 40,000 (please read the precautions on the back and then two pages) This paper is applicable to China National Standard (CNS) A 4 specifications (210 X 297 mm ) 294703 A6 B6 V. Description of the invention (8) Ministry of Economic Affairs Printed by the Central Bureau of Standards WC Industrial and Consumer Cooperatives ~ in the picture of unsuitable sulphate and so on. 10 water. 0 will be used as a real body. Including _. An'an Zhang see gap ΜΜH 70 will be the end The benzene il is the paper that contains the phases in this book. It can be empty, W, W, photon, depolymerization, and 7T1. The phase material is successful, and it is as good as Zhang U. When the h period is caused by a crack or U is used to make water The paper s ° between the various forms in the Yangu group is pre-medified by the solution of this paper. It is determined by the choice of this powder. The water is in the upper dimension. Ink is used to improve the effectiveness of the fiber. This life theory is enough to make the C of the creed paper divided by 50 in the application paper, so that the f5D phase can be processed as it is, and the penetrating agent can go to the paper. The material Μ is heavy, and it penetrates from the general infiltration into the first color milk or or 10% Ξ enough to be the original infiltration. Choose U. One phase can be mixed and mixed before use. .Zhang Zhi. ⑼. The paper with its good quality is hungry and the big U is bound to be reduced. The ift-type rubber is introduced and the middle is set to be included in Zhang Hui ’s Mingzi. It disappears in 1 The system is similar to the document writing and other components, but the paper penetration is not limited. Sub-structure _ 糸 1 It is not suitable for book dyeing agent, it is not included in the book, but the total amount is / B. For the granulator water Θ Yan Jieran and the color ink before and without water seepage are also relatively fine. π sex dense display is adjusted to add liquid to make liquid ink into small diameter and square diameter. It can be used as a small circle. 1 Water tight material wipes the face and adds milk. The light material can be added to the small glue of Yan You wipe the water and the film can be left clearly. The fluorescent dye is divergent, and Mozi should be stopped. Rubber W body, gum hair, uptake details-the agent does not hinder the reserve of the granules over time. J Honma Rubber Products ^ The whole paper has a slight color. Should the fabric be able to handle liquids? Zhang Shuanran produces 4 tables and enters this super Yanzhi liquid material table. This is the best way to learn milk 0.0 paper at the end. Although the Γ- writing material can be written on the top and floating on the face. Such as materialization (0 into the continuation of the standard-T book face will be suspended like a black. The book image, the ooze of the face of the grain (please read the precautions on the back and then write this page) 丨 Install. Order. This The paper scale is applicable to the Chinese National Standard (CNS) A4 specifications (210 X 297 mm) 82.6 · 40,000 V. Description of the invention (9) A6 B6 The Monthly Industry and Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs has printed an immaterial purpose. The following is the inventor of this case A comprehensive description of the concept of the operating mechanism. When the pigment of the present invention is dispersed in the emulsion of the present invention, it is believed that all pigments migrate to the rubber phase and remain attached to the phase. This may be due to the small particles The surface is lipophilic and hydrophobic. When the low-viscosity emulsion of the invention is placed on a paper surface, the aqueous entangled phase dissolves the protons and multivalent cations of the paper surface preparation components. This lowers the pH of the emulsion and advances Other emulsifiers or soap surfactant emulsifiers deactivated by acid and / or polyvalent cations in the stabilized emulsion are deactivated. This is due to the formation of non-valent cations and carboxylic acid (or other) anions on the particle surface. Water-soluble and / or non-chargeable salt. This action leads to the disintegration of the rubber dispersion. Proper selection of Tg can make it melt into the rubber film. At the same time, the high absorbency of the paper quickly draws the continuous aqueous phase without pigments out of the emulsion and Enter the surface of the paper. The non-continuous rubber phase (containing or absorbing the pigment, or absorbing the pigment on its surface) is cracked and incorporated into the thin layer of continuous adhesive rubber attached to the surface of the paper but not absorbed by the paper. The pigment mark is recorded on the surface of the paper, but only adheres to the surface of the paper. The layer is only slightly attached to the surface of the paper, and the layer and part of the pigment can be erased by physical erasing. So it is only left after being removed Part of the paper is as if it is unmarked. In one preferred embodiment of the present invention, an anti-drying agent (wetting agent) can be used to prevent the drying of the emulsion when the water in the pen tip is evaporated, in order to prevent long-term failure The marker composition in the pen can still flow smoothly after use. Suitable anti-drying agents include water-soluble organic ketones and esters that do not cause significant degradation of the composition or its characteristics and have a boiling point of about 300C. And alcohol. Specific compounds suitable for use as anti-drying agents include 2-octanone, 5-methyl-2-hexanone, cellulose -1 1-(please first «read the notes on the back and write this page) _ Binding · Order-This paper scale is applicable to the Chinese National Standard (CNS) A4 specifications (210 X 297 mm) 82.6. 40,000 Printed by the WeCong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A6 B6___ 5. Description of invention (10) acid ester, Glycerin, glyphosate, propylene glycol, diethylene glycol and butyl osmium (2-butoxyethanol). Among the aforementioned anti-drying agents, sorbitol or butyl oxyvitamin is preferred. Since the anti-drying agent can prevent The drying of the emulsion also helps to diffuse the rubber and pigment on the paper, and allows the rubber and pigment to penetrate into the fibers such as paper. Therefore, the concentration of the anti-drying agent must be controlled to a minimum, in most cases, the flag of the anti-drying agent is not suitable More than 15% by weight of the total composition of the erasable writing medium. The erasable writing medium composition of the present invention may optionally contain a plasticizer to increase the adhesiveness of the composition and slow down the film forming process, and extend the erasable time. As mentioned earlier, if the ink composition is slightly tacky, it will be more easily wiped off and stick to the pen. The plasticizer can improve the adhesiveness of the composition, so it provides a composition that is easier to erase using ordinary non-abrasive pens. Any plasticizer compatible with the composition of the present invention can be used. The preferred plasticizer is Benzoflex 9-8 8 dipropylene glycol dibenzoate produced by Velsicol Chemical Company of Chattanooga, Tennessee. Another preferred plasticizer is the "Santicizer 8" produced by Monsanto Industrial Chemical Company of St. Louis, Mo. "Santicizer" is like a mixture of N-ethyl-o-toluenesulfonamide and N-ethyl-p-toluenesulfonamide. The composition of the present invention can be applied to the pen at the first end of the fiber. This type of pen usually covers the body of the porosity and fleece of synthetic Ewei in the pen barrel. A wide flat pen end extends from the pen barrel. The body part is filled with the ink of the present invention. When the pen tip moves against the surface of the paper, a long strip of emulsion will be applied to the surface of the paper. When the moisture in the emulsion is absorbed by the surface of the paper, the non-Burmese rubber mandarin containing the pigment will be combined and applied on the paper table " 12- The paper standard is the national standard (CNS) A 4 specification (210 X 297 Mm) 82.6. 40,000 (please read the precautions on the back before writing the tile). Installed. Ordered 294703 A6 Printed 1i B6 by the Industrial and Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. 5. Description of Invention (U) The colored rubber layer in. This layer may be transparent but colored for marking purposes, or it may be opaque and black, or opaque and colored for traditional marking or writing purposes. Regardless of the occasion, this layer can be wiped off and all visible marking ink removed. _ Example 1 Erasable Mark-Black X 1 188- 6 9-1 Ingredients: (TNV) dry weight wet reset% (lbs) (lbs) pigment suspension: (Flexiverse Black (4 6 ..0 ) 1.6 7 3.6 3 LFD 4343) Steaming water--10.00 Surfactant: (Fluorad FC-129) (50.0) 1.59 3.18 Latex: (Pliolite LPF 2108) (40.5) 24.44 60.35 Distilled water--10.00 Wetting agent: ( Sorbitol 70¾) (70) 4.45 6.36 Distilled water--6.48 Total: 32.15 100.00 Specification:

Vise @ 60RPM 7 · 0 ± 0.5 cps Surface tension _ 29.5 ± 0.5 dynes / cm T.N.V. refers to the total amount of non-volatile substances. -1 3- This paper scale is applicable to China National Standard (CNS) A 4 specifications (210 X 297 mm) 82.6. 40,000 .— I .----: ---.------- 1! ------ Installed ------, ΤΓ ----- Η (Please read the precautions on the back before writing this page) A6 B6 printed by the employee cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Description of the invention (12) Description: 1. Add Flex i verse to a clean stainless net or glass-lined container. 2. Set the Lightning type mixer to slow to moderate speed and add 10. Q lbs of distilled water. Hold mixed. 3. Under moderate to high speed stirring, add Fluorad FC 129 and hold ore to mix at medium to high speed until all Fluorad is fully incorporated into Flexiverse. Slow down to low to medium speed and continue to mix. 4. In another clean stainless steel or glass-lined container, weigh in Pliolite, turn the stirrer to low to medium speed, and add 10 lbs. Of distilled water. Continue to search and mix until uniform. 5. Add the diluted P 1 i ο 1 i t e to the F 1 β X i v e r s β container under moderate stirring speed. Continue to search and mix until uniform. 6. In a F 1 e X i v e r s e container with moderate agitation speed, add sorbitol sugar fermentation and ore holding and mixing. 7. Use the remaining distilled water to make the viscosity 7.0 ± 0.5 cps 0 60 RPM. The resulting composition is placed in a pen at the end of a standard felting pen. The mark applied to the standard stationery paper is exactly the same as the mark made by the standard pen. However, the mark can be easily wiped off with a normal pencil eraser, leaving no trace. Example 2 -14- This paper scale is applicable to China National Standard (CNS) A 4 specifications (210 X 297 public goods) 82.6- 40,000-------: ------------- 「------- 装 ------. 玎 ----- (please read the precautions on the back first and then fill in this page) V. Description of the invention (13) black ink that can be corrected X1188- 92-1 Dry weight M Wet weight% F 1 e X i ν erse Black LFD 4 3 4 3 1.92 4.17 Goodyear SBR rubber latex 2 108 28.14 69.48 F 1 uorad FC- 129 1.10 2.20 Sorbitol 70% 5.12 7.31 Octolite 45 3 .1 7 .31 Demineralized water-16.53 Total 100.00 Viscosity-l) L e 60 RPM 7 · 5 +/- .5 CPS Surface tension 2 6-2 9 dynes / cm This formulation is based on Example 1 The same way to prepare and obtain excellent erasable black marks. The present invention has many other purposes. The Central Consumers ’Bureau of the Ministry of Economic Affairs, Employee Consumer Cooperative Printed M can be set with a vinyl or rubber pen eraser on the pen end to erase purlins. This type of pen mark is not composed of any specific materials. Most conventional pen erasers have very good performance. Colorant characteristics: currently used for the development of black ink The color shaving is LPF 4343 Flexiverse Black produced by Sun Chemical. It contains non-ionic surfactants, Joncry 68 (a kind of _ soluble acrylic material), bactericide, and black. Oil-soluble dyes have also been effectively used, But -15- 82.6. 40,000 (please read the precautions before writing this page) This paper scale is applicable to the Chinese National Standard (CNS) A 4 specifications (210 X 297 mm) A7 B7 5. Description of the invention (14 ) It is not easy to disperse the coloring pigment in the composition. Because the aqueous pigment dispersion is easily available on the market, the stability of the ink composition using the pigment is better. The present invention includes the fluorescent coloring agent dissolved in the aqueous composition (Dye and color agent) dispersion / emulsion. Generally speaking, the present invention includes the use of the novel small particle size emulsion and dispersion, because it is not suitable for erasable writing methods. One of the effective methods is to use ink made by Japan Dian Co., Ltd. as coloring .. Resin emulsion: The following emulsions have tried to use Sun Chemical's Flexivers 4343 black dispersion liquid. The general chemical formula is pseudo 10% Flexiverse Black pigment dispersion, 50% resin emulsion. 4 090 water (by volume). The S / B ratio represents the ratio of the number of styrene (S) and butadiene (B) units in the S / B copolymer chain. (Please read the precautions on the back and then fill out this page) *? Τ Printed by the Ministry of Economic Affairs, Central Bureau of Standards and Staff's Consumer Cooperative Du Printing 0 = not erasable, 5 = completely erasable resin solid Tg s / B ratio erasable Union 9 4 8 2 5196--2.0 Union 94 8 3 5 296--1.5 Smudge Unocal 4100 5 096 -10 57/43 0-. 5 Unocal 4 106 5 096 + 76 90/10 0-. 5 Unocal 4 150 5 096 -16 55/45 1. 0 Unocal 4125 5 096 -32 45/55 2. 5 Unocal 4176 5 096 -21 50/50 2.5 Unocal 9410 5 096 -61 25/75 1. 5 Gd rch V-43 5 096 -43 Non-SBr 2.5 G ο odyr 2108 3 996 -49 24/76 4.5 .5 G ο odyr 5 3 5 6 5 9 96 -5 1 24/76 4.5 -1 6 _ This paper size is subject to Chinese national standards ( CMS) A4 specification (21〇 '297 mm) Α7 Β7 η Employee's consumption cooperation of the Central Standards Bureau of the Ministry of Economic Affairs. Printed five. Invention description (15)

Goodyear resin LPF 2108 is a non-carboxylated styrene-butadiene resin with a pseudo particle size of about 700 Angstroms (0.07 microns) (1 micron = 10,000 Angstroms). Goodyear LPF 5356 resin is a gel of LPF 2108 resin, so the particle size range is wide, and most of them exceed Angstrom. The comparison between 5356 and the near-translucent 210 8 resin shows that the holding capacity of the milky high solid plaque is fair. Due to the relatively large particle size (0.08 to 2 meters) of Miu Ning 5356, this composition is not easily diluted with water. If the 535 6 resin is used as the substitute for the 210 8 resin, the resulting ink will settle down after a few days and will settle into several particles. However, this resin is still suitable for the present invention. The present invention shows a major discovery regarding the influence of the glass transition temperature (Tg) (film forming temperature) of rubber on the erasability. In the past, it was believed that the glass transition temperature of rubber used as erasable marks should be above room temperature. It is also believed that harder non-film-forming materials do not penetrate deep into the paper, have poor adhesiveness to the paper, and produce flakes more cleanly when wiped. The ideal effect of these high Tg does not occur as expected. On the other hand, the present invention also found that rubber with a Tg lower than room temperature (ie -52 · + / -5 t :) unexpectedly exerts better performance. This excellent performance is especially remarkable when combined with the concept of squirting, in which the destabilizing emulsion and paper will break immediately when connected to «5. Low T g allows the finest rubber particles to immediately form a sticky and impermeable membrane on the paper surface. High-rubber films unexpectedly $ will stick to the paper badly. Unexpectedly, the Weng film itself will have a self-clearing effect during the erasure of $ K0, that is, on the film. Any free particles will adsorb the film body formed during the M erasure from the paper fiber. Results ¥ Μ 的 S 豳 Erase area falls cleanly on the paper and becomes a few larger glues-1 7- This paper scale is applicable to Shiguo National Building Falcon (CNS) Α4 specification (2 丨 0X29 * 7mm) (please First "Read the precautions on the back and then fill out this page." Clothing. Order A6 294703 __B6_ 5. Description of the invention (16) (Please read the precautions on the face before writing this page) Sticky block. This self-clearing effect produces clean and non-marked paper surfaces that have been erased. The mechanism of the ink that can be purged: It is composed of 10% Flexiverse 4343 black pigment dispersion, 50% LPF 2108 SBr emulsion, 38% water, and 2% FC 129 surfactant (by volume). When the ink is applied to standard paper, the mark is easily erased. The particle size of this ink is very small (well below 0.5 meters) and the surface tension is lower than 30dynes / c «i. Since the particles in the ink are dispersed and emulsified in water, it is expected that the ink will not be wiped away. The printing of L P F 2 1 0 8 latex by the Central Standard Resident Employee Consumer Cooperative of the Ministry of Economic Affairs is due to the fact that latex emulsions are not ionically stable. Goodyear's LPF 2108 resin and BASF's competitive product Butonal NS 103 are also ionic unstable latexes. The emulsifier used in latex only works when the PH value is greater than 9.5. The surface of most papers is acidic or cationic, and flocculation (latex "cracking") occurs immediately when the latex comes into contact with the paper surface. In addition to the direct anion-cation effect, various multivalent coatings used in the paper industry may also flocculate latex. As a test of surface flocculation theory, we tested the ink with filter paper. The ashless filter paper is generally free of acids and polyvalent cations. When the surface is marked with an erasable ink formulation, the ink completely penetrates the back of the paper and loses its erasability. Carboxylated latex is more ionically stable and conforms to the above theory. It penetrates deeper into ordinary paper than non-carboxylated latex such as LPF 2108. In order for the flocculated ink to form a film on the surface of the paper, the citrus must be quickly removed from the resin. It is most likely to be combined with the paper core (w i c k i n g) effect and the evaporation of water from the paper surface to provide this speed. This drying action may also suddenly concentrate dissolved protons and multivalent cations to enhance thinness. 1 8 _ 82.6. 40,000 The paper size is applicable to China National Standard (CNS) Grade 4 (210 X 297 mm) Ministry of Economic Affairs A6 ____B6__ printed by Mgong Consumer Cooperative of Central Bureau of Standards 5. Description of the invention (17) The action of the film formation. From the above description, the reason why the high surface tension, high adhesiveness, and ion-sensitive 2 10 8 resin can exert such excellent effects in the low-viscosity ink composition can be seen. The above reasons are particularly important because an ink composition surfactant must be used to reduce the overall surface tension of the ink to facilitate the wetting effect of the pen tip. Therefore, it is preferable to use an ink composition surfactant that does not increase the stability of the latex. Adding more rubber emulsifier will make the paper more expensive and the latex will be stabilized. The critical definition of emulsion then becomes a definition of a destabilizing emulsion that can be used as part of a low surface tension ink. Wetting agent: The present invention uses Sorbitol (a "Sorbitol" polyol produced by Wilmington, ICI USA) as the wetting agent of this composition to improve the "Cap Off" performance of the pen. "No cover" is the benchmark for the pen's ability to withstand drying while still maintaining its function. The name of the most effective moisturizer will be listed. Surfactant: As mentioned above, an ink composition surfactant will be used to reduce the surface tension of the ink until the nib is wetted. It is obvious that since the particle size of L P F 2 1 D 8 latex is very small (700 angstroms), a considerable amount of surfactant is required to reduce the surface tension of the composition. Two percent of cyanide-containing compounds are already very high for this highly active agent. The surfactant used is FC129 produced by 3M, a potassium salt of fluorinated alkyl carboxylic acid that is effective for alkaline compositions. Example 3, 0 1-turn 7 X1111- 1 2 2 erasable ink -1 9- The paper size is suitable for the Chinese national standard ¥ 4 specifications (210 X 297 mm> 82.6. 40 000 (please read first (Notes on the back will be written on this page). Binding · Order · A6 _ B6_ printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Invention Description (18) To assess the various concentrations of FC-129, prepare the ink substrate in the following manner: Mix the following for about five minutes: (wet weight)

Flexiverse Black LFD 4 3 4 3 1 Ο. 8 4 g demineralized water 1 8 · 2 Mix the following for about five minutes:

Goodyear SBR rubber latex 2108 180.65 demineralized water 24.7 sorbitol 70% 19 Mix the above mixture for about ten minutes and mix the following for about five minutes: FC-12 9 Surface tension (wet weight%) (dyn / cin) # 1 Ink substrate 19.95 0.25% 4 3.3 FC- 129 0.05 # 2 Ink substrate 19.85 0.75% 34.5 FC-129 0.15 # 3 Ink substrate 19.8 1% 34.5 FC-129 0. 2 # 4 Ink substrate 19.6 1% 28.7 FC-129 0 . 4 # 5 Ink base 19.4 3% 24.5 FC-129 0. 6 ft 6 Ink base 19.2 4¾ 18.4 FC-129 0. 8 Lin 7 Ink base -20- 6 1.5 The paper size and degree apply to China National Standards (CNS) A 4 specifications (210 X 297 public goods) 82.6. 40,000 -------:-· -----, --------- outfit ------ '玎- --- It {((Please read the precautions on the back before writing this page) A6 _B6__ V. Description of the invention (19) (Please read the precautions on the back before writing this page) The above data is shown in Figure 5 The figure shows the shadow W of PC-129 surfactant on the surface tension of the ink W. Low surface tension is the preferred method for the ink to wet the pen point of the pen. Other methods can also be used. Viscosity: The viscosity of the ink should be below 5-10 cps. Antimicrobial or preservatives, fungicides, biocides: although there is no evidence of growth in the Flexiverse ink formulation The present invention suggests that certain anti-biological agents can be suitably used. Anti-foaming agent: Since the preparation of this product must be accompanied by a large number of mixing operations, it is necessary to use traditional anti-foaming agents to reduce the foam generated in the manufacturing process. Chemical agent: LPF 2108 used in this formulation is produced by Goodyear without anti-gasification agent. This emulsion can produce an ink that oxidizes slowly when exposed to air, making the ink lose its erasability. Add anti-air After the chemical agent, the erasability can be improved. Another item of the present invention is to control the non-smearable or erasable time. Depending on the specific application, it may be necessary to combine the ink of the present invention in order to be coated on the paper It is still erasable after a few days or years. It is found that if no anti-gasification agent is added to the ink, it will become non-erasable after a few weeks at normal room temperature. The addition of anti-gasification agent will keep the mark The erasability of the erasability is extended. The employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, Inno, a kind of anti-gasification agent that plays a good role in this composition is "0ctQlite 453" produced and sold by Textile Rubber and Chemical Company, Dalton, GA. . It contains 55% solids and is used up to 3% by weight (based on dry weight) to maintain at least several months of erasability. This product is a 50:50 emulsified blend of two polymeric sterically hindered phenol thioester anti-gasification agents, pseudo-21--82.6. 40.000 This paper scale is applicable to China National Standard (CN'S) A 4 specifications ( 210 X 297 mm) A6 B6 5. Description of the invention (20)

"Wing Stay L" and "Wing Stay SNl" produced and sold by Goodyear Tire and Rubber Company. Ghost image / residue: analysis of the marked residue using a microscope. The residual color of LPF 21〇β resin emulsion and Flexiverse 4343 colorant Or "ghost image" appears on some substrates, which is the resin and colorant trapped in the small stream on the surface of the paper. The residue is not unenclosed colorant. The residue can escape the pen Abrasive resin / colorant matrix. After removing the residue with a needle, no traces are left on the paper. The most effective rubber for the present invention is Goodyear Tire, Houston, Texas, and LPF 2108 produced and sold by Rubber Company. The solid content of this product It is 40¾. Its residual styrene percentage is 0.019, pH value is 11.4 (high property), and the surface tension when it contains 40% of the total solids is 58 ° 7 ^ 3 / 〇11. It contains 23.4% of bound styrene, 0.001% clot, and 0.008% stable MG. It also contains 8.64% soap, believed to be potassium oleate. The impact of different rubber and water on the ink is shown in Table 1. Rubber bladder If the degree is less than 10% by dry weight, it will damage the erasability. F please Read the precautions on the back first and then ^ write this page). Binding · Central Economic Bureau of the Ministry of Economic Affairs®: Printed by the Industrial and Consumer Cooperatives-22- This paper standard is common to the Chinese National Standard (CNS) A 4 specifications (210 X 297 mm) 82.6. 40,000 剜 雄 (Pur IS IS # 次) ** Flexiverse Office 5 * 9 Office 3 Office 3 Turnover ^ 戬 thin. * DittDFP. Office 7 ^ [¢ ¾¾ 冰 鄄 ¾} Ling ** Goodyear 39.9 2108 SBr

Ln LJ Μ Μ 1 2 3 1625 丨 105 12 4 16 4 20 4 23_9 4 27-9 4 m temperature [Φ M NJ H * I- · Ui O ON M ^ 0 l ·-· Η * M h- · αι αι Ln Ln οι y ^ O VD νΰ VD V.0 Μ0 SBr Naleng col ^ ft 1625-102 Na Wen threshold chant * vj «sj 〇〇M 〇l VO 〇〇U1 LD private spare l-* M l · -· Η * H * 73b 69 · 9 65 · 9 62 £ 1_Punching device life order 0θ £ ι Township wf 〇- 000 Μ 〇ui Ln ^ fo • 〇l Ln (J1 un 办 办 仁 f _ Ln (J1 W lh Office U) • Participate in Ln in uprivate u • U1 Ol LH LH to _ · LH U1

Ol U1 U) • · Ln LH 津 1 涸 郎 _ »地 眇 劫 _wf U1 〇〇Μ Μ Sale • • • LJ αι 〇1 ϋl U1 Ο C0 ♦ • 〇〇Ο • ro s 〇1 〇1 Ul VO Μ 〇〇ο Η »o U1 ui Ul

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Jin yong ^ 鐹 鄹 講 幹 激 »Yehan (Bing®) .1_M, ______I 0 1 59 · 4 ΟΙ LH U1 Office M M VO VO ^ 〇j to U1 dyn / cm» t · · · U1 Ln un U1 Ln cn (ji ui ui A6 B6 V. Description of the invention (22) First, a pigment dispersion liquid consisting of solid pigment particles suspended in a dependable aqueous medium containing the first surfactant is used. It is added to the second Soap surfactants are in the latex of rubber emulsions of age-based aqueous media. Pigment dispersions and latexes are mixed with a sufficient amount of third surfactants. The third table and the placement of the active agents should be sufficient to stabilize the mixture. Therefore, the surface tension of the mixture is significantly reduced. In this way, ink can be made. In this manual, "ordinary writing paper" refers to a commercial type of paper whose standard surface has been subjected to standard treatment and classification, so the surface will release ions when wet The term "ion" commonly stands for water-soluble charged particles. "Cation" pseudo represents water-soluble charged particles with at least one positive charge. "Polyvalent cation" refers to water-soluble charged particles with at least two positive charges. It is generally believed The water mixture is an aqueous emulsion of rubber particles in which the colorant particles are not bound. This emulsion has a high PH value (element) and the ionic composition of the mixture is not disturbed, that is, monovalent cations (Na + and K +) It can maintain stability. When the ink is applied to ordinary writing paper, the ions present in the surface treatment of the paper will dissolve in the ink. Three things will happen. First, the acidity of the surface of the paper lowers the pH of the ink, so soaps The efficiency of the two surfactants is reduced, and the emulsion is cracked, even if the rubber and pigment are coagulated. Secondly, the multivalent cations (C a + +, M g + + and A 1 + + +) present on the surface of the paper will accelerate the aforementioned Caking phenomenon. The cation forms a water-soluble salt with soap surfactant and makes the surfactant ineffective. When the rubber and pigment in the ink are agglomerated, the water is absorbed by the paper. This makes the ink form a colored film on the surface of the paper The surface tension of the rubber is very low due to the fact that soap surfactants are not functioning at all-this paper is again applicable to China National Standard (CNS) A 4 specifications (210 X 297 mm) (please first Read the precautions on the back and then write this page) 丨 Installation · Order · Printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 82.6. 40,000 A6 B6 V. Description of invention (23) The height and rubber only produce the lowest degree to the surface of the paper " Wetting effect. Even if the glass transition temperature of the preferred rubber is -52 + /-5¾, the above situation still exists, so the film is expected to have a considerable degree of elasticity. Because the adhesion between the film and the paper is minimal, the coloring The film can be easily removed from the paper by friction. It should be understood that not all commercially available resin products can provide the effects of the present invention. The following table (Table 2 and Table 3) shows the performance degradation of commercially available resin products. (Please read the precautions on the back before filling in this page) 丨 Installation · Order · -25- 82.6. 40,000 This paper size is applicable to China ® National Standard (CNS) A 4 specifications (210 X 297 mm) 294703

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CO 1 q_ II StL EUnorocHc Tcrpolyrocf in > 3 CO > a tn > 3 tn > 3 > 3 詸 0 ra > 2 ui 5 f! 0Λ i (/ »I f > 3. 1? s * 4 CJ > 0 13 S 1. 40.0 1 | 3 (0 II 70.0 II 70.0 I 1 70.0 ^ II uo I so O 1 60: 0 I \ _ vo IL ---- < 9.0 I i one_0.0 one 1 1 1 .37.0 II 40.0 I is 〇L 〇.〇I 50.0 l_. 50.0 1 1.., 33.0 I 1. 50.0 II 30.0 I —uo 1 < 7.0 I 1 53.0 1 I 30.0 I .50.0 is called zop P o CM 〇CM 〇wa · 〇 »〇 · Os 〇 · <» 〇om uo " 2- w K · * -av ^ > om W 1 · * 〇 > Ό Ό L · K > • 2 ▲ MA Ό 4k o 0 1 n 1 FA5? S- • • * 1 FAS • • • -•-• * knee m anion / nonionic swim M 4Ί ff m to nfi fS 3 w v < · Km Kf * Km t ^ ·-V ^ > V «« Ο »V * Km v ^ · m Cheng P ¥ u · · * «\ -4 Cx · o Ο o-ooo ο 〇ooo 〇- w M! Adhesive paper 1 a 薙 Hf Vyo u ·» ο-oooo 〇o-u * U * 3t hauling ms,菓 slas (24) 鎺 2-a 揰 Mf 漭 顾 兴-筠 0 > 漥 康 3? A6 B6 V. Description of the invention (25) Erasable ink-polymer evaluation Erasability evaluation 1) Movinyl 970 40% solid D ay-G 1 ο EP-1 7 pigment 5 0g 25g 2) Formulation # 1 plus 25g of water 3) Movinyl 970 40% solid 50g Flexiverse 4343 sulphur black dispersion 10g 4) Unocal resin Res 4171 B asic V i ◦ 1 et 3 pigment 98g 2g 5) F 〇r π u 1 ati ο n # 4 Add water to viscosity 5 cps (please read the precautions on the back before writing this page). Printed. Ordered. Printed by Beigong Consumer Cooperative of Central Bureau of Standards of the Ministry of Economic Affairs-27- The standard of this paper is applicable to China National Standard (CNS) Grade 4 (210 X 297 public dreams) 82.6. 40,000 Beigong Consumer Cooperative of Central Bureau of Standards of Ministry of Economic Affairs Printing A6 _B6__ V. Description of the invention (26) Another application of the erasable ink composition of the present invention is suitable for writing instruments of the "roller-ball" type. This kind of pen is closely related to the traditional ball pen (bal bu paint), and its development method makes it self-contained, becoming another type of writing utensil of the traditional ball pen. In order to effectively explain and classify the use of the erasable ink used in the ball-point writing instrument of the present invention, it is necessary to introduce the development concept of the ball-point pen. The concept consistent with the facts represents the simplification of the development process. In addition, it also represents the mental growth and motivation of some research and development units involving ballpoint pen technology. , Shui Shui from the more prosaic style of ink and ink will be basically out of style. The left end of the steamed C preparation water and the outlet of the machine that has to be protected from the chemical structure and the non-end flow must be dried. The end of the machine must be equipped with a small bead label for the open space. This tube is higher than the end of the bearing, and it is different from the Dingkou exhibition town. It is not available in vitro. The special body tube has its surface problem caused by the use of the exposed dew. I have also written my own book on the exposure of the diameter, and the high-rolling method of the pre-cursor of the pearly content ink in the water-restricted water-reporting book is not the same as the original two ends. Make a plan to create gaps in the large-scale management and air-making water, so as to take advantage of the fact that Mozuji, the ambassador of the special customs, has taken control. Suck the sticky system and use the device to deliver the supply of Gao Chuanran and water. Do not «momentary volume and sexual strength through the penetrating force through the water-making small structure seepage structure ink is more than the quality of the pen to provide the degree of viscose sticky need the original clang. The system used by the original low system. The face-to-face question asked the fruit table to describe the effect of the writing on Zhang Shuizi. The ink on the writing paper was originally determined to be a book with a degree of solution. Because the original Chinese ink plug is rolled by a water roll, it moves to the correct level without blocking the front stick, and the pen is applied to the low paper size. The standard is applicable to the Chinese National Standard (CNS) A 4 specifications (210 X 297 public; ί) 82.6. 40,000 The Ministry of Economic Affairs, Central Bureau of Industry and Commerce, 8 Industrial and Consumer Cooperatives was printed by A6 _B6_ V. Description of Invention (27) The ink in the Qi Charger was guided to the ball at the pen end. The delivery tube controls the flow rate of ink, thereby reducing the potential problems of ink leakage around the ball, and excessive ink outflow and "drop formation" before and after writing. When using low-viscosity inks for practical ball writing applications, it was found that low-viscosity traditional organic stripe inks may be printed on plain paper to an unacceptable level. On the other hand, it was found that water-based ink does not overprint through paper. As a result, the development of water-based ink ballpoint pens with permeable fillers, delivery tubes, and balls has flourished. Prior art patent cases using this system to control the flow of water-based ink in ballpoint writing instruments include British Patent No. 1,139,038 and US Patent Nos. 3,446,564; 3,533,708; 3,572,954; 3,873,218; and 4,145,148. There are several items missing from the ink storage and delivery systems using the aforementioned types ("fillers, pen nibs, ball bars"). First, the delivery tube or pen nib often cannot provide sufficient continuous flow of ink to the balls for rapid writing. In addition, The method of using a filler to physically stabilize the ink in the reservoir significantly reduces the amount of ink present in the writing implement (to 1/2). Furthermore, inks that use pigments as colorants are different from soluble dyes. Blocks the capillary channel of the fiber reservoir and the delivery tube, further inhibiting and disturbing the flow and amount of ink delivered to the ball. The shortcomings of the ink-storage filler cause various ball-point pens without filler (hereinafter referred to as "non-fillers") , Pen nib, ball ball system ”). Although this system provides more effective ink storage, it still faces many problems under the delivery tube concept. The common purpose of the pen industry development industry is to formulate a type that can be used without charge器 -2 9-(please read the precautions on the back and then write this page) -installation-order · 'quan · This paper scale is applicable to the Chinese S West Standard (CNS) A 4 specifications (210 X 297 Gong; SS ·〉 82.6. 40,000 The A6 _B6_ Du Bei Printing Cooperative Printing Co., Ltd. of the Central Standards Bureau of the Ministry of Economic Affairs 5. The invention description (28) and the delivery tube or pen tip, while preventing the use of low-viscosity ink for smooth writing The invention of leakage and evaporation problems. This "no filler, no nib, ball system" design was shown in a series of "gelling ink" US patent cases, that is, US patent cases 4,671,691; 4, 6 8 6,2 4 6; 4, 7 8 6, 1 98; and 5,013,361. The patent case of Shitou describes the use of water-based ink without a filler, without a nib, a ball system and can reach low viscosity ink The smooth feeling of the system. Basically, this system uses pseudo-plastic or shear diluted ink. This ink, or "condensation ink", has a high viscosity rheology under normal shelving. Although the viscosity is generally lower than the ink used in traditional ballpoint pens. However, when exposed to a high shear rate when writing with a ballpoint pen, the viscosity will be reduced to less than lQCcps. Normal high viscosity makes the leakage phenomenon low , At the same time in the book The low viscosity produced at times and before and after provides low-viscosity inks to write down the velvet. When using this system, a high-viscosity filling tube should be installed between the rear end of the ink storage tube and the air. Control the evaporation and drying phenomena of stored ink. The erasable ink of the present invention can be effectively applied to the aforementioned three types of ball-point pen industry. Another development related to the ball-point pen industry is beneficial to this water-based erasable ink. .Traditionally, the balls used in writing utensils are made of gold hurricane. Since water-based ink does not "wet" the metal surface of the ball more effectively than some existing organic ink ink formulations, water-based ink is usually applied to metal ball atoms Poor writing effect when writing. The ceramic surface is more effectively "wet" by water-based ink, so it can provide smoother and more uniform ink coating. -30- (please fill in this page before Mif *: the precautions on the surface) Binding 'Order.. Thread. This paper scale is applicable to China National Standard (CNS) A 4 specifications (210 X 297 g; ^) 82.6. 40,000 A6 B6 printed by the 8th Industrial Cooperative Cooperative of the Central Standards Bureau of the Ministry of Economy and Economy 5. Description of the invention (29) This ceramic ball technology can produce excellent effects when applied to the erasable water-based water of the present invention. It is obvious that inks with higher surface tension and improved erasability can be used. The ball will roll more smoothly and the ink can only be written with less force. The marks written by the ink are more uniform and smooth. In addition, the organization of the ball produces less shear under predetermined conditions, which is its advantage. In the first type of ball pen system, namely the charger, pen tip, and ball ball system, the ink of the present invention basically has the same formulation ingredients and behaviors as those used in the pens of the felting pen end. The composition of the present invention is roughly the same as that described in the pen at the end of the felting pen, and can be applied to the second type of ballpoint pen product designed to use gel ink, that is, no filler, nib, ball ball system, and third type The ball-point pen, that is, no trouble charger, no nib, wave ball pen. Example 4 The "BIC METAL POIHT ROLLER FINE POINT" trademark type 1 commercially available ballpoint pen was disassembled. It includes the tube body, filler, pen tip and ball. The ink on all parts is cleaned, loaded with test ink, and the pen is reassembled. The composition of the test ink is as follows. Master Black KS5725 3.23gm. FC 129 surfactant 1. lgm.

Pliolite 2108 latex 42.0gn. Sorbitol / glycerin 3.5gB.

Octolite 453 〇. 4 g m. Demineralized water 9.82gm. -3 Buben paper is again applicable to the Chinese National Standard (CNS) A 4 said grid (210 X 297 «) 82 ^ 6. 40 00〇 (please Read the precautions on the back first and then fill out this page)-Pack · Order. • · A6 B6 5. Description of the invention (30) (Please read the precautions on the back before writing this page) The sorbitol / glycerin mixture is made of It is composed of two parts by weight of sorbitan and one part by weight of glycerin. The mixture was prepared by the standard procedure of the previous example. The viscosity is about 5.3 cps. The surface tension is about 23.7 dynes / cm. The finished product is written in an acceptable manner, and the written marks can also be erased. After five days, the product can still be written and its mark can be erased. , Ben Shi Example 5 "PILOT PRECISE ROLLER BALL V5" trademark type 2 commercially available ballpoint pen was disassembled. It includes a tube body, no filler, pen tip and ball. The ink on all parts is cleaned, the test ink is loaded, and the pen is reassembled. The composition of the test ink is as follows. Nitro black KS5725 3.2 .3 gm. That is C 1 2 9 surfactant 1.1 g m.

Pliolite 2108 latex 42.0gn · sorbitol / glycerol 3.5 · αι ·

Octolite 453 0.4gm. Demineralized water 9 * 82gm · Printed by Beigong Consumer Cooperative of Central Bureau of Economic Affairs of the Ministry of Economy The sorbitol / glycerin mixture is composed of two parts by weight of sorbose and one part by weight of glycerin. The mixture was prepared according to the standard procedures of the previous examples. The viscosity is about 5.3 cps. The surface tension is about 23.7 dynes / cm. The products produced are written in an acceptable manner, and the written notes can also be erased. After five days, the product can still be written and its mark can be erased. -3 2-82.6. 40,000 The size of this paper applies to China National Standard (CNS) Grade 4 (210 X 297 g *) 294703 A6 B6 V. Description of invention (31) Example 6 '' SAKURA BALL SIGN ' Type 3 commercially available ballpoint pens were disassembled. It includes a tube body, no filler, no nib and ball. The ink on all parts is cleaned, the test ink is loaded, and the pen is reassembled. The composition of the test ink is as follows. Sulphur black KS5725 3.2 3.2 gm. FC 129 surfactant 1 · UH · Pliolite 2108 latex 42.〇g ® · sorbitol / glycerol 3.5gm. Octolite 453 0.4gm demineralized water 9. 8 2gm · ( (Please read the precautions on the back before writing this page) -Installation _ Central Ministry of Economic Affairs, Ministry of Economy, Industry and Consumer Cooperation Du Printed Sorbitol / Glycerin Mixture is composed of two parts by weight of sorbitol and one part by weight of glycerin Formed by. The mixture was prepared according to the standard procedures of the previous examples. Viscosity is about 5.3 c PS 〇 Surface tension is about 23.7dynes / cm. The writing of the manufactured product is unacceptable, it will produce a "skip" phenomenon, that is, the mark of the mine is not connected, and then stop writing. The ball is blocked. Example 7 "SAKURA BALL SIGN" trademark category 3 The commercially available ballpoint pen is disassembled. It includes a tube body, no filler, no nib and ball. The ink on all parts is cleaned, filled with test ink, and then the pen is reassembled. The wave bead end is replaced with "PARKER VECTOR ROLLER BALL, the ball end product, has been blocked due to the SAKURA ball in the previous example. Test ink set-3 3- This paper scale is applicable to the Chinese National Standard (CNS) A 4 specifications (210 X 297 mm) 82.6. 40,000 order. A6 B6 5. Invention description (32) (Please read the notes on the back first Write this page again) The results are as follows. DAYGLO MAGENTA EP21 25gm. (Llgm. Solid in water) FC 129 surfactant 0.5gm.

Pliolite 2108 latex 50gm. Sorbitol / glycerin 25gm. The sorbitol / glycerin mixture is composed of two parts by weight of sorbose and one part by weight of glycerin. The mixture was prepared by the standard procedure of the previous example. Cobalt degree is about 12 c p s 〇 Surface tension is about 42.5dynes / cm. The finished product is written in an acceptable manner, and the written marks can also be erased. After five days, the product can still be written and its mark can be erased. The erasable ink of the present invention is formulated with a higher viscosity (about 5 cps of the standard equation to 15 to 20 cps with the addition of sorbitol instead of water) and is applied to the third type of ball pen, that is, without filling There is no nib, and it has excellent performance when there is a ball bearing system. The rheological properties possessed by the erasable inks of the present invention are usually combined with the aforementioned pseudoplastic or shear thinning ("gel") inks, which have not been known so far. In fact, the test shows that the ink of the present invention is a Newtonian bar fluid, which is printed by the Industrial and Commercial Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy or even inflated. However, it has been found through research that the high catfish degree of the ink of the present invention plays a good role in this type of writing implement. Furthermore, it was found that the high viscosity of the product of the present invention has excellent erasability, so it provides one of the brand-new product types of erasable ball pens. The Newtonian rheology of the ink of the present invention is expected to be used to illustrate the third type -34- This paper is again applicable to the China National Standard (CNS) A 4 specifications (210 X 297 mm> 82.6. 40,000 Central Bureau of Economic Affairs of the Ministry of Economic Affairs S-Consumer Co., Ltd. Du Printing A6 B6 V. Description of the invention (33) The efficiency of the "gel ink" of the ballpoint pen is quite incompatible with the shear dilution ink, so the ink of the present invention is not expected to function as the latter. It has been found that the third type of ball pen can effectively use the aforementioned “gelled” ink by adding the shear gel dilution, impact resistance and water fastness improving additives described in the aforementioned “gelled ink” patent case. The aqueous ink of the present invention is applied In the third type ball pen with ceramic balls with hydrophilic surface, its performance is significantly improved compared with the traditional metal surface ball ball. The efficiency of the ink of the present invention in the third type gelled ball pen is obviously subject to the shear of the ink Unsteadiness of the force (especially more than shear dilution). It is observed that the shear force at the working end of the pen at the end of the fleece pen is about SOOOsec- ». The large ball of the traditional ballpoint pen produces about eooos The shear force of ec-1. Under this level of shear force, the standard preparation of the ink of the present invention is non-shear-stabilized. The example shows that the emulsion starts to become unstable and cracked when writing. In the case of the pen at the end of the fleece As the cracking occurs outside the pen end and the ink “caking” is pseudo-transmitted to the paper, the operation is not affected. However, in the case of the ball pen, the ink “caking” will be brought back to the ball seat and the ball and The seat is clogged. Especially like the third type ball pen, the ball is designed with a smaller ball diameter. When the ink is transported around the ball and on the paper, the ball will generate a high shear force. The shear force is about 9 0 0 0 sec-1. The standard formulation of the ink of the present invention increases the shear force, especially about 6 Q 0 0 sec-1, the emulsion will crack, and the ink is transferred to the paper in the form of two-phase water-rubber The two-phase shape will block the ball on its seat, even the larger-diameter ball, and interfere with the beginning of the writing process. At the same time, it will also cause a "skip" phenomenon, 卽 -35-- ---------------- 1 ^ ------ install ------ it ----- Λ (please read first (Notes on the back and then write this page) This paper scale is applicable to the Chinese National Standard (CNS) A 4 specifications (210 X 297 mm) 82.6. 40,000 Printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A6 ___B6_ V. Description of the invention (34) Unexpected breakage occurred in the writing marks. The emulsion cracking effect is like irreversible destruction of the emulsion. Fortunately, the present invention can solve the above problems by adding shear stability additives to the ink formulation. Ideal shear stability The additive must be able to stabilize the emulsion to resist the shear force generated by the pen using the ink, while not excessively increasing the ionic instability that is beneficial to the operation of the present invention. When polyhydric alcohols such as sorbitol and glycerin are added to the formulation of the present invention at a concentration equal to or greater than that used as a wetting agent, the emulsion can be stabilized until the resulting ink can be rolled at a higher shear force. Used in the pen without clogging. This high amount of shear stabilizer also increases the uncovered time, which is the time before the ink on the tip of the pen becomes too dry to be used without the cover. The concentration of the shear stabilizer must be optimized. Excessive wetting agent will prolong the drying time of the mark to an unacceptable level and cause "ghosting", which is difficult to erase. The above is an explanation based on the preferred embodiment, but various changes, improvements, and replacements made after understanding the contents of this specification should be regarded as not departing from the scope of the invention of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a schematic diagram of the composition of the present invention coated on paper with a pen; FIG. 2 shows the composition formed on the paper before the film and carrier escape; FIG. 3 shows the composition formed The situation after the film and the carrier have escaped; Figure 4 shows the film formed in Figure 3 erased by a stroke; Figure 5 is a graph of the effect of the ink surfactant on the surface tension of the ink «. -3 6-(Please read the precautions on the back before writing this page)-Binding · Order · · · · · · This paper scale is applicable to China National Standard (CNS) A 4 specifications (210 X 297 mm) 82.6 . 40,000

Claims (1)

Patent Application No. 82108710 of Beigong Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs submitted an amendment to the patent application on October 8th, 1985. 1. A medium composition for writing, which can be erased from conventional stationery paper with a pencil The composition is a non-shear-reducing composition, which contains: (a) An emulsion composed of a non-carboxylated styrene / butadiene rubber non-continuous phase. An emulsifying agent and a continuous phase of an aqueous carrier; the above non-continuous The entangled phase has a styrene / butadiene ratio of 24/76, a glass transition temperature of -52 ± 5t and accounts for 40 to 60% by weight of the emulsion; the above emulsifier is a carboxylate and accounts for 8.S4% by weight of the emulsion This emulsion has the ability to change from a stable first state of emulsion to a second unstable state when it is in contact with a traditional stationery paper surface, so that the non-contiguous phase of rubber quickly coalesces to form a rubbery mucous membrane with low viscosity The state is deposited directly on the paper surface; the viscosity of the emulsion is 30 ~ 3 0 0 cps, its content accounts for 30 ~ 96 weight of the writing medium composition (b) The colorant dispersed in the emulsion, the colorant Having when the emulsion consists of the above When the first state is changed to the second state, it is combined with the rubber mucous membrane, and this colorant accounts for 1 ~ 50% of the writing medium composition reset; (c) anti-drying agent, its content is the slip 15 weights of the composition of writing medium ----- ·, the amount is less than; (d) Fluorine stripe surfactant, its content is less than 3% by weight of the composition of writing medium; the content of the composition of writing medium The viscosity is below IOcps. The surface tension of this paper scale is the Chinese National Standard Falcon (CNS) Α4 specification (210X297mm> 1.L ------ ^ installed ------ order ----- " Line (please read the precautions on the back before drawing) 294703 I D9 is 25 ~ 35 dynes / c 丨. 2. For the composition of item 1 of the patent application garden, the emulsifier is potassium oleate. 3. For example, the composition of item 1 of the patent application scope, wherein the fluorine strip surfactant is a fluorinated alkyl carboxylate. 4. The composition of item 1 of the patent application scope, wherein the anti-drying agent is selected from water-soluble It is a kind of organic organic ester, ester or alcohol, and has a boiling paste of 140 ~ 300 T. 5. If the composition of claim 1 of the patent scope is applied, Among them, the composition has a degree of 2 ~ lOcps. 6. The composition as claimed in item 1 of the patent scope, wherein the composition has a viscosity of 5 ~ lOcps. Printed by the Ministry of Economic Affairs Central Falcon Bureau Co-operative Consumer Cooperative In other words, rub the object into the pen group I, lead reduction and low f / can be cut with one force, other than. The object is ~ the product is composed of a mass group / 1 for the use of the alkene, B in addition to the benzene standard on the chemical species Carboxy 1 sheet of non-paper} 7 · Guo (a literary Yuyou liquid emulsion of this liquid latex alkene. Two-phase state performance float & crocodile holding a protective phase water entanglement and 1 lianzi, non-qualitative love The inlaid rubber is even coated with the non-adhesive rubber sheet, and the emulsified emulsion is formulated with a compounding agent, but it is not soluble in water and forms a water-soluble contact. National Kneading (CNS) A4 specification (210X297mm> A9 B9 C9 D9 sex compound, it loses its emulsifying ability, the rubber non-continuous mineral phase accounts for 40 ~ 60% of the emulsion reset, and its glass transition temperature is -52 ± 5t, the ratio of styrene and butadiene is in the range of 20:80 to 55:45, and the rubber particle size is 7 〇 〇A °; the above emulsifier is a carboxylate and accounts for 8.64% by weight of the emulsion, and the emulsion has a stable effect from the emulsion when it is in contact with the paper surface and the emulsifier is neutralized The first state is changed to the second state where the emulsion is unstable, allowing the rubber non-yung-yong phase to coalesce quickly to form an adhesive film with low viscosity and directly deposited on the paper surface; this emulsion accounts for 30 ~ 30% of the medium composition for marking 96% by weight; (b) water-insoluble colorant dispersed in the non-carboxylated styrene / ethylenediene rubber mash emulsion, this colorant remains in the rubber mucous membrane after the emulsion is converted to the second state In this, the colorant accounts for 1 ~ 50% by weight of the marking medium composition; (c) Fluorine stripe surfactant, this surface active agent has no effect on the emulsion when the marking composition is in contact with the paper surface The characteristic of reducing the surface tension of the composition under the transition from the first state to the second state. This surfactant accounts for less than 15% by weight of the marking medium composition; printed by the Beigong Consumer Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs «. (d) anti-drying agent, Its content is 15% by weight or less of the marking medium composition; the viscosity of the marking medium composition is 10 cps or less, and the surface tension is 25 to 35 ynes / cm. The size of this paper adopts the Chinese National Standard (CNS) A4 specification (210 X 297 mm)