JPS5986673A - Water-base ink for ball-point pen - Google Patents

Abstract

PURPOSE:To provide a water-base ink for ball-point pens free from a creak in writing, by dissolving dyes, fluorine-base surfactants or water-soluble silicone oils, and alkali metal salts of aminotrimethylenephosphonic acid in solvents. CONSTITUTION:Dyes, fluorine-base surfactants or water-soluble silicone oils, and alkali metal salts of aminotrimethylenephosphonic acid, together with dye- dissolving assistants, rust preventives, or preservatives added as required, are dissolved in solvents comprising water and polyols, removing a creak between balls and tips. Typical formulation is as follows: 100pts.wt. solvent (65-80pts.wt. water and 35-20pts.wt. polyols), 3-6pts.wt. dye dissolving assistant, 1-2pts.wt. sum o rust preventive and preservative, 0.1-1pts.wt. fluorine-base surfactant or 0.5-5pts.wt. water-soluble silicone oil, and 0.5-10pts.wt. alkali metal salts of aminotrimethylenephosphonic acid.

Description

[Detailed description of the invention] This relates to ink for Le Pen.

Conventional water-based ballpoint pens, which use dyes dissolved in water-soluble solvents, do not rotate smoothly when writing, resulting in the sound of the ball and the tip, as well as blurred writing and ink running out. It has the disadvantage of being prone to poor handwriting. Therefore, various attempts have been made to reduce the surface tension of ink in order to eliminate these drawbacks, but none of them have been able to sufficiently achieve the intended purpose even if the surface tension has been reduced. There is a drawback.

The present invention was completed with the aim of creating a water-based ballpoint pen ink that does not have the above-mentioned drawbacks, and it uses water and polyhydric alcohol as a solvent, and adds a dye, a fluorine-based surfactant or a water-soluble silicone oil, and an amino trichloride. It is characterized in that each required amount of an alkali metal salt of methylenephosphonic acid is dissolved therein.

In the present invention, water and polyhydric alcohol are used as solvents, and dyes and fluorosurfactants or water-soluble additives and rust preventive agents are added to the solvents.
It is a compound that eliminates the sound of balls and chips by being mixed with a fungicide.First, in addition to water, ethylene glycol and propylene are used in consideration of evaporability, dye solubility, and bleed prevention properties. A polyhydric alcohol such as glycol lv1 dynamite glycerin or triethanol μamine is used in combination. In addition, as a fluorine-based surfactant to be dissolved in this together with a dye, etc., a non-ionic fluorine-based surfactant, Florard FC/70 (3 (trade name: manufactured by Sumitomo 3M)) was used as a water-soluble silicone oil. lowers the surface tension of materials such as Toshiba Silicone Co., Ltd. (trade name: Toshiba Silicone Co., Ltd.). On the other hand, as an alkali metal salt of aminotrimethylenephosphonic acid for imparting lubricity, aminotrimethylenephosphonic acid! Sodium and aminotrimethylenephosphonic acid
Potassium etc. are used, for example, commercially available Kenrox #1
06 (trade name - manufactured by Teikoku Kagaku Sangyo Co., Ltd.), etc. may be used. Furthermore, acid dyes and direct dyes that are generally used as ink dyes are sufficient. In addition, the reason why alkali metal salts of aminotrimethylenephosphonic acid are used together with fluorosurfactants or water-soluble phosphoric oil is to improve lubricity without impairing the performance of the ink, and other phosphorus compounds may be added. Even if lubricating properties are added, the ink performance is not adversely affected, so the desired ink cannot be obtained, and the addition of fluorine-based surfactants or water-soluble silicone oil without adding an alkali metal salt of aminotrimethylenephosphonic acid When either of these is used alone, even though it has the effect of lowering the surface tension, it is unsuitable because it produces a sound of notes and causes directional writing, and also causes blurring of the writing and running out of ink in the middle of writing. Even when an alkali metal salt of aminotrimethylenephosphonic acid is used alone without adding a fluorine-based surfactant or water-soluble silicone oil, it similarly gives direction to writing and prevents ink from running out during writing. It has been experimentally shown that this occurs. Next, although the amount of the fluorine-based surfactant, water-soluble silicone oil μ, and aminotrimethylene phosphorus potash metal salt is not particularly limited, a typical formulation is 700 parts by weight of the solvent (water Otsu 5-za 0 parts, polyhydric alcohol-1v
3. ! ; -20 parts), 3 to 6 parts of dye dissolution aid, rust preventive and fungicide content /, -2 parts, fluorine surfactant 0
．． 0/-7 parts or water-soluble silicone oil iv O
, s -s parts and Oj to 10 parts of an alkali metal salt of aminotrimethylenephosphonic acid are blended. This is because if the alkali metal salt of rimethylene phosphonic acid is less than 0.05 parts, it will not be possible to eliminate the note sound, and if it is added in excess of 70 parts, the viscosity of the ink will increase and the writing pressure will not be high. This is because there is a risk that it will be difficult to clean, and there is a unique odor that may cause some users to feel uncomfortable.
part is preferred.

As is clear from the above description, the present invention involves dissolving a fluorine-based surfactant or water-soluble silicone oil and an alkali metal salt of aminotrimethylenephosphonic acid in an ink consisting of a dye and a solvent consisting of water and a polyhydric alcohol. As a result, the rotation of the pole becomes smooth when writing, eliminating the noise caused by the ball and tip, and also preventing blurring of the writing or ink loss, as well as preventing the writing from becoming directional, which improves the clarity of the handwriting. Together, they are extremely useful as an excellent water-based ballpoint pen ink.

Example 1 Solvent water 70 parts ethylene glyco-/I/ 70 parts diethylene glyco-yv/! r part thiodiglycol j part black direct dye direct black/9 J part (product name: manufactured by Orient Chemical Industry Co., Ltd.) Fluorine surfactant y part 5)'FC-/ 70-0 0.0
! (Product name: manufactured by Sumitomo 3M) Aminotrimethylenephosphonic acid S[lium Kenrox #101. 2 parts (product name: Teikoku Kagaku Sangyo Co., Ltd.) Example 2 Solvent water 75 parts ethylene glycol/I/ 70 parts diethylene glycol 10 parts thiodiglycol/
l/! ; red acid dye water-soluble silicone oil TOSHIBA silicone oil/L/YF3za112/,
3 parts (Product name: manufactured by Toshiba Silicone Co., Ltd.) Sodium aminotrimethylenephosphonate (Product name:
Manufactured by Teikoku Kagaku Sangyo Co., Ltd.) 601-

Claims (1)

[Claims] A water-based ballpoint pen characterized in that a dye, a fluorosurfactant or a water-soluble silicone oil, and the required amounts of an alkali metal salt of aminotrimethylenephosphonic acid are dissolved in water and a polyhydric alcohol as a solvent. Ink for