JPS5941369A - Ink composition with alcohol as chief solvent - Google Patents

Abstract

PURPOSE:To provide titled composition prevented from chalking, free from clogging and/or ink blur, thus improved in writing characteristics, comprising a dye or pigment, alcohol solvent, alcohol-soluble resin, and hydroxyalkyl pyridine derivative of specific formula. CONSTITUTION:The objective composition comprising (A) a dye or pigment, (B) pref. 50-75wt% of an alcohol solvent such as ethanol, ethylene glycol monoethyl ether, (C) pref. 7-13wt% of an alcohol-soluble resin such as phenolic or ketone resin, and (D) pref. 2-7wt% of a hydroxyalkyl pyridine derivative of formula (R is H, or 1-4C alkyl; n is 1-4) (e.g., propanol pyridine, 2-methyl-6- propanol pyridine). USE:For marking pen, ball point pen for low-viscosity ink, writing utensils for recorders, and stamping.

Description

[Detailed Description of the Invention] This invention is a marking pen, a ballpoint pen for low viscosity ink, Yl[1. The present invention relates to an ink composition suitable as an ink for use in gu, Hironohana TKL shells, or as an ink for stamps.

These inks are roughly divided into two types: oil-based inks whose main solvents are hydrocarbon, ketone, or ester solvents, and water-based inks whose main components are ice and polyhydric alcohols.The former is quick-drying. However, there are problems with the odor and toxicity of the solvent, and the latter does not have an odor or 11 properties, but is slow drying, and each has its own problems. In order to solve both of these drawbacks, alcohol-based inks containing alcohol-based solvents and/or ethylene glycol alkyl ether-based solvents as main solvents are on the market. However, alcohol-based inks also have drawbacks as described below.

11) Because it is hygroscopic, the handwriting will absorb
] precipitates and causes the phenomenon of chalking.

(2) When used for writing, the ink inside the nib absorbs moisture and water-insoluble resin components precipitate, causing the ink to smear and cause damage! Become iIA.

This invention is an alcoholic Indian #,n JJQ'l
Of course, the above drawbacks have been resolved by 19.
! This is an ink composition whose main agent is an alcohol made of a hydroxyalkylpyridine derivative represented by the formula (1).

[R represents H or an alkyl group having 1 to 4 carbon atoms, and n represents an integer of 1 to 4. ] Cole soluble dyes are used, such as C, 1, Solvent Yellow 1. 3. l 3.
34°C, 1, Solvent Orange 24, 25°C, 1, Solvent Red 34.49.67, 69
°C, 1, Solvent Violet 10.16.2
4°C, 1, Solvent Blue 2.16.30.3
3゜34, 38.42゜(,:,1.Solvent Black 14.17.19
゜20, 28゜C, I, Solvent Green 10, 11゜C, 1,
Solvent Brown 17.19.20゜31, 35
．． An example is 36°.

When using pigments, all normal pigments can be used, but processed pigments treated with alcohol-soluble resin are advantageous. (name) and Daimicron Color (Dainichiseika (trade name)) are examples.

Examples of alcoholic solvents used in this invention include lower alcohols such as methanol, ethanol, isopropanol and butanol, and ethylene glycol monoalkyl ethers such as ethylene glycol monoethyl ether and ethylene glycol monobutyl ether.

The alcohol solvent accounts for 40 to 8511 of the entire ink composition.
Only % (hereinafter referred to as %), preferably 50 to 75% is used. BI of alcohol solvent
Up to 10% MIII, add ester solvents such as benzyl alcohol, diethylene glycol 7-methyl ether, carpitols, ethylene glycol monophenyl ether, n=butyl AM acid, etc., and ketone solvents such as methyl isobutyl ketone to increase solubility. Alternatively, the evaporation rate can be adjusted.

Examples of the alcohol-soluble resin used in this invention include natural or synthetic resins such as phenol resin, xylene resin, ketone resin, rosin and its derivatives, polyvinyl butyral, and shellac. Resins, ketone resins, rosins and their derivatives are preferably used. These resins are used in an amount of 5% to 20%, preferably 7% to 13%, of the entire ink composition.

If the resin is less than 7%, it tends to stick to the writing surface, and if it is more than 20%, the viscosity becomes too high.

Examples of hydroxyalkylpyridine derivatives that can be used in the present invention include propatoolpyridine, ethanolpyridine, biridinecarbitonope-2-methyl-6, propatoolpyridine, ethanolpyridine, propanolpyridine, and propanolpyridine. total amount of things (),
1-10% can be used, preferably 2-7%. If it is less than 0.1%, there is no effect of preventing chalking, and 10%
If the amount is too large, drying will be delayed and there will be some odor. Other additives such as activators, preservatives, fragrances, etc. that are normally used in alcohol-based inks may be added.

To prepare an ink composition from these components, all the components are put into a weighing machine and a despar, stirred at 18 to 50'C for 2 to 4 hours to dissolve uniformly, and then filtered to prepare the ink composition. Make it a thing.

Next, Example 13 will clarify the present invention.

Example 1 Dipon Fast Black RB 10% (trade name, manufactured by BASF Co., Ltd., C,1, Acid Black 12
3. Chrome autometal dyeing ()ethanol
75% 2-propertool pyridine
0 parts of 5% Hylac 1 1 OH1 (trade name, ketone resin manufactured by Hitachi Chemical Co., Ltd.) All the above ingredients were put into a death bar and stirred at 30'C for 3 hours to obtain a black ink.

Example 2 Orazole Red aGL 5% (trade name, manufactured by Ciba Geigy) Ethylene glycol monomethyl ether 5% (β-hydroxyethyl)pyridine 5% Nicanol IP
100 10% (trade name, manufactured by Mitsubishi Gas Chemical Industries, Ltd., phenol-modified xylene resin) A red ink was obtained according to Example 1.

Example 3 Spirion Blue CRM 5% (trade name, manufactured by Fukatogayahigakuri) Ethanol 80% 2-methyl-6-propatolpyridine 5% Fumarude No.
31 10% (trade name, manufactured by Arayo Kagaku Kogyo Co., Ltd., rosin-modified maleic acid resin) A VT color ink was obtained in accordance with Example 1.

Example 4 Fuji AS Blue 8% (manufactured by Fuji Shiroki Co., Ltd., processed pigment, pigment needle is C01,74160) Ethanol 80% 3-propertool pyridine 5% Hytanol 11
33 7% ([1 Ritsu Kasei, alkylphenol resin) According to Example 1 (Tazoshi 7 doors; Sho Koshu 1 cut) Blue ink was obtained. )

Claims (1)

[Scope of Claims] An ink composition whose main solvent is an alcohol consisting of a pigment, an alcoholic solvent, an alcohol-soluble resin, and a hydroxyalkylpyridine derivative represented by the general formula (1). [R represents H or an alkyl group having 1 to 4 carbon atoms, and n represents a case number of 1 to 4]