JPS5920368A - Ink - Google Patents

Abstract

PURPOSE:To provide an ink yielding clear written lines excellent in sunlight resistance, weatherability, adhesion, and hiding power on the surface of substrates, by adding antifloating agents to inks consisting of solvents, resins, metallic powder pigments, and pigments. CONSTITUTION:10-50% resin (e.g., alkyd resins), 15-40% metallic powder pigment with a particle size of 50mu or below such as brass powder, Al powder, or copper powder, 1-20% org. or inorg. pigment (e.g., carbon black), and 0.01- 3% antifloating agent selected from anionic, nonionic, or cationic surfactants (e.g., high-MW unsatd. polycarboxylic acids or their salts) are dissolved or dispersed in 30-60% one or more solvents selected from aromatics, alcohols, ketones, esters, or solvent naphtha.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil-based ink for writing instruments, stamps, and the like that uses metal powder. Specifically, it provides an oil-based ink that is clear, sunlight resistant, weather resistant, has good adhesion, and has hiding power on the surface of base materials such as wire mesh, plastic, glass, paper, and leather.

Conventionally, ink was made by dispersing metal powder in a vehicle in which a resin was dissolved in a solvent, so it had the following drawbacks: (1) Poor stability over time, causing the metal powder and vehicle to separate in a short period of time. .

(2) Only gold, silver, and copper color types are available.

(3) The ink marked on the surface of the substrate with the ink mixed with metal powder and pigment is separated from the metal powder and pigment (
◇ Also, various technologies have been developed and put into practical use for printing inks and paints. However, as ink for writing instruments and stamps, there are Japanese Patent Publication No. 27975/1975 ■ Japanese Patent Publication No. 27624/1977 ■ Japanese Patent Publication No. 28176/1987, but aren't they all expensive to manufacture? Rimata,
Disclosures were made regarding storage stability over time, ink flowability, etc., and various problems when using a mixture of metal powder and pigment could not be resolved.

The present invention provides an ink that eliminates the above-mentioned drawbacks.

That is, an ink for writing instruments, which is characterized in that an ink comprising a solvent, a resin, a metal powder pigment, and a pigment is added with a color separation preventive agent. ”.

Solvents used in the present invention include aromatic solvents such as toluene and quinolene, alcohol solvents such as butanol and hexanol, ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone, ester solvents such as ethyl acetate and butyl acetate, and others. , solvent naphthas, olefin compounds, etc. These solvents can be used alone or in combination of two or more. Vi30 as usage amount
Use in the range of ~60%.

The composition is determined by taking into consideration the dispersibility of the soluble metal powder and pigment in the resin described later.

Next, the resin used in the present invention is one that has good adhesion to metals, plastics, leather, etc., and has good solubility in the various solvents mentioned above.

These resins should have low acid values (ketone resins, alkyd resins, acrylic resins, polyamide resins, polyester resins, phenolic resins, xylene resins,
Acrylic acid ester resins and the like can be used alone or in combination of two or more. Usable amount is 10%
Use in the range of ~50%.

Next, the metal powder used in the present invention includes brass powder,
Aluminum powder, copper powder, etc. can be used.

It can be used if the grain size is 50 or less.

Further, powders treated with higher fatty acids such as stearic acid or salts thereof or untreated powders may be used.

That is, a leafing type or a non-leafing type can be used.

The amount used should be sufficient for concealment, 15% to 40%.
Can be used within the range.

Next, the pigment in the present invention will be explained.

Inorganic pigments and organic pigments can be used as pigments. Examples of inorganic pigments include titanium oxide, calcium carbonate, red iron, carbon black, etc., and examples of organic pigments include Brilliant Carmine 5B, Brilliant Carmine 6B, and Lake Red Cl. -Killed D, Brilliant Carmine BS
, Rake Red 4R, 7 Food Stret FOR, Fast Yellow G, Fast Yellow 10G, Phthalon Anine Blue, Phthalon Anine Green, Yellow Lake, Blue Lake, Aniline Black, etc.
Microlith Scarlet RT, Microlith Yellow 3GT, Microlith Red BRT, Microlith Brown 5RT, which are coated with the above organic pigments with resin.
Microlith Green GT, Microlith Blue GST
, Microlith Black GT (trade name, manufactured by Ciba Geigy), can be used in a range of 1% to 20%.

K type yellow 3GK, brown 2RK, micro squirrel scarlet RK, red BRK, blue 4GK.

Green GK, Black OK A type Yeo-4GA, Brown 2RA, Scarlet RA,
Red 2BA, Blue 4OA, Black C Next, as the color separation preventing agent used in the present invention, nonionic, anionic, and cationic activators can be used, but in particular, high molecular weight unsaturated polycarboxylic acids, or salts thereof, Salts of long-chain amines and unsaturated polycarboxylic acids, silicone, fluorine-based activators, long-chain polyaminoamide phosphorus #II salts, etc. are preferably used alone or in combination of two or more.

For example, can be used in the range of 0.01% to 3%, but α1% to
It is desirable to use it within a range of 1%.

Next, an example will be explained.

Example (1) [Liquid A] 33 parts by weight of xylene (hereinafter referred to as parts by weight), 6 parts by weight of acrylic resin
After dissolving 0 parts, apply anti-separation agent BYK-P104S.
(manufactured by Bick Mallinckrodt) by mixing and dissolving 15 parts of gold powder (metal powder) A 700 (particle size 5p to 20p) (
(manufactured by Fukuda Metal Foil and Powder Co., Ltd.) were mixed and stirred and dispersed for 1 to 2 hours.

[Liquid B]

30 parts of the pigment Microrethread RT (manufactured by Ciba Geigy) was mixed and dispersed in 70 parts of xylene.

Next, 115 parts of the liquid B was gradually mixed and dispersed in 885 parts of the liquid A to prepare an ink. When this ink writing instrument was impregnated with paper, paper, synthetic leather, glass, and stainless steel plates, clear wine-colored writing lines were obtained without separation of the pigment and metal powder.Example 0 2) In the same manner as in Example 1, [Liquid A] 30 parts of xylene, 10 parts of butanol, 30 parts of coumaron resin, 15 parts of silver paste (3ap120: product of Showa Aluminum Co., Ltd.) Color separation inhibitor α5 parts (to B7-P104S: Pick・Made by Mallinckrodt
mixed and dispersed.

Next, 85.5 parts of the above liquid A was added with B prepared according to Example 1.
14.5 parts of the liquid was mixed and dispersed little by little to produce an ink.

When this ink was soaked in a writing instrument and written on paper, cellophane, synthetic leather, glass, or stainless steel plates, the pigment and metal powder did not separate and a clear metallic colored writing line was obtained.

Example (3) Xylene 40 parts Coumaron resin 20 parts Acrylic resin 10 parts Silver paste 15 parts (Sapt2o: Showa Aluminum Co., Ltd. product) Color separation inhibitor 1 part (ByK-VP240S: Pick Mallinckrodt Co. product) Example Mix, dissolve and disperse in the same manner as 1, [Liquid A]
The other [liquid B] was 70 parts of xylene and 50 parts of pigment (Microlith Blue GET: manufactured by Chino Geigy Co., Ltd.)
Then, 14 parts of Liquid B were mixed and stirred little by little with 86 parts of Liquid A to produce an ink. When this ink was written in the same manner as in Example 1, a clear writing line with a color of meta-blue was obtained. If you use a rubber stamp to stamp paper, leather, glass, stainless steel plates, aluminum, etc., the colors will be separated* v>
A clear and metallic impression was obtained.

As described above, the ink produced in Examples (1), (2), and (3) does not cause separation of metal powder or pigment, has good stability over time, and can be used to surface various substrates. The writing lines drawn on the surface of It is possible to produce ink with a color reputation of

that's all

Claims (1)

[Claims] An ink for writing instruments comprising a bath agent, a resin, a metal powder pigment, and a pigment, which is characterized in that a color separation preventive agent is added to the ink.