JPH0397776A - Oily maker ink - Google Patents

Abstract

PURPOSE:To obtain the title ink excellent in retaining property of ink written on nonabsorbable face of glass, metal, resin, etc., by adding a carboxylated polyoxyethylene alkyl ether as an additive to a coloring agent, resin and organic solvent. CONSTITUTION:The aimed ink obtained by adding a carboxylated polyoxyethylene alkyl ether expressed by the formula (n is 1-20; R is 1-20 deg.C alkyl; M is H, metal such as Na or K, ammonium or alkanolamine), preferably of 0.5-7wt.% as an additive to a coloring agent (e.g. dye or pigment), preferably of 1-50wt.%, resin (e.g. rosin), preferably of 1-30wt.% and organic solvent (e.g. methanol or methyl acetate), preferably of 20-95wt.%.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an ink composition for use in oil-based markers,
More specifically, the present invention relates to an oil-based ink that is excellent in fixing handwriting on non-absorbent writing surfaces such as glass, metal, and resin.

[Conventional technology]

Conventional oil-based markers have the disadvantage that when written on non-absorbent surfaces such as glass, metal, or resin, the handwriting does not stick well, and when the handwriting is rubbed with cloth, paper, etc., the handwriting is erased. was.

[Problem to be solved by the invention]

The present invention improves the fixation of handwriting on non-absorbing surfaces of conventional oil-based marker inks, and provides an oil-based marker ink that maintains the initial handwriting without erasing even when rubbed against any non-absorbing surface. The company provides marker ink.

[Means to solve the problem]

In order to achieve the above object, the present invention is an oil-based ink characterized in that at least a carboxylated polyoxyethylene alkyl ether is added as an additive to a colorant, a resin, and an organic solvent.

Each component of the present invention will be explained below.6 Coloring agents used in the present invention include acid dyes, alloy dyes, and soluble dyes in organic solvents.
Basic dyes and the like are used. Pigments can also be used. For example, dyes such as Oil 1 Nod 5B (manufactured by Orient Chemical Industry Co., Ltd.), Varifast Blue #2606
(same" 2), Bali Fast Red #2303, #33
04 (same as above), Spiron Red GEH, BEH (manufactured by Hodogaya Chemical Industry ■), rhodamine, and methyl violet. Furthermore, both inorganic pigments and organic pigments can be used as pigments, such as carbon black,
titanium oxide, iron black, red iron oxide, azo, phthalocyanine,
Examples include anthraquinone, indigo, triphenylmethane, and xanthan.

These colorants may be used alone or in a mixture of two or more. There are no particular restrictions on the amount of compounding.
Its range is wide, and it is usually used in the range of 1 to 50% by weight.

As the resin, an oil-soluble resin soluble in an organic solvent is used, similar to the colorant. For example, rosin, ester gum, rosin derivatives such as rosin-modified maleic acid resin, ketone resin,
Examples include phenol resin, acrylic/styrene resin, styrene maleic acid resin, and the like. It may be in a solvent state or an emulsion state. In this case as well, there is no particular restriction on the blending amount, and it is usually used in the range of 1 to 30% by weight in the ink composition.

Examples of organic solvents include lower aliphatic alcohols such as methanol and ethanol, esters such as methyl acetate and ethyl acetate, glycol ethers such as methyl cellosolve, ethyl cellosolve, and propylene glycol monomethyl ether, and ketones such as acetone and MEK. Organic solvents can be used, and the amount used is in the range of 20 to 98% by weight in the ink composition.

Regarding carboxylated polyoxyethylene alkyl ether, which is an additive, (general formula) R-0 (CH.CH, O),
, C H , G O O M (in the formula, n is a natural number of 1 to 20, R is an alkyl group of C1 to C I 6, M is an H atom, a metal atom such as Na or K, or ammonium or an alkanolamine) ) and are used to improve the fixation of handwriting, such as carboxylated trioxyethylene lauryl ether and carboxylated hexaoxyethylene ethyl ether. The amount added varies depending on the amount of colorant and resin, but 0.5
~7% by weight is preferred. Addition of more than this has the opposite effect and worsens the fixing properties.

In addition to the above-mentioned essential components, the composition of the present invention may contain other additives commonly used in oil-based inks, such as viscosity modifiers,
It is also possible to add plasticizers, dispersants, etc. as necessary.

[Effect 1: When writing with a permanent marker on a non-absorbing surface such as glass, metal, resin, etc., the handwriting has poor fixation and is erased by rubbing cloth, paper, etc., but the carboxylation of the present invention When ink containing polyoxyethylene alkyl ether is used, the resin or writing surface is modified, so that the adsorption between the resin and the non-absorbent surface becomes stronger, and when writing on a non-absorbent surface, the handwriting will not be rubbed off. It will not be erased even if it is washed away,
Improves the fixing properties of oil-based markers.

[Example] Examples of the present invention will be compared with comparative examples to explain their features. Note that (parts) indicates parts by weight.

Resin/Marquid 34 (Arakawa Chemical Industry Co., Ltd.) Solvent
・Isopropyl alcohol additive ・C,H,,-0-(04,CH,O). -C
I{, COONa5 〃 34 II l n Solvent・Ethyl cellosolve 83〃・Benzyl alcohol l 〃 Additive - C, H, -0-(CI, CI, 0),. −
CII, COOHl u Solvent ・Xylene additive ・C, H, 1 (1-(CH, C}+, O)
1 (M, COOK resin ・Malquid 34 (manufactured by Arakawa Chemical Industries (+'1) solvent ・Isobrobyl alcohol comparison 1-2- 80 (parts) 5 〃 5 n 85 〃 Handwriting [η adhesion An evaluation test was conducted.The results are shown in the table below.

The adhesion evaluation test conducted here was performed by writing on a non-absorbing surface that had been cleaned with methanol, leaving it at room temperature for 1[] (24 hours), then rubbing it with a cotton swab until the non-absorbing surface was exposed. Evaluated by number of times.

Surface solvent: ethyl cellosolve, benzyl alcohol 84 l Solvent: xylene 85 The oil-based marker ink of each of the above examples and the oil-based marker ink of the comparative example were applied to glass, metal, and resin plates. Good, △ is slightly inferior, × is inferior [Effect of the invention] Also in the above evaluation test results, the oil-based marker ink according to the present invention (Example 1, Example 2, Example 3) was good for glass,
Good or particularly good results were obtained for the adhesion of handwriting written on metals and resins, and it is superior to inks that do not contain carboxylated polyoxyethylene alkyl ether as compared additives.

The oil-based marker ink of the present invention improves the consistency of handwriting on a non-absorbing surface, and has the effect that even when handwriting on a non-absorbing surface is rubbed, it does not fade and the initial handwriting can be maintained.

Claims (1)

[Scope of Claims] An oil-based marker ink characterized by containing at least a carboxylated polyoxyethylene alkyl ether represented by the following general formula as an additive in a colorant, a resin, and an organic solvent. (General formula) R-O-(CH_2CH_2O)_nCH_2COOM
In the formula, n is a natural number from 1 to 20, R represents an alkyl group of C_2 to C_2_0, and M represents an H atom, a metal atom such as Na or K, or ammonium or an alkanolamine.