JPS63223078A - Perfume-containing aqueous ink - Google Patents

Abstract

PURPOSE:To obtain the titled ink emitting slight fragrance in writing, providing clear holograph without running on paper, by blending perfume with maltosylcyclodextrin, a colorant and water. CONSTITUTION:(A) Perfume [e.g. phenylethylalcohol (rose P)] is blended with (B) maltosylcyclodextrin, (C) a colorant (e.g. water-soluble dye or water- dispersible processing pigment) and (D) water. Preferably the perfume is included in maltosylcyclodextrin and used. The amounts of these components used are preferably 0.05-2wt.%, component A, 1-5wt.% component B and 0.3-10wt.% component C.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a perfumed water-based ink, and more specifically,
To provide a fragranced water-based ink that can be used for dip pens, glass pens, water-based ballpoint pens, water-based felt-tip pens, etc., emitting a faint fragrance when writing, and allowing clear handwriting to be obtained without blurring the paper surface.

(Prior Art) Until now, oil-based ballpoint pen inks containing fragrances have been known, but water-based inks containing fragrances have hardly been known.

However, water-based ink with a rose scent is known as an exception.

This rose-scented water-based ink uses "rose water" obtained by soaking rose petals in purified water as the solvent component of the water-based ink, and the surface tension of this "rose water" is equal to the surface tension of the paper. It is high enough to prevent smudging, so water-based ink using this ink has a rose scent and a suitable writing feel.

(Problem to be solved by the invention) However, in order to obtain ink with other fragrances, it is generally necessary to use fragrances, and the method of adding fragrances to ink is to add the fragrance itself to water-based ink. Otherwise, there was no choice but to use a surfactant in combination to solubilize it. With these methods, the fragrance separates from the ink, or even if it becomes solubilized, it significantly lowers the surface tension of the ink, causing the paper surface to bleed when writing, so it is difficult to obtain a practical ink. I couldn't.

(Means for Solving the Problems) According to the present invention, when preparing a perfumed water-based ink, it is not necessary to use a special perfume such as "rose water", and it is not necessary to use a special perfume such as "rose water". In addition, fragranced water-based inks can be easily and inexpensively used without using materials that lower the surface tension of the ink, and without being restricted by the physical properties of the types of fragrances, and by freely using various fragrances. can be obtained.

That is, the present invention is a water-based ink suitably blending a fragrance and maltosylcyclodextrin (hereinafter referred to as MCD). It is a method that easily makes non-aqueous fragrances, essential oils, etc. water-soluble by adding it to water-based ink, and does not cause a drop in the surface tension of the ink.
As a result, the ink is characterized by being able to produce handwriting without smearing when writing on paper.

(Function) By using MCD, the water-based ink of the present invention maintains the surface tension at 40 to 50 dyne/cs+.
It can contain a high concentration of fragrance, and when you write, it emits a fragrance, and it also has the effect of leaving a faint fragrance in the handwriting.The reason for this is not clear, but it is due to the inclusion effect of MCD. Estimating from this, it seems to be as follows.

That is, MCD acts as a so-called host and encapsulates the guest fragrance or fragrance essential oil in its own inclusion structure.Therefore, the fragrance does not accumulate on the interface (surface) of the ink, so the surface tension of the ink does not decrease, and when writing, The clathrate structure is partially destroyed and the fragrance dissipates, resulting in a scent.The reason why the scent remains in handwriting is because the clathrate compound is gradually destroyed by the evaporation of the ink solvent over time. As a result of the dispersion, it probably gives the impression that the scent remains in the handwriting.

(Structure of the invention) Next, the components used in the present invention will be explained in detail.

As the colorant, water-soluble dyes, water-dispersible processed pigments, and the like can be used arbitrarily.

For example, tartrazine (C, 1, Acjd Yellow
ow23).

Sunscent Yellow (C, Summer, Pood Yetiow
3L Eosin CC, 1, Ac1d Red 87),
Phloxin (C, 1, Acjd Red 18), New Coccin (C, 1, Acjd Red 92), Sea Eye, Food Green 3 (C, 1, Food Gree
n 3) + Brilliant Blue (Jin 1.Ac1d B
lue 9L acid bioleft (C, 1, Acjd
Acidic dyes such as Violet 49), C.I., Direct Bla 19 (C, 1, Direct Bla
ck 19), C.I., Direct Blank 38 (C
, 1, Direct Black 38) + Sea Eye, Direct Blue 86 (C, 1, Direct Blue
86), direct dyes such as C, A, Basic Yellow 35 (C, r, Ba5jc Yellow 3
5), Sea Eye, Basic Red 2 (C, 1, Ba5
ic Red2), C, Basic Violet L (C, 1, Ba5ic Violet IL
Sea eye, basic blue? (C, f, Ba5ic
There are basic dyes such as Blue 7).

Further, a processed pigment in which a carbon blank pigment is suitably dispersed in water, or a processed pigment in which a colored pigment is suitably dispersed in water can also be used.

The amount of these colorants used is 0.1% of the total ink weight.
wt% to 15 wt%, preferably 0.3 Ht% to 10
@t%.

Next, in the present invention, MCD is an essential material used to suitably solubilize the fragrance into the water-based ink, and this material can be obtained as follows.

That is, MCD is produced using cyclodextrin (hereinafter referred to as CD) and maltose as raw materials, and by a method of efficiently binding maltose to CD using the enzyme pullulanase.

Its components are: MCD is 50wt% or more, all CDs are 80w
L% or more, in which the weight ratio of α, β, and T is 6:
The ratio is 3:1. Although existing CDs had the disadvantage of being difficult to dissolve in water, MCDs produced by this maltosylation become very easily soluble in water.

It has high solubility in water and also high solubility in various organic solvents. This is also the reason why it can include a wide variety of fragrances. Although the MCD is a powder, it is used after being dissolved in water before inclusion of a fragrance. This MCD is easy to handle if it is made into an aqueous solution with a solid content of about 70%.
A necessary fragrance is preliminarily included in an aqueous solution of MCD and used in the ink, and the amount of MCD used is 0.5 wt% to 10 wt%, preferably 1 wt% to 5 wt%.

The fragrance used in the present invention is as listed below.

1) Grapefruit oil, orange oil, lemon oil.

Essential oils such as lime oil, puffer fish oil, cassia oil, clove oil, geranium oil, lavender oil, bergamot oil 2) Hexyl alcohol, phenylethyl alcohol (
low; cp>, furfuryl alcohol, cyclotene,
Eugenol (clove oil), geraniol, maltol, ethyl maltol, nerol.

Alcohols such as linalool 3) Aldehydes such as CI4 aldehyde, 016 aldehyde, CI8 aldehyde, benzaldehyde, geranyl acetate, citral, furfural 4) Ethyl acetoacetate, propyl acetate, amyl acetate, linalyl acetate, benzyl acetate, dimethylbenzyl carbinyl Esters such as acetate, benzyl propionate, ethyl butyrate, amyl butyrate, stilaryl isobutyrate, benzyl benzoate, ethyl cinnamate, methyl anthranilate, amyl caproate, diethyl malonate, etc. 5) Nootkatone, ethyl These include aromatic compounds such as pyrazine, lemon turpenless, orange turpenless, vanillin, ethyl vanillin, furfuryl mercaptan, borneol, and heliotrobin.

These may be used alone or in combination to form a suitable blended fragrance, which is included in the above MCD at an amount of 5 to 1 out%, and the amount of the fragrance is 0.01 to 5 wt%, preferably 0.05 to 2 wt%, based on the total amount of the ink. It may be added within this range.

Here are some examples of mixed fragrances.

Formulation example-1 (rose fragrance) phenylethyl alcohol Geraniol Nellore geranium oil geranyl acetate A rose fragrance is made by suitably blending the following.

Formulation example-2 (lavender fragrance) lavender oil linalyl acetate linalool bergamotu oil A lavender fragrance is created by suitably blending the ingredients.

Naturally, the perfumed aqueous ink of the present invention uses water as the main solvent.

Distilled water or ion-exchanged water is 40 to 99% of the total amount of ink.
．． 5 wt% is used.

As the solvent outside the waterside, a water-miscible organic solvent can also be used. Examples of this include glycols such as ethyl glycol, propylene glycol, and diethylene glycol; glycol ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, and propylene glycol monomethyl ether;
Glycerin, 1,3,5. Pentatriol, triethanolamine, etc. can be used.

These may be used alone or in combination of two or more.

The amount used is 0.1-30-t%, preferably 0.5-20-L% in the ink.

In addition, surfactants, preservatives, rust preventives, humectants, etc. can also be used as necessary. However, when using surfactants, etc., it is necessary to be careful not to reduce the surface tension of the ink.

Next, the method for manufacturing the ink of the present invention will be briefly explained.

The water-based ink of the present invention can be prepared by adding an appropriate amount of a coloring agent to a solvent such as water or an organic solvent, sufficiently dissolving this with a stirrer, etc., and then dropping an appropriate amount of a specified fragrance included in an aqueous solution of MCD. can be easily obtained.

(Example) The present invention will be explained in more detail with reference to Examples below. In addition, the number of parts in the examples indicates parts by weight.

Example-1 By adding (1) to (2) and thoroughly stirring, a slightly milky-white clathrate compound A is obtained.

Mix the ingredients of ■■■ and heat to 40 to 50℃ while stirring for about 3
Red ink base B is obtained in minutes. For this B solution, the above A
The liquid is added dropwise while stirring to obtain a water-based ink that emits a rose scent. The surface tension of this ink is 50.0 dyne/a
The pH was 6.6 and the viscosity was 1.6 cps.

Comparative Example-1 Instead of 9 parts of MCDo in Example-1, surfactant N
An ink containing a rose fragrance was obtained in exactly the same manner as in Example 1, except that 0.4 part of P-18TX (Nikko'r manufactured by Mika JLI's Co., Ltd.) and the remaining 0.5 parts were water. The ink had a surface tension of 32.1 dyne/cm, an SpH of 6.6, and a viscosity of 1.4 cps.

Example-2 Add (1) to (2) and stir thoroughly to obtain a milky white clathrate compound A.

Mix the ingredients of ■■■■, heat and stir at 40 to 50℃,
After 30 minutes, a reddish-purple ink base B is obtained.

By dropping the above-mentioned liquid A into this liquid B while stirring, a water-based ink that emits a lavender scent is obtained.

The surface tension of this cool material is 46.2dyne/cs+%
pH is 5.74, viscosity is 1.35 CPS (25℃
)Met.

Comparative Example-2 The same procedure was repeated except that 0.1 part of the surfactant Neugen P (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) was used instead of 9 parts of MCDo in Example-2, and water was used for the remaining 0.7 parts. A water-based ink containing lavender fragrance was obtained. The surface tension of the ink is 33.4dy
The resulting ink had a ne/cm2, I)H of 6.8, and a viscosity of 1.3 CPS.

Comparative Example-3 0.9 parts of β-CD (cyclodextrin) was used in place of 0.9 parts of MCD (70% solids aqueous solution) of component (1) in Example-1, and the rest was as in Example-1. I tried to obtain a water-based ink containing fragrance by using exactly the same ingredients.

However, β-CD has a lower water solubility than MCD, with a water solubility of 1.8 g/100*t after dissolution.
It is not possible to obtain an aqueous solution with a solid content of 70%, such as 1
．． An attempt was made to include a rose fragrance in this 1.8% β-CD solution, which only yielded an 8% aqueous solution, but fragrance 1 was obtained.
%, and in the end it was not possible to add fragrance to this aqueous ink without separating it.

(Effects of the Invention) When the ink of Example 1 was written on a paper surface with a glass pen, it was possible to write clear characters with no smearing while emitting a faint rose-like fragrance, and there was no bleed-through.

The number of characters that could be written with one ink application to a glass pen was 300.

On the other hand, when the ink of Comparative Example 1 was written on paper with a glass pen, it gave off a faint rose-like scent, but the scent was weak and the ink bleed through (bleed through).

One ink transfer to a glass pen requires at most 120 ink.
It was just a letter.

When the ink of Example 2 was applied to a glass pen and written on paper, a lavender-like scent was emitted, and the ink did not bleed or bleed through the paper.

Also, I was able to write 250 characters with one ink transfer to a glass pen.

When I applied the ink of Comparative Example 2 to a glass pen and wrote on it, it smeared on the paper and caused some bleed through. Also,
The scent of lavender is light, and it is 100% ink with one ink application.
I could only write the digits.

Patent applicant Tombow Pencil Co., Ltd. Representative company Kohei Ogawa

Claims (1)

[Claims] A fragranced water-based ink containing a fragrance, maltosylcyclodextrin, a coloring agent, and water.