JPH0435Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention relates to a solid dye that exhibits the same color as the color to be colored.

b. Prior Art Various powder dyes are used alone or in appropriate combinations for dyeing cloth, plastic, etc.
As dyes, acid dyes, disperse dyes, direct dyes, basic dyes and other dyes are used.

When dyeing with such dyes,
The actual dyed color and the color of the powdered dye used do not match, and if the color name and color number are not displayed on the dyeing container, mistakes are likely to occur, and the powdered dye is weighed for color mixing. In addition to being time-consuming, there were also problems such as the dye scattering. In order to solve these problems, the inventors first provided a solid dye that exhibits the same color as the color on the object to be colored.

C. Problems that the invention aims to solve In order to dye cloth, plastic, etc. using the solid dye mentioned above, first, heat an open vat (bowl, pot, etc.) filled with water to bring the water to a specified temperature. Add a certain amount of solid dye to it while it is on fire. When the solid dye is dissolved, a predetermined amount of auxiliary agent is added and stirred. After the auxiliary agent is completely dissolved, the wet object to be dyed is immersed in the hot water and stirred. After a certain period of time has passed, the dyed object is removed from the hot water, washed with water, and then subjected to appropriate post-treatment to prevent color fading.

In this way, when dyeing using the solid dye, it is necessary to use an auxiliary agent. As for this auxiliary agent, it is necessary to use acid in the case of acid dyes, carrier in the case of disperse dyes, and salt in the case of direct dyes, and the amount used and timing of addition must be considered. Furthermore, the auxiliary agents are used as leveling agents, softening agents, mordants, activators, foaming agents, etc., depending on the purpose. Even though such convenient solid dyes were provided, there was a problem in that the method of using auxiliary agents was complicated.

d. Means for Solving the Problems The present invention has been made in view of the above-mentioned circumstances, and aims to provide a solid dye that solves the above-mentioned problems.

That is, the present invention provides a colored layer on the surface of a solidified dye, and in a solid dye in which the colored layer has the same color as the color developed on the object to be colored by the dye, there is a gap between the colored layer and the core dye. The above problem was solved by providing a solid dye characterized by providing an intermediate layer containing a dyeing aid.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an enlarged cross section of the solid dye according to the present invention, where 1 is a granulated dye, 2 is an intermediate layer provided on the surface of the granulated dye 1, and 3 is a colored layer provided on the surface of the intermediate layer 2. It is.

Granulated dye 1 is a commonly used acid dye,
Disperse dyes, direct dyes, basic dyes and other dyes are used.

In order to solidify the dye, the powdered dye is compacted or mixed with an appropriate water-soluble binder (granulating agent) that does not affect the dyeing to give it a predetermined shape. Also, other suitable shaping methods may be employed. As the binder, for example, cellulose sodium glycolate (CMC), hydroxypropyl cellulose (HPC), etc. are used, and these are selected in an appropriate ratio depending on the type of dye, hardness when solidified, size, etc. be done.

Examples of solid dye shapes include spheres, circles,
Square, cubic, disc-shaped, and other arbitrary shapes can be adopted. Further, the size is from 2 mm to several mm in diameter, and it can be formed smaller or larger as necessary.

The intermediate layer 2 is formed on the surface of the granulated dye 1 serving as the nucleus, and uses a material that hides the color of the granulated dye 1, and also contains an auxiliary agent used depending on the type of the granulated dye. . A binder is also used to harden it.

That is, titanium oxide (TiO ₂ ), sugar, lactose, or the like is used as a hiding material, and the thickness is adjusted depending on the type of granulated dye 1.

Further, as the auxiliary agent used, the following ones are used corresponding to the granulated dye 1. In other words, in the case of acid dyes,
For example, use powdered citric acid, and in the case of disperse dyes, use a dispersant (powdered Neoton, manufactured by Yamakawa Pharmaceutical Co., Ltd.).
In the case of direct dyes, for example, salts are used.

The ratio of auxiliary agents used varies depending on the dye used, but it is 10~
It is 30%.

Further, as the binder, for example, an aqueous solution of 6% hydroxypropyl cellulose is used.

The colored layer 3 is a layer coated on the surface of the intermediate layer 2, as in a general sugar-coated tablet, for example, and the color of this colored layer 3 is obtained by dyeing the object to be colored using the granulated dye 1 serving as the core. The color should be the same as the color that develops on the object to be colored. This colored layer 3 uses polyvinyl alcohol (PVA) as a coloring agent such as dye or pigment.
It is formed by coating the intermediate layer 2 with a water-soluble resin such as or Poval (trade name), gelatin, CMC, starch, etc., or a mixture thereof.

Note that the coloring agent forming the colored layer 3 must not interfere with the dyeing with the granulated dye 1, as a matter of course.

Alternatively, the colored layer 3 can be formed by dissolving the same dye as the granulated dye 1 to develop color, and applying this to the granulated dye 1.

e Function This solid dye is used in the following manner. First, the open pot is heated to boil water, and when it reaches a predetermined temperature, the required amount of solid dye is selected based on the number of dyed pieces and added. In addition, in the case of mixed colors, the ratio of the number of solid dyes of a single color is selected depending on the type of color, density, etc. Usually 50
Dissolve in ~60℃ hot water for 3-5 minutes.

Next, place the wet object to be dyed in hot water and gradually raise the temperature while stirring to a predetermined temperature (for example, 80°C).
~90℃) for a specified period of time (for example, about 30 minutes). After washing the dyed object with water, apply an appropriate color fixing agent.

f Examples Examples () a Granulated dye Nonpareil (trade name; manufactured by Freund) 450 g,
Acid dye Kayanol Milling Green GW3700
g, 300 g of lactose, and a binder diluted to 6% with water (water-soluble binder) are added and granulated.

b. Intermediate Layer 1850 g of the core produced from the above granulated dye is covered with 300 g of powdered citric acid, 500 g of lactose, and 100 g of 6% polyethylene glycol as a binder to form an intermediate layer.

c Colored layer The same dye as the granulated dye was dissolved in water, and the surface of the intermediate layer was coated with this solution to form a colored layer.

Example () a Granulation 1 500g of non-panel as a core was put into a granulator,
Spray hydroxypropyl cellulose diluted to 6% with water from a spray gun and use 1000g of Kayalon Polyester Blue EBL-E (manufactured by Nippon Kayaku) and Neoton 2500 as dyes while wetting the non-panel.
g is attached and granulated. Then lactose 300 as well
g is attached, and after granulation is completed, it is dried.

b Granulation 2 Pour 2000g of granules made in Granulation 1 into the granulator,
Spray hydroxypropyl cellulose diluted to 6% with water from a spray gun, and while wetting the grains, attach 2500 g of lactose and 500 g of neoton.After finishing,
Dry and form grains.

c Colored Coating Dissolve 1 g of the above dye in 2 parts of water and 250 g of polyethylene glycol to prepare a coating solution.
A predetermined amount of this coating liquid is sprayed onto the particles produced in the granulation step 2 using a spray gun while heating the particles to about 50° C., and then dried and cooled.

g. Effects of the invention According to the solid dye according to the invention, the intermediate layer of the solid dye contains an auxiliary agent corresponding to the type of the granulated dye that is the core of the solid dye. Thus, there is no need to select the type and amount of auxiliary agents depending on the type, making dyeing extremely easy.

In addition, the auxiliary agent can prevent the dye, which tends to react, from deteriorating in quality. Therefore, the service life in terms of quality is also improved.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of the solid dye according to the present invention. 1... Granulated dye, 2... Intermediate layer, 3... Colored layer.

Claims (1)

[Scope of utility model registration request] In solid dyes, a colored layer is provided on the surface of the solidified dye, and the colored layer has the same color as the color developed on the object to be colored by the dye, and a dyeing aid is provided between the colored layer and the core dye. A solid dye characterized by having an intermediate layer containing.