JPS58163790A - Fancy color dyeing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dyeing fibers and textile products, and in particular to a method for dyeing fabrics with a fading color.

It is generally known that in clothing such as kimono and clothes, the hue under incandescent light differs slightly from the hue under fluorescent light, which has a different spectrum), and this has been considered an undesirable phenomenon. . On the contrary, the present invention actively utilizes this phenomenon, and rather emphasizes it even more and attempts to significantly change the hue depending on the type of illumination lamp. This means that the impression given by the same clothing through colors or patterns using a combination of colors will change completely depending on the light source, increasing the aesthetic value of the clothing and enriching its design effects. This invention was arrived at as a result of various studies from the above point of view.
It was discovered that the change in hue due to the type of light source becomes extremely noticeable by coexisting with pigments such as dyes or pigments, and this invention was completed based on this knowledge.

That is, the present invention provides a dyeing method characterized by making a dye and neodymium sesquioxide coexist on a fabric, and fixing the neodymium sesquioxide on the fabric.

Neodymium (Arashi), a rare earth element of the lanthanum series, has 3
The chemical compound is stable, and neodymium sesquioxide (Nd, O,)
It is known that neodymium oxide (hereinafter abbreviated as neodymium oxide) strongly absorbs yellow light. Neodymium oxide itself appears blue under fluorescent lights that contain ultraviolet light, but turns reddish-purple under incandescent lights and sunlight.

The solubility line of neodymium oxide in water is very small, 100
About Q2mg L of cold water is soluble, but the solubility of the acid in aqueous solution is relatively large. In this invention, this property can be utilized.◇If a fabric, etc. is treated with an acidic aqueous solution of neodymium oxide and then neutralized with an alkaline solution, neodymium oxide is precipitated on the surface of the fabric and within the fiber structure in the center. It can be fixed.

The above treatment is preferably carried out before the dyeing process, but if the dye and the fabric have good chemical resistance, it may be carried out simultaneously with or after the dyeing. The method of the invention is also particularly suitable for plain dyeing by dip dyeing.

However, even in the case of textile printing, the above-mentioned changing color effect can be imparted to the entire fabric in a similar manner.

If you want to apply this method to only a part of the color that makes up the pattern, make the printing paste of that color moderately acidic, dissolve neodymium oxide in it, and neutralize it after steaming or dry-heating. do it.

Of course, this invention can be carried out regardless of the type of fibers, dyes, or pigments that make up the fabric.
In short, if the dye and neodymium oxide coexist, K
Therefore, the above-mentioned color changing effect can be obtained. For example, the coexistence of yellow dyes or pigments with neodymium oxide produces a brownish effect that is gray under incandescent light and green under fluorescent light; A polychromatic effect can be obtained: red under a light and purple when exposed to fluorescent light.

It goes without saying that the present method can also be applied to fabrics using pigments in the case of textile printing and fabrics using fibers in which a Kg agent is dispersed within the fiber structure during the synthetic fiber manufacturing process. Furthermore, as another modification of the present invention, there is a method of making neodymium oxide adhere to and fixing the surface of the destained fabric or clothing by resin treatment.

The coexistence ratio of the dyes and pigments and neodymium oxide is a dream that should be appropriately designed depending on the strength of the desired color change effect, and therefore, the present invention does not impose any limitations on this.

Examples will be explained below.Example 1゜Habutae was used as a silk fabric, and this sample cloth was placed in a 101 sulfuric acid aqueous solution containing neodymium oxide at a concentration of 5% for about 2 hours.
1 part was immersed. After dehydration, it was neutralized with 5 g of caustic soda aqueous solution, washed and dried. Add 2% of the pink acidic dye to the above sample, dissolve it to 25 times the bath ratio, and heat at 85°C.
45 m1n was stained with .

The sample, which was water dyed and dried after dyeing, exhibited a red color under an incandescent lamp and a purple color under a fluorescent lamp.

Example 2 A nylon tack sample having a warp and weft of 50 deniers, a warp density of 15 keys, and a weft density of 10,514 inches was dyed with a yellow reactive dye. On the other hand, fine powder of neodymium oxide is uniformly dispersed in the resin liquid for melamine resin processing.
9. Hard finish the sample fabric after dyeing and drying. The dye was 1.5% based on the fiber, and the neodymium oxide was the same (0.296%).The above sample after resin processing had a mouse color under an incandescent lamp, and a green color under a fluorescent lamp. .

Claims (1)

[Scope of Claims] 1. A method for dyeing fibers and textile products in a false color, characterized by allowing a dye and neodymium sesquioxide to coexist on a fabric φ, and fixing a kernel of neodymium sesquioxide on the surface of the fabric. 2. Treat the cloth with an acidic aqueous solution of neodymium sesquioxide,
A method for color changing dyeing of fibers and textile products according to claim 1, which comprises fixing by neutralization, washing, and then dyeing according to a conventional method. 3. Color-change dyeing of fibers and textile products according to claim 1, which is dyed by a conventional method and then processed with a resin solution containing fine powder of neodymium sesquioxide and fixed with K. Method.