JPH0299668A - Method for deepening color and processing of fiber structure - Google Patents

Abstract

PURPOSE:To apply excellent color deepening effects to a colored fiber structure by applying a resin containing a silicone-based resin and a polyethylene glycol derivative in combination thereto and subjecting the resultant structure to low- temperature plasma treatment. CONSTITUTION:A resin containing a silicone-based resin, e.g., methylhydrogenpolysiloxane or dimethylpolysiloxane having amino or silanol groups, in an amount of 0.5-5% based on the fiber weight and a polyethylene glycol derivative in combination in an amount within the range of <=0.5% based on the fiber weight is applied to a colored fiber structure (e.g., polyester fiber dyed to black) and the resultant structure is then subjected to low-temperature plasma treatment. For example, compounds expressed by the formula (R1 is alkyl or alkylaryl; R2 is H or methyl; m and n are 3-30) are cited as the polyethylene glycol derivative.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a processing method for deep-coloring a colored fiber structure.

(Conventional technology) Generally, synthetic fibers have very smooth surfaces.

Is the reflection of light on the fiber surface thick? i4 colors, especially navy blue, black, etc., cannot provide depth of color. On the other hand, natural fibers
-Finally, the refractive index is lower than that of synthetic fibers.

Although it looks dark, 1) Fabrics with a smooth surface have a strong gloss on the fiber surface, similar to synthetic fibers, and appear whitish and lack depth of color.

Various attempts have been made to improve the depth of one color, and for example, the following deep color processing methods are known.

(A) A method in which colored synthetic fibers are coated with silicone resin and then treated in a low-temperature plasma atmosphere containing oxygen. A method of forming irregularities on the surface of fibers by plasma treatment (Japanese Patent Laid-Open No. 163471/1983).

(Problem to be solved by the invention) However, the above (B) JP-A-59-163471
The method described in the publication has problems with productivity and chalk marks (a whitening phenomenon that occurs when the surface of a dyed fiber structure is rubbed with a sharp object), and also does not have the characteristics of (A) above. The method described in Japanese Patent Publication No. 162865/1983 produces only a low degree of deep coloring, and now a greater darkening effect is required.

The present invention solves the problems of the prior art, and is aimed at: (2) producing a deep-colored colored fiber structure that can be deep-colored by post-treatment regardless of the type of the colored fiber structure; It provides a color processing method.

(Means for Solving the Problems) In order to solve the above problems, the present inventors have made extensive studies and found that by combining a silicone resin and a polyethylene glycol derivative, and combining this with low-temperature plasma treatment, an excellent deep The present invention was achieved by discovering that a color effect can be obtained.

That is, 2) the present invention is 1) a colored fiber structure;

The gist of this paper is a deep color processing method for fibrous structures, which is characterized by applying a resin consisting mainly of silicone resin in combination with a polyethylene glycol derivative and then subjecting it to low-temperature plasma treatment.

Hereinafter, one aspect of the present invention will be explained in detail.

In the present invention, colored fiber structures include natural fibers dyed with dyes, recycled fibers 1 synthetic fibers, and colored fibers mixed with pigments during production. Yarns such as so-called spun-dyed fibers, woven and knitted fabrics, and blends of these fibers.

Refers to fabrics with a mixed weave or knitted hat.

In the method of the present invention, as a first step, a resin liquid mainly composed of silicone resin and a polyethylene glycol derivative is applied to the above-mentioned colored fiber structure by a pad-dry method, and then dried. do.

Examples of the silicone resin used here include methylhydrodienepolysiloxane and dimethylpolysiloxane having an amino group or a silanol group as a functional group. For these, dill water emulsion resins, which are generally commercially available for processing fibers, can be used.

Examples of the polyethylene glycol derivative used in combination with the silicone resin include compounds shown in the following formulas (I) and (■).

(However, +R1 is an alkyl group or alkylaryl1
5. R2 represents hydrogen or a methyl group, R1 represents a divalent organic group, and m and n represent integers of 3 to 30. ) The amount of silicone resin to be used is 0.5 to 5% based on the weight of the fiber, and the optimum amount to be used is determined within this range depending on the colored fiber structure. The polyethylene glycol derivative has a content of 0.0% per fiber weight.
Use within a range of 5% or less. If you use more than this,
Care must be taken as there is a risk of a decrease in fastness. When particularly strong abrasion fastness is required, 0.
It is desirable that it be 2% or less.

The drying conditions may be those normally used in resin processing, and the optimum conditions are determined depending on the colored fiber structure used.

Next, in the second invention, as a second step, the fiber structure is subjected to low temperature plasma treatment.

Low-temperature plasma treatment refers to gas particles generated by glow discharge in a gas such as argon, nitrogen, oxygen, carbon/carbon oxide, or air under low pressure.

This means that the object to be processed is exposed to an atmosphere of non-equilibrium plasma that is in an ionized state and in an excited and activated state.

As a method for generating low-temperature plasma, a vacuum container containing a sample is evacuated and depressurized using a vacuum pump, and then a predetermined gas is introduced, and a temperature of 0.1 to 2. After adjusting the degree of vacuum to a certain degree within the OTorr range, a method is adopted in which electrical energy is applied to cause glow discharge.

The energy source at this time is DC voltage application.

Any method of applying an AC voltage may be used, but generally I
A high frequency of ~3000 MHz is used2
Usually the high frequency of 13.56MHz is 0.1~I W/an
A typical method is to apply with an output of t (electrode area). Also in the present invention, it is preferable to use the low-temperature plasma generated by the method described above.

The low-temperature plasma processing conditions in the present invention are not particularly limited; for example, a gas such as argon, air, nitrogen, or oxygen is used at a vacuum degree of 0.5 to 2.0 Torr.

13,56 Good results can be obtained by applying MtlzO high frequency at an output of 0.5 W/cnl and processing with plasma generated once for 30 seconds to 3 minutes.

(Function) The function of the above structure of the present invention can be considered as follows.

That is, the carbon-carbon double bond present at the end of the polyethylene glycol derivative of the compound represented by formula (1) or formula (II) causes a reaction while interacting with the silicone resin in a low-temperature plasma atmosphere, and is formed. It is thought that these compounds contribute to lowering the refractive index of the surface of the fiber structure.

In addition, the above reaction is thought to occur partly in the gas phase in a low-temperature plasma atmosphere, and the low refractive index substance formed in the gas phase covers the surface of the fiber structure, causing one surface Reflected light is reduced and an excellent deep color effect is achieved.

(Example) Next, the present invention will be explained by examples.

The performance of the samples in Examples was measured by the first method.

(1) L" value The L9 value was determined by measuring with a color difference meter CR-110 (manufactured by Minolta Camera ■). The smaller the L9 value, the better the bathochromic effect.

(2) Rubbing fastness Based on JIS L-0849, test the sample with cotton cloth under a pressure of 200 g using a friction tester ■ type (handheld type).
As a result of performing 00 reciprocating frictions, the degree of contamination that occurred on the cotton cloth was determined on a gray scale.

Examples 1-2 As a colored fiber structure, a polyester strong twist fabric dyed black (warp 110D/36F/2, number of twists S 1300T/M, density 70/2.54cm, weft 110D/36F /3 pieces, number of twists 51300T/M and Z1
300T/M is alternately implanted two by two, density 50/2.
54 cm, tissue georgette) was prepared.

This fabric was divided into two parts, dipped separately in the following resin solutions 1 and 2, and squeezed with a mangle (squeezing ratio 100).
%), and then dried for 2 minutes at 110°C using a pin tenter.

[Formulation 1] [Formulation 2] Boron MR 2% by weight Ultratex ESC 2% by weight Next, in the method of the present invention, low-temperature plasma treatment was performed under the following low-temperature plasma treatment conditions 1.

[Low temperature plasma processing conditions 1] Gas used: Oxygen gas flow rate: 200 mn/min Degree of vacuum: 0.7 Torr Output: 0.5 KW/cnl High frequency: 13.56 Ml1z Processing time: 30 seconds After this, with a pin tenter Heat treatment was performed at 150° C. for 30 seconds to obtain two deep-colored fabrics of the present invention (hereinafter referred to as Example 1 [Formulation 1] and Example 2 [Formulation 2], respectively).

For comparison with the present invention, a processed fabric for comparison (hereinafter referred to as a comparative example) was obtained in exactly the same manner as in Example 1, except that the following formulation 3 was used in place of the formulation in Example 9. .

[Formulation 3] Poron MR 2% by weight Ultratex ESC 2% by weight The performance of the processed fabrics of Example 1.2 and Comparative Example was measured, and the results are shown in Table 1.

Table 1 As is clear from Table 1, Examples 1 and 2 of the method of the present invention
It can be seen that this shows a very good bathochromic effect.

In addition, there was no problem with the fastness to rubbing, which is a concern when using polyethylene glycol derivatives, because the amount of polyethylene glycol derivatives used was 0.2% by weight or less.

(Effects of the Invention) The present invention utilizes the reactivity of polyethylene glycol derivatives in a low-temperature plasma atmosphere, and according to the method of the present invention, a two-colored fiber structure is produced which is much superior to the conventional method. It becomes possible to impart a deep coloring effect.

Patent applicant: Unikorikiki Co., Ltd.

Claims (1)

[Claims] (1) A deep color processing method for a fibrous structure, which is characterized in that a colored fibrous structure is coated with a resin consisting mainly of a silicone resin in combination with a polyethylene glycol derivative, and then subjected to low-temperature plasma treatment.