JPS6385178A - Polyester fiber cloth made opaque and its production - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an opacified polyester fiber fabric with excellent infiltration properties that is useful in the field of textiles for clothing, and a method for producing the same.

[Conventional technology]

It has been known that metal oxides such as titanium dioxide can be applied to t-m textile fabrics to impart opacity to the fabrics.

For example, (2) a method in which titanium dioxide is deposited on the fibers together with a binder; (2) a method in which titanium dioxide is deposited on the fibers together with a binder; (3) A method is known in which the aqueous dispersion of titanium dioxide is made acidic, the temperature is increased, the fibers are treated, the titanium dioxide is exhausted by the fibers, and the fibers are heated.

[The gap that the invention attempts to solve]

However, method No. 1 has poor washing durability, and the treatment process is complicated, making it easy for titanium dioxide to adhere to spots. Method No. 21 has difficulty uniformly dispersing titanium dioxide into the binder, and It is difficult to prepare, and the texture of the resulting fabric is easily damaged.Furthermore, although the method of (31) does not impair the texture of the fabric obtained, there is a limit to the effect of washing resistance of fabrics coated with titanium dioxide. be.

The present invention solves the problems caused by the prior art, and provides an opaque polyester fiber fabric that has sufficient opacity and excellent durability without impairing the feel of the fabric, and a method for producing the same. be.

[Means for solving problems]

The present invention is.

An opaque polyester fiber fabric in which titanium dioxide is attached to the surface of a fabric made of polyester fibers, and the surface of the fabric is composited with a thin film of polyester resin, and titanium dioxide is attached to the polyester fiber fabric. Thereafter, a water-soluble or water-dispersible polyester resin is applied to the fiber fabric and heated.

The present invention uses a polyester resin that has excellent affinity with polyester fibers as a resin that forms a strong film on polyester fibers to which titanium dioxide is attached in order to improve the durability without impairing the texture of polyester fiber fabrics. By treating the titanium dioxide particles with polyester resin, the titanium dioxide particles are located in the resin film formed of polyester resin or between the resin film and the fibers, and the resin film may be used to bond titanium dioxide and polyester fibers. This is based on having excellent selective adhesion.

The titanium dioxide used in the present invention may be either anatase type or rutile type, and may be surface-treated with a substance such as alumina or silica.

Average particle diameter t' of titanium dioxide; tG, 1 to 0.7 μm
1. Preferably, the particle size is within the range of 0.14 to 0.4 μm in order to obtain sufficient opacity.

Although the opacity effect does not change much when the amount of titanium dioxide deposited exceeds iX relative to the fiber weight,
It is disadvantageous in terms of durability and cost.

The method for attaching titanium dioxide to polyester fibers is not particularly limited, but it is preferably applied to the fabric by dipping, padding, spraying, or the like. During this adhesion treatment, in order to completely improve the dispersibility of titanium dioxide in the treatment solution, it is preferable to apply the aqueous dispersion of titanium dioxide in an acidic state. It is preferable that the fibers in the inner layer are also attached, but it is necessary that the fibers be attached at least to the fibers in the surface layer of the fabric.

The polyester resin used to form a thin film of resin on the surface of the polyester fiber to which titanium dioxide is attached includes at least one dicarboxylic acid or a condensable derivative of dicarboxylic acid, at least one diol, and an aromatic nucleus. A water-soluble or water-dispersible polyester resin having an acid value of 1 to 2o obtained by polycondensing a dicarboxylic acid or diol having a -803M group (where M represents hydrogen or a metal atom) is preferably used.

Dicarboxylic acids or condensable derivatives of dicarboxylic acids that are components of the polyester resin include aliphatic,
Alicyclic or aromatic dicarboxylic acids and their derivatives, such as oxalic acid, malonic acid, succinic acid, adipic acid, trimethyladipic acid, 2,2-dimethylglutaric acid, azelaic acid, fumaric acid, maleic acid, itacone acid, 1
, 4-cyclohexanedicarboxylic acid, 7-talic acid, terephthalic acid, isophthalic acid and filtrate 1. (7) Acid anhydrides or alkyl esters such as methyl, ethylglobil 1, and butyl.

In addition, examples of the diol include pentadiol, hexadiol, diethylene glycol, Schiff'o pyrene glycol, triethylene glycol, polyoxyethylene glycol, bis-(4-hydroxybutyl) ether, 1,
Examples include dicyclohexane in 4-dihydro, 1,3 bis(hydroxymethyl, )cyclohexane, and the like.

Examples of dicarboxylic acids having -So and M groups bonded to an aromatic nucleus include sulfoterephthalic acid, sulfoterephthalic acid, sulfophthalic acid, and 4-sulfonaphthalene-2,7-
Examples include sodium salts of dicarboxylic acids.

The polyester resin used in the present invention can be prepared by heating these dicarboxylic acid components and diol components in an inert gas atmosphere to cause an esterification or transesterification reaction, and then polycondensing them under reduced pressure.

The processing method for obtaining the opacified polyester fiber fabric of the present invention is to pad the polyester fiber fabric to which titanium dioxide has been added in a water-soluble or water-dispersible polyester resin solution, and then dry it at 8L)-120G.
A method of heat treatment at 81C is preferably used.

The weight of the IJ ester resin is preferably in the range of 0.2 to 5% by weight based on the polyester fiber fabric, and if it is less than 0.2% by weight, the binder effect will be weak and the durability effect of titanium dioxide will be poor. .

Moreover, if it exceeds 5% by weight, the feel of the fabric becomes rough and hard, which is not preferable for use in clothing.

In the present invention, an aminoplast resin, an epoxy compound, and an aziridine compound can also be added for the purpose of sufficiently reticulating the polyester resin. In addition, softeners, water and oil repellents, antistatic agents, fluorescent dyes, back flavoring dyes, etc., which are conventionally used in the improvement processing of textile products, are added to the treatment bath to the extent that they do not impair the effects of the present invention. It can also be used as

The polyester fibers used in the present invention are ordinary polyester fibers whose main component is polyethylene terephthalate, and modified polyester fibers copolymerized with other components to impart dyeability, yield, etc. Polyester fibers or natural fibers, It is applied in the form of knitted fabrics and non-woven fabrics by mixing with acetate fibers, rayon, acrylic fibers, etc. In the case of mixed use, it is preferable that the polyester fibers contain t-50% or more.

EXAMPLES] Hereinafter, the present invention will be explained with reference to examples. In addition, each evaluation method in Examples was performed by the following method.

(1) Opacity; Nippon Heavy Industries' colorimeter 2-1
Using 0010Pt-, the difference in the reflectance of the cloth with a white board and a blackboard as a background was determined by the ΔY value (reflectance of the cloth on the white board (Y value) - reflectance of the cloth on the blackboard (Y value)). The smaller the ΔY value, the more opaque it is.

(2) Washing test; JIS L-02171 (1
976) Washing γU was repeated 5 times, 10 times, and 20 times using the 103 method.

3) Friction test: Rubbed with a black-dyed cloth using a JISf-0849 Gakushin type tester and judged based on the contamination gray scale.

Example 1 Titanium dioxide powder t-p with an average particle size of 0.148 μm
Add to +-15 acetic acid aqueous solution and mix thoroughly with homomixer 42
An aqueous dispersion of titanium dioxide having a sag/43 was prepared by stirring and used as a pad liquid.

Next, a butcher fabric (weather 300 (1/78r)) made of polyester filament tentatively twisted yarn was refined.
After heat setting, soak in the pad solution prepared earlier.
After squeezing with a pickup of 0X, it was dried at 120 t:' for 3 minutes, and the amount of titanium dioxide deposited on the fabric was 2.7% by weight.

Next, after immersing the above-mentioned processed cloth in a resin liquid consisting of the following composition,
After squeezing with 80% pick-up, it was dried at 130C and then subjected to dry heat treatment at 160tll' for 1 minute. At this time, the adhesion f of the polyester resin to the fabric was 0.5% by weight.

Resin liquid: Finetex GS-ASU 201/43 (Dainippon Inn Chemical Barrel Polyester Resin) Asahi Guard AG-
7102al/13 (Meiseika Toki fluorine water repellent) Oftex ICM 15:9/,
13 (Hodogayakaji ■ Soft water repellent) Mika White ATN cone 41
/, 8 (Mitsubishi Kasei Fluorescent Dye) The processed fabric was subjected to a washing test PA, and the amount of adhesion of titanium dioxide, opacity (ΔY value), and friction test were measured, and the results are shown in Table 1. I got it. It can be seen that the present invention has an excellent opacifying effect and durability.

Table 1 Example 2 Titanium dioxide powder with an average particle size of 0.233 μm was added to water and mixed optically with a homomixer to obtain a titanium dioxide concentration of 5.
An I/10 dispersion was prepared.

Next, a 7-aiyu fabric (warp so o (1/75f)) made of polyester filament tentatively twisted yarn was scoured, underbleached, and heat set, and then mixed with the above dispersion at a bath ratio of 1:3.
After soaking in a Wins dyeing machine at room temperature for 50 minutes at 0C, it was washed with water and dried at 120C for 3 minutes. At this time, the amount of titanium dioxide deposited on the fabric was 4.2% by weight.

Next, the above-mentioned processed cloth was treated with a polyester resin liquid in the same manner as in Example 1. In addition, as a comparative example, the washing durability of the titanium dioxide treated fabric was measured on a fabric that was subjected to dry heat treatment at 160G for 1 minute without any polyester resin treatment, and the results shown in the second example were obtained. Ta.

As is clear from Table 2, it can be seen that the opacity of both the present invention and the comparative example is significantly improved by adhering titanium dioxide compared to the untreated cloth. Furthermore, there is a significant difference in washing durability between the present invention and the comparative example, and it can be seen that the processed fabric treated with the present invention has less titanium dioxide falling off, and therefore has a high degree of opacity sustainability.

〔Effect of the invention〕

The opaque polyester fiber fabric of the present invention has excellent durability and can be used in a wide range of applications, including sports clothing.

Claims (1)

[Claims] 1. Opacification characterized in that titanium dioxide is attached to at least the surface layer of a fabric made of polyester fibers, and the surface of the fabric is coated with a thin film of polyester resin. Polyester fiber fabric. 2. A method for producing an opaque polyester fiber fabric, which comprises adhering titanium dioxide to a polyester fiber fabric, then applying a water-soluble or water-dispersible polyester resin to the fabric, and heating.