JPS61146877A - Antistatic, water and oil repellent treatment of fiber structure - 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 [Industrial Field of Application] The present invention relates to a method for anti-static, water- and oil-repellent treatment of textile structural articles, particularly washing and dry cleaning.

The present invention relates to an anti-static, water- and oil-repellent treatment method that has durability against surface abrasion.

[Conventional technology]

Various methods have been known as durable water- and oil-repellent treatment methods, including a method of treating fluorine-based compounds and silicone-based compounds simultaneously or separately. No. 57-154466, f
JP-A-58-208473, etc.) or a method of using a reactive resin in combination with a water-repellent resin (JP-A-58-208473, etc.)
5-76167, JP-A-55-84477, JP-A-57-149557, etc.).

In addition, water and oil repellent finishing agents are generally acrylate polymers having fluoroalkyl groups, but vinyl polymers, urethane compounds, epoxy compounds, triazine compounds, etc. having fluoroalkyl groups are also known. There are, but
In either case, the length of the carbon number is devised to maximize the function of the fluoroalkyl group, or substituents or compounds are added so that the fluoroalkyl group covers the fiber surface, or substituents or compounds are applied to the fiber. The aim is to improve the adhesion of the adhesive.

- Addition of silicone compounds tends to reduce oil repellency. If the fluoroalkyl group is lengthened to improve water and oil repellency, its properties will result in poor adhesion to the fibers, but on the other hand, additives or substituents can increase the adhesion to the fibers and improve durability. If you try to do so, the water and oil repellency tends to deteriorate.

Attempts to add controllability to water and oil repellency, which have the above-mentioned problems, are difficult because water repellent treatment is easily charged with static electricity (
Since flakes tend to be easily adsorbed, this method is commonly used.One method for this is to apply an antistatic agent and a water/oil repellent at the same time and heat treat it, but since the antistatic agent has hydrophilic properties, In addition, there is no satisfactory antistatic agent that does not reduce the water repellency, and the water and oil repellency is maintained even after 10 to 20 repeated washings or dry cleaning. In addition, conventional processing has a problem in that the durability of water and oil repellency is particularly poor against dry cleaning with charged soup, which is commonly performed. It has the problem that anionic and nonionic surfactants tend to adhere to it, resulting in a decrease in water repellency.

[Problem that the invention seeks to solve]

The present invention relates to textile structures such as threads and cloth KfII (J1E
The purpose of the present invention is to provide a treatment method that imparts antistatic, water and oil repellent properties, and has good durability even after repeated washing 10 to 20 times or dry cleaning.

[Means for solving problems]

In the present invention, a fluoroalkyl group-containing compound having thermoplasticity is applied to a fibrous structure, and then a dry heat treatment is performed at 40 to 230°C, followed by a hot water bath treatment at 30 to 140°C, and then an antistatic agent is applied. 5. A method for antistatic, water- and oil-repellent treatment of a fibrous structure product, characterized in that dry heat treatment is performed at 40 to 230°C.

A major feature of the present invention is that, unlike conventional methods in which the treatment after the attachment of the fluoroalkyl group-containing compound and the antistatic agent is completed with a simple heat treatment, the attachment of the fluoroalkyl group-containing compound is completed in the first stage of dry heat treatment. Among the fluoroalkyl group-containing compounds that adhere to the surface layer through hot water bath treatment, low molecular weight components and emulsifiers that are effective in adhesion but less effective in water and oil repellency are removed, and then antistatic agents are added. The antistatic agent may be coated with the antistatic agent by melting the remaining thermoplastic fluoroalkyl group-containing compound in a second dry heat treatment to form a strong film. That is, in the present invention, a highly adhesive component is attached to the adjacent portion of the fiber by one or more treatments, an antistatic agent is embedded in the middle layer,
A strong film is formed on the outermost layer using highly water- and oil-repellent components, resulting in effects such as anti-static properties and improved durability of water- and oil-repellency, which have never been achieved before.

In the present invention, the thermoplastic fluoroalkyl group-containing compound is (al) a vinyl monomer having a fluoroalkyl group having 1 to 30 carbon atoms and a homopolymer thereof.

Or a copolymer of these and a vinyl monoelectric material that does not contain fluorine.

(bl An ester of a monohydric or polyhydric alcohol containing a fluoroalkyl group having 3 to 20 carbon atoms and an optionally fluorinated monohydric or polyhydric carboxylic acid, or a polyester, an optionally fluorinated monohydric or monohydric or polyvalent carboxylic acid and noester having a fluoroalkyl group of 3 to 20;
Or polyester.

(cl Polyurethane of a monohydric or polyhydric alcohol containing a fluoroalkyl group having 3 to 20 carbon atoms and a monohydric or polyhydric incyanate.

(dl Homopolymers of epoxy compounds containing fluoroalkyl groups having 3 to 20 carbon atoms, and preferably copolymers with epoxy compounds that do not contain fluorine, such as propylene oxide or epichlorohydrin), which have a softening point. A thermoplastic fluoroalkyl group-containing compound having a temperature of 20 to 200°C is used.

If the softening point is less than 20°C, it will be sticky at room temperature and have poor water and oil repellency, and if it exceeds 200°C, it will melt and be unable to form a new film.

Durability is not achieved.

The fluoroalkyl group-containing compound may be used as an aqueous dispersion or dissolved in an organic solvent, and the fluoroalkyl group-containing compounds may be used alone or in combination.

The fluoroalkyl group-containing compound is 0.1
Absorption method to deposit ~10% by weight.

Apply by bat method, coating method, spray method, etc. As for the heat treatment after application, dry heat treatment at 40 to 230° C. is used, and it is desirable to perform the treatment for 0.5 to 10 minutes.

The hot bath treatment is preferably a method of immersion treatment in hot water of 30 to 140° C. for 0.1 to 10 minutes, and it is also preferably used to perform a steam treatment before immersion in the hot bath to facilitate the immersion.

What is the antistatic agent used in the present invention? Cationic antistatic agents such as quaternary ammonium salts or amine salts are preferably used.

The antistatic agent is 0.1 to 10 for the fiber! It is applied in liquid form to 5% and does not dry after hot water bath treatment.
After drying at a low temperature below ℃, it is applied by an absorption method, a pad method, a coating method, a spray method, etc.

The heat treatment after applying the antistatic agent is preferably a dry heat treatment at 90 to 230° C. with low relative humidity for 0.5 to 10 minutes. It is necessary that this dry heat treatment 111 forms a film with the fluoroalkyl groups facing outward.

Furthermore, the contact-separation structural product of the present invention refers to a single-yarn knitted fabric.

It may be a woven fabric, a non-woven fabric, or any product form, and is not particularly limited.

〔Example〕

Next, embodiments of the present invention will be explained.

In addition, % in an example means weight t%.

Water repellency was determined using the JIS L-1092 spray test method.
Oil repellency was determined according to the method specified in AATCCTM118-1966. As for durability.

Washed according to JIS L-0217-103 method and dry cleaned using L-0217- containing surfactant.
Dry cleaning was performed using the 401 method, air drying was performed, and water repellency was evaluated.

The softening point of the fluoroalkyl group-containing compound was determined with the naked eye by drying water and a solvent in vacuum, raising the temperature at 2° and 71 minutes using a hot plate method. The content of fluoroalkyl groups was confirmed by infrared absorption spectrum.

The antistatic property was evaluated by the frictional charging voltage against cotton fabric at 20° C./40% RH using the JIS L-1094 frictional charging voltage method.

Example 1 A plain fabric made of double yarns of 75d/24f polyester filament false twisted yarn was dyed red, dried, immersed in a bath under 1 condition 1, picked up with a mangle, reduced to 68%, and squeezed to %100.
After drying at 150°C, dry heat treatment was performed at 150°C for 1 minute. after that,
It was immersed in a hot water bath at 70°C for 1 minute, and after being immersed in a bath under condition 2 with a moisture content of 54%, it was picked up to 58%.
After drying again at 100°C, heat treatment was performed at 180°C for 1 minute.

The obtained treated product has a frictional charging voltage of 360V and a water repellency of Zoo
Point, point curve Oil repellent grade, frictional voltage 1400V after 20 washes
It had excellent performance, with water repellency of 100 points and oil repellency of grade 5, and after 10 dry cleanings, a frictional charging voltage of 580 V, water repellency of 100 points, and oil repellency of grade 6, with almost no performance deterioration.

In addition, for specific softness, after soaking in the bath of condition 3, picking it up with a mangle and reducing it to 64%, drying at 100°C and dry heat treatment at 180°C, it has a frictional charging voltage of 840V, water repellency of 80 points, oil repellency of 3rd class, and washing. Frictional charging voltage 5600V after 20 times,
Water repellency 70 points, oil repellency grade 5, friction voltage 2300V after 10 dry cleanings, water repellency 50 points.

It was inferior in terms of oil repellency of class 1 and its performance and durability.

Condition 1: Asahi Guard AG-7103% (manufactured by Asahi Glass ■, fluoroalkyl group-containing water repellent finishing agent, softening point 70°C) Water 97%1
00% Condition 2; Vermax 82 4% (Kissou Yuka Pear cationic antistatic agent) Water 96%1
00% Condition 3; Asahi Guard AG-7103% Vermax 82 2% Water 95%1
00% Example 2 Velour-like raised product made of diacetate filaments of 120d/24f (base fabric polyester filament 30
d/12f) was dyed black and dried.

After immersion in the bath under condition 4, the sample was picked up with a mangle and squeezed to 85%, dried at 80°C, and then subjected to dry heat treatment at 150°C for 1 minute. After that, it was immersed in hot water baths at 40℃ and 60℃ for 30 seconds each, then immersed in a bath containing 60% water under condition 2, picked up and tied to 78%, and dried at 100℃ and then dried at 18%.
Dry heat treatment was performed at 0°C for 1 minute.

The obtained treated product had a frictional charging voltage of 240V, water repellency of 100 points, oil repellency of grade 6, and a frictional charging voltage of 1700V after 20 washes.
Water repellency 100 points, oil repellency 6th grade, dry cleaning 1st
After 0 cycles, the frictional charging voltage was 840 V, the water repellency was 100 points, and the oil repellency was 6th grade, showing almost no deterioration in performance and had excellent performance.

For comparison, 1
Those treated with dry heat at 70°C have a frictional charging voltage of 840V, water repellency of 80 points, oil repellency of grade 4, and a frictional charging voltage of 64 after 20 washes.
00V, water repellency 60 points, oil repellency 2nd grade, friction charge voltage 1200v% after 10 dry cleanings water repellency 50 points.

The oil repellency was 1st grade, the performance after treatment was poor, and the durability was also poor.

Condition 4: Scotchgard FC-2183% 1m Tomo 3M ■ Fluoroalkyl group-containing water repellent finishing agent,
Softening point 78℃ Beckamin PM-N 1% (Dainippon Ink Methylolmelamine resin) Berakamiy Ca
t-3760, 5% (Dainippon Ink Catalyst for Methylol Melamine Resin) Water
95.5% 100% Condition 5; Asahi Guard AG-8003% (fluoroalkyl group-containing water repellent agent manufactured by Asahi Glass, softening point 200°C or higher) Beckamine PM-N 1% (Dainippon Ink ■Methylolmelamine resin) Berakamiy Ca
t-3760.5% (Dainippon Ink Catalyst for Methylol Melamine Resin) Vermax 82.2%
(Cationic antistatic agent manufactured by Kisso Yuka) Water
93.5%100
% [Effect 1 of the Invention According to the present invention, fltlj [favorable for fiber structure products].

It is possible to obtain a fiber structure product that can be imparted with water and oil repellency and exhibits good durability against washing and dry washing with charged soap.

Claims (1)

[Claims] A fluoroalkyl group-containing compound having thermoplasticity is applied to the fiber structure and a dry heat treatment is performed at 40 to 230°C, followed by a hot water bath treatment at 30 to 140°C, and then an antistatic agent is applied to the fiber structure to give a temperature of 90 to 230°C. A method for anti-static, water- and oil-repellent treatment of textile structural products, characterized by performing dry heat treatment at 230°C.