JPS63550B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating fibers, and more particularly to a method for treating fibers in which smoothing, water-repellent, oil-repellent, and stain-proofing treatments are performed on the fibers in one step.

Conventionally, textile products have been treated with fluorine compounds to impart water repellency, oil repellency, and stain resistance.

Generally, when manufacturing various textile products by knitting, weaving, or forming webs in non-woven fabrics using fibers, the fibers are used in spindle oil, wood wax, etc.
Treated with oil-retaining smoothing agents such as solid paraffin, carnauba wax, and silicone oil.

Therefore, if the prepared textile product is treated with water-repellent, oil-repellent, and stain-repellent treatment using a fluorine compound, the residual oil-repellent smoothing agent will cause
The processing effect becomes extremely low. Therefore,
In order to avoid the adverse effects of this treatment on the performance imparted to textile products, it is necessary to remove the oil-retaining smoothing agent prior to this treatment. However, even after such a removal process, it is difficult to completely remove the smoothing agent, so various problems occur in the next process of water-repellent, oil-repellent, and antifouling treatment, and the treatment effect is not sufficient. It wasn't something.

The inventors of the present invention have already proposed a method of using a sublimable substance as a fiber smoothing agent and solved the above drawbacks, but as a result of further research, they found that smoothing of fibers is effective in water-repellent, oil-repellent, and waterproof. The present inventors have discovered that both treatments can be achieved to a satisfactory degree even if the stain treatment is performed in one step, and the present invention has been completed.

The present invention provides a method for treating fibers, which comprises treating fibers using a solvent solution or a dispersion composition of a sublimable substance and a fluorine compound.

The present invention covers natural fibers such as cotton, hemp, wool, and silk; synthetic fibers such as polyester, acrylic, nylon, polyvinyl alcohol, polyvinyl chloride, and polypropylene; semi-synthetic fibers such as rayon and acetate; glass fibers; rock wool; asbestos, etc. It can be applied to inorganic fibers and various fibers made by blending these fibers, and various textile products are manufactured by knitting, weaving, or forming webs of nonwoven fabrics.

Examples of sublimable substances that can be used in the present invention include alicyclic compounds such as endo-trimethylenenorbornane, trimethylnorbornane, cyclododecane, adamantane, and sulfur, diurene, naphthalene, diphenyl, benzoic acid, and para-dichlorobenzene. aromatic compounds, trioxymethylene, dimethyl fumarate, coumarin, 1,
Mention may be made of polar compounds such as 6-hexanediol. Among these sublimable substances, alicyclic compounds having 7 to 12 carbon atoms are preferably used in terms of imparting smoothness to the fibers. This sublimable substance can be used alone or in combination with other sublimable substances.

Examples of fluorine compounds include polymers of tetrafluoroethylene, perfluoroalkyl group-containing acrylates or methacrylates, copolymers with alkyl acrylates, maleic anhydride, styrene, butadiene, etc., and fluorine-containing urethane compounds. There is fluororesin.

Sublimable substances and fluorine compounds are used as solvent solutions or emulsions, and the solvents used in this case include acetone, methyl ethyl ketone, ethyl acetate, diethyl ether, methylene chloride, methyl chloroform, trichloroethylene, tetrachloroethylene, and trichlorofluoroethane. , tetrachlorodifluoroethane, etc., which do not have an adverse effect on the fibers to be treated are selected and used. Furthermore, it can be dispersed in water to form a suspension, or it can be used as an emulsion by adding various surfactants.

0.005 for the amount of sublimable substances attached to fibers
The amount may be up to 5% by weight, preferably 0.01 to 3% by weight, and is more effective than conventional lubricant smoothing agents with a smaller amount of adhesion. The amount of the sublimable substance deposited can be adjusted by controlling the contact time, temperature, etc. In addition, the amount of fluorine compound used is not particularly limited, but it is generally used at a ratio of 0.1 to 50% by weight, and the processing conditions are determined as appropriate, taking into account the type of fiber, processing equipment, required performance, etc. It is determined.

Applying a liquid containing a sublimable substance and a fluorine compound,
It can be attached to the fibers by techniques such as dipping. Therefore, fibers processed with a liquid containing both a sublimable substance and a fluorine compound have reduced frictional resistance and become slippery, and can be used to prepare knitted fabrics, woven fabrics, nonwoven fabrics, rugs, etc.

By heat-treating the textile product thus obtained, the sublimable substances attached thereto are vaporized and removed. On the other hand, as a result of this heat treatment, the fluorine compounds contained at the same time form a strong film on the fibers, giving the textile products good water-repellency, oil-repellency, and stain-repellency properties. Therefore, by using a treatment liquid in which a sublimable substance and a fluorine compound coexist in one bath as in the present invention, not only can the fiber processing process be greatly simplified, but processing efficiency can also be significantly improved. . Such a fiber processing method has never been thought of in the prior art, and is an extremely practical processing method because it is labor-saving, equipment-saving, and has excellent workability.

Next, the present invention will be explained in detail with reference to Examples, but the present invention is not limited thereto. Note that the component ratios shown in the Examples are expressed in weight ratios unless otherwise specified. In addition, the water repellency and oil repellency results are based on the following test method.

(1) Water repellency Based on JIS L1092-1977 spray method.

(2) Oil-repellent Prepared for AATCC118-1972.

Gently drop one drop of the reagent shown in the table below onto the surface of the sample spread horizontally, and judge the state of penetration after 3 minutes.

Table 1 Judgment reagent 8 n-heptane 7 n-octane 6 n-decane 5 n-dodecane 4 n-tetradecane 3 n-hexadecane 2 Mixed solution of nudiol (65)/n-hexadecane (35) 1 nudiol 0 1 Example 1: 1 kg of Momen spun yarn, 1% endo-trimethylene norbornane, 3% solvent-type fluororesin (trade name: Asahi Guard AG-650, manufactured by Asahi Glass Co., Ltd.),
After immersing in a solution containing 97% 1,1,1-trichloroethane for 5 minutes, it was taken out and dehydrated at a squeezing rate of 100%.
After natural drying, knitting was performed and it showed good knitting properties.

Thereafter, heat treatment was performed at 130°C for 5 minutes.
The water repellency and oil repellency imparted to this knitted fabric were as follows.

Water repellency: 100 Oil repellency: 6 Comparative example 1 1 kg of Momen spun yarn was mixed with 3% solid paraffin, 1% carnauba wax, and solvent-type fluororesin (product name:
Asahi Guard AG-650, manufactured by Asahi Glass Co., Ltd.) 3
%, 1,1,1-trichloroethane 97% for 5 minutes, and dehydrated under the same conditions as Example 1.
It was air-dried and then knitted.

Thereafter, heat treatment was performed under the same conditions as in Example 1. The water repellency and oil repellency imparted to this knitted fabric were as follows.

Water repellency: 0 Oil repellency: 1 Example 2 1 kg of polyester elastic yarn was mixed with 2 cyclododecane
%, lauryl alcohol (added amount of ethylene oxide: 6 mol) in an aqueous dispersion at 50°C containing 0.1%.
After soaking for a minute, it was taken out, dehydrated at a squeezing rate of 80%, and air-dried. After weaving this material, the obtained fabric was immersed in an aqueous dispersion containing 3% of fluororesin emulsion (product name: Asahi Guard AG-710, manufactured by Asahi Glass Co., Ltd.), and the squeezing rate was 80 using a putting mangle. % and dried at 100°C for 3 minutes.
Thereafter, heat treatment was performed at 170°C for 1 minute. The water repellency and oil repellency imparted to this fabric were as follows.

Water repellency: 100 Oil repellency: 7 Comparative Example 2 After immersing 1 kg of polyester elastic yarn in an aqueous dispersion at 50°C containing 2% wood wax and 0.2% nonylphenol (added amount of ethylene oxide: 10 moles) for 10 minutes. Then, it was taken out, dehydrated at a squeezing rate of 80%, and air-dried. After weaving this material, the resulting fabric was treated with a fluorine compound in the same manner as in Example 2.
The water repellency and oil repellency imparted to this fabric were as follows.

Water repellency: 0 Oiliness: 0

Claims (1)

[Scope of Claims] 1. A method for treating fibers, which comprises treating fibers using a solvent solution or a dispersion composition of a sublimable substance and a fluorine compound. 2. The treatment method according to claim 1, wherein the sublimable substance is an alicyclic compound having 7 to 12 carbon atoms.