JPH042886A - Stain-proof treatment of silk fiber fabric - Google Patents

Abstract

PURPOSE:To prevent soil redeposition in dry cleaning or in domestic washing by modifying a silk fiber fabric using an aqueous solution containing a water soluble epoxy compound and a catalyst, applying an antistatic agent and a water-absorbing softening agent to the modified silk fiber fabric and carrying out heat treatment. CONSTITUTION:A silk fiber fabric is modified using an aqueous solution containing a water soluble epoxy compound, preferably a glycidyl ether of ethylene glycol, etc., and a catalyst such as a mineral acid salt or an organic acid salt, then subjected to application of a treatment containing an antistatic agent and a water-absorbing softening agent and subsequently heat treated, thus preventing soil redeposition in dry cleaning or in domestic washing. The above-mentioned fabric is also excellent in water absorption and suitable for casual use, etc., therefor.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a stain-proofing method for silk fiber fabrics, and more particularly to a method for preventing stain re-adhesion during dry cleaning and home washing of silk fiber fabrics. Regarding the antifouling processing method.

(Conventional technology) Silk has a unique elegance and elegance that is unrivaled by other fibers, such as a quiet deep luster, a soft texture, and graceful drape, and is highly valued as the top material among fibers. It has been highly evaluated, and in recent years has been used for casual purposes as well, and a large number of shirts and blouses are on the market.

However, on the other hand, when using silk fibers or fabrics containing silk fibers, such as string/polyester, silk/wool, silk/cotton, etc., even if dirt is removed from the fabric during dry cleaning or home washing, it is dispersed in the cleaning solution. It has the disadvantage that dirt re-adheres and the entire fabric becomes darkened.

For this reason, stain-proofing treatments for silk fibers for this purpose include those that make the fabric hydrophilic, such as methylcellulose, hydroxyethylcellulose, carboxymethylcellulose,
Starch, hydroxypropyl starch, PVA, silicic acid compounds, acrylic acid, methacrylic acid polymers, acrylates with polyalkylene groups, methacrylates, glycidyl ether compounds, polyamine compounds, polyester-modified urethane compounds, and methoxy silicone compounds have been used.

(Problem II to be Solved by the Invention) However, the fabric processed by the above-mentioned wood-filtering process has drawbacks such as lack of durable stain resistance and hardening of the texture and reduction in color fastness. In view of the current situation, the present inventors have conducted intensive research to improve these defects and have completed the present invention.

An object of the present invention is to provide a processing method capable of imparting durable antifouling properties to silk fiber fabrics, and in particular, preventing re-deposition of dirt.

(Means for solving the problem) The above object is to apply a treatment liquid containing an antistatic side and a water-absorbing softening side to a silk fiber fabric modified using an aqueous solution containing a water-soluble epoxy compound and a catalyst. This is achieved by a method for stain-proofing silk fiber fabric, which is characterized by subjecting it to subsequent heat treatment.

The present invention will be explained in detail below.

In the present invention, the term "silk fiber fabric" refers to silk fibers in a proportion of 5% of the weight of the fabric.
This refers to woven fabrics and nonwoven fabrics containing 0% by weight or more, and other fibers that are blended or interwoven with silk fibers are not particularly limited.

Water-soluble epoxy compounds used in the present invention include ethylene glycol, polyethylene glycol propylene glycol, polypropylene glycol, glycerin,
Sorbitol, polyglycerol, pentaerythritol, tris(2-hydroquinethyl)isocyanurate, trimethylolpropane, neopentyl glycol,
Mention may be made of phenol ethylene oxide, mono- and polyglycidyl ethers of lauryl alcohol ethylene oxide. In particular, diglycidyl ethers of ethylene glycol polyethylene glycol and propylene glycol polypropylene glycol are preferred in terms of effectiveness.

These water-soluble epoxy compounds are used after being dissolved in water, but in the case of compounds with low solubility, they are dissolved in a medium consisting of a small amount of an organic solvent such as dioxane or isopropyl alcohol and water. The amount of water-soluble epoxy compound applied varies depending on the epoxy equivalent, etc., but for silk fiber fabric,
1 to 20% by weight in the dipping method, preferably 3 to 10% by weight
, 3 to 50% by weight, preferably 6 to 40% by weight in the pad-steam method and band-dry-steam method, and 5 to 50% by weight in the cold hatch method, preferably 10 to 4% by weight.
It is 0% by weight.

Catalysts used in the present invention include neutral salts such as alkali metal salts of sulfuric acid, hydrochloric acid, nitric acid, thiocyanic acid, and thiosulfuric acid; weak alkaline salts such as alkali metal salts of tartaric acid, citric acid, acetic acid, and propionic acid; Examples include amines.

Among the neutral salts, sulfuric acid.

The sodium and potassium salts of hydrochloric acid, nitric acid, thiocyanic acid, and thiosulfate are the weakly alkaline salts; the sodium and potassium salts of tartaric acid, citric acid, acetic acid, and propionic acid are the weakly alkaline salts; and the amines are ethylenediamine, diethylenetriamine, and triamine. Ethylenetetramine, dimethylaminopropylamine.

Preferred are m-phenylenediamine, 2,4.6-)lis(dimethylaminomethyl)phenol, 2-methylimidazole, and dimethylaniline.

Acidic salts can also be used, such as substances that adjust the pH of the processing liquid to 9 or higher, such as magnesium chloride. The amount of catalyst used is 0.3 to 15% by weight, preferably 1 to 15% by weight, based on the silk fiber fabric.

As a method for modifying the silk fiber fabric with a water-soluble epoxy compound and a catalyst, an immersion heating method, a pad steam method, a pad dry steam method, a cold hatch method, etc. can be used. In the immersion heating method, for example, 50 to 1) 0
℃, preferably at a temperature of 60 to 95℃. In the pad-steam method, for example, 50 to 200
After applying an aqueous solution of % by weight, preferably 80 to 120% by weight, steaming is carried out with saturated steam at a temperature below 120°C, preferably below 1) 0°C. In the puffed tri-steam method, for example, after applying an aqueous solution of 50 to 200% by weight, preferably 80 to 120% by weight to silk fibers,
Drying at a temperature of 100°C, then steaming with heated steam at a temperature of 150°C or less or preferably 120°C or less: 1)0
Steam with saturated steam below ℃. In the cold batch method, for example, 50 to 200% by weight of silk fiber,
Preferably, an aqueous solution of 80 to 120% by weight is applied, and then the material is left at room temperature without drying, for example, by rolling it up and covering it with a film or the like to prevent water evaporation. The room temperature is 10°C or more, preferably 20°C or more and 40°C or less, and the time is 20 hours or more, preferably 20 hours or more and 50 hours or less.

After treatment, wash with hot water and soap according to the usual method.

As the antistatic agent used in the present invention, anionic or nonionic antistatic agents are suitable as they also impart water absorption properties. As an anionic antistatic agent,
Alkyl phosphate ester salt type, polyoxyethylene alkyl ether sulfate type, polyoxyethylene alkylphenol ether sulfate salt type, polyoxyethylene fatty acid ester type as nonionic type, polyoxyethylene alkyl ether type, polyoxyethylene alkyl phenol ether type Antistatic agents containing polyoxyethylene groups are preferred.

Examples of the water-absorbing softening agent used in the present invention include fatty acid monoglycerides, sorbitan fatty acid esters, pentaerythritol fatty acid esters, higher fatty acids, higher alcohol 'fAfli ester salts, and dialkyl sulfosuccinic acids.

The amount of antistatic agent and water absorbent softening agent to be used is usually 9:1 to 4:6, preferably 8:2 to 6 by weight, in the same bath or separate baths. : 4,
Moreover, the total amount of treatment agent is 0.05 to 15% for silk fiber fabric.
% by weight, preferably from 0.1 to 8% by weight.

The method of applying a treatment liquid containing an antistatic agent and a water-absorbing softening agent to the modified silk fiber fabric is not particularly limited, but a pad method, a spray method, a roller method, etc. can be applied.

After applying the treatment liquid, it is usually dried at 80 to 130°C for 10 seconds to 3 minutes, and then usually dried at 120 to 180°C for 10 seconds to 3 minutes.
Heat for 1 minute.

(Function) In the present invention, the silk fiber fabric is modified using an aqueous solution containing a water-soluble epoxy compound and a catalyst before being applied with a treatment liquid containing an antistatic agent and a water-absorbing softening agent. The affinity of the inhibitor and the water-absorbing softening agent with the fibers becomes stronger, and due to crosslinking, durable stain resistance etc. can be obtained.

(Example) Hereinafter, the present invention will be specifically explained with reference to Examples.

Further, the test method that is the basis for the numerical values in the examples is as follows.

(1) Stain resistance during dry cleaning 0.5 g of dry stains shown in Table 1 and 5 g of di-2-ethylhexyl sodium sulfosuccinate.

Dissolve 5 g of polyoxyethylene nonyl phenyl ether in 1 liter of perchlorethylene and place the above contaminated solution at 100 mA in a test bottle of a washing tester (Table 1).
and 20 stainless steel balls, preheated the test bottle to bring the test liquid to 40±2℃, then put 3 test pieces of 5cm x 5cm in it, sealed it, attached it to a washing tester, and heated it to 40±2℃.
Run for 30 minutes at ±2°C Next, stop the operation, remove the test piece from the test bottle, and add 100ml of perchlorethylene.
After rinsing the test piece lightly with water, remove excess liquid by sandwiching it between filter paper or dry white cloth, and dry the test piece in a dryer at 60 to 65°C. After drying, the stain remaining on the test piece was visually determined by 10 professional inspectors.

○: No stains Δ: Slight stains ×: Significant stains (2) Stain resistance during household washing 0.5g of dried stains shown in Table 1 was added to a household detergent solution (2g/
j) Dissolve in 1) to create a contaminated solution.

Put 100 mj of the above contaminated liquid and 20 stainless steel balls into a test bottle of a washing tester, preheat the test bottle to bring the test liquid to 40±2°C, and then add 5 cm x 5 c to the test bottle.
Put in 3 test pieces of M, seal it, attach it to the washing test machine, run it for 10 minutes at 40 ± 2 ° C. Next, stop the operation,
Remove the test piece from the test bottle and heat it at 30±2℃ for 2 minutes.
After rinsing the specimen several times, the excess liquid is removed by sandwiching it between filter paper or dry white cotton cloth, and the specimen is dried in a dryer at 60 to 65°C. After drying, the stain remaining on the test piece was visually determined by 10 professional inspectors.

○: No stain adhesion △: Slight stain adhesion ×: Significant stain adhesion (3) Water absorption JIS L 1096 Dripping method A method Example 1 Warp density using 140 count twin yarn for the warp and 66 count wheel yarn for the weft 1) After scouring and bleaching Fuji silk with a weft density of 4 threads/inch and a weft density of 89 threads/inch, a water-soluble epoxy compound of polyethylene glycol (n=13) diglycidyl ether (manufactured by Nagase Chemical Industries, Denacol EX-8) was used.
41: Trademark) 20 g/It, and immersed in an aqueous solution containing 100 g/12 of sodium chloride as a catalyst at a bath ratio of 1:40, treated at 80° C. for 40 minutes, and then washed with hot water, soaped, washed with hot water, and dried.

Next, the epoxy compound-treated fabric was coated with Nylenone 20 (manufactured by Dai-Kogyo Co., Ltd., nonionic antistatic agent, solid content 29%) as an antistatic agent and Morin Softer-CF (20 g/l as a water-absorbing softening agent). Made by Morin Kagaku Kogyo Co., Ltd., nonionic anionic, solid content 20%), immersed in an aqueous solution containing 20g/Il and squeezed at a pink amperage rate of 70%.
0℃.

It was dried for 2 minutes and heat treated at 150°C for 3 minutes.

Comparative Example 1 Using the same scouring and bleaching fabric as in Example 1, a treatment liquid containing an antistatic agent and a water-absorbing softening agent was applied in the same manner as in Example 1 without treatment with an epoxy compound. Then, heat treatment was performed.

Comparative Example 2 The same scouring and bleaching fabric as in Example 1 was used without any treatment.

Table 2 shows the antifouling properties and water absorption properties of the Fuji silk obtained in Examples and Comparative Examples.

As is clear from Table 2, it can be seen that the products processed by the method of the present invention have excellent stain resistance and water absorption.

Example 2 Broad yarn with a warp density of 155 threads/inch using polyester/silk (50150) 100 count double yarn for the warp and 60 count twin yarn of polyester silk (50150) for the weft with a warp density of 77 yarns/inch was refined by a conventional method. , after bleaching, polyethylene glycol (n=13) as a water-soluble epoxy compound
Diglycidyl ether (manufactured by Nagase Chemical Industries, Denacol EX841: trademark) 20g/l, sodium chloride as a catalyst 100g/j! The specimens were immersed in an aqueous solution containing the same at a bath ratio of 1:40, treated at 80° C. for 40 minutes, and then washed with hot water, soaped, washed with hot water, and dried.

Next, the epoxy compound treated cloth was treated with 20 g/l of Nilenone N120 as an antistatic agent and 20 g/l of Morin Softer-CF as a water-absorbing softening agent! After soaking in an aqueous solution containing the liquid and squeezing the liquid at a pink-up rate of 70%,
It was dried for 2 minutes and heat treated at 150°C for 3 minutes.

Comparative Example 3 Using the same scouring and bleaching fabric as in Example 2, a treatment liquid containing an antistatic agent and a water-absorbing softening agent was applied in the same manner as in Example 2 without treatment with an epoxy compound. death,
Next, heat treatment was performed.

Comparative Example 4 The same scouring and bleaching fabric as in Example 2 was used without any treatment.

As is clear from Table 3, the stain resistance of the broadcloths of the obtained Examples and Comparative Examples shows that the products processed by the method of the present invention have excellent stain resistance and water absorption.

(Effects of the Invention) As detailed above, the product obtained by the processing method of the present invention exhibits antifouling performance even after 10 washes, and has excellent water absorption, making it comfortable to wear and extremely useful for casual use. It is.

Furthermore, since no special processing equipment is required, it can be provided at low cost.

Claims (1)

[Claims] (1) Silk fiber characterized by applying a treatment liquid containing an antistatic agent and a water-absorbing softening agent to a silk fiber fabric modified using an aqueous solution containing a water-soluble epoxy compound and a catalyst, and then heat-treating the fabric. Antifouling method for fabric.