JPH02269880A - Fiber structure having washing durability and repellent effect on insects or mites and production thereof - Google Patents

Abstract

PURPOSE:To obtain a fiber structure having the subject repellent effects with washing durability by treating a fiber structure with a dispersion of a repellent against insects or mites and a water-insoluble resin dispersion compatible therewith and heat-treating the resultant fiber structure. CONSTITUTION:A fiber structure is impregnated with a dispersion of a repellent (e.g. diethyltoluamide) against insects or mites and a water-insoluble resin compatible therewith, e.g. polyurethane elastomer, epoxy resin or amino-modified silicone resin, alone or combination of the plural resins and then heat-treated to afford a fiber structure having repellent effects on insect pests with washing durability. The fiber structure is capable of exhibiting effects on retention of >=70% repellent ratio without any change even after washing five times at ambient temperature as washing durability (>=70% repellency ratio also before the washing).

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a textile structure that is wash-resistant and has a repellent effect on insects or mites, and a method for producing the same.

PRIOR ART Powerful insect repellents against ticks, fleas, insects, cockroaches, house flies, biting flies, flies, gnats, etc. have been known for some time.
They have been formulated singly or in combination with a solvent or ointment base, and used as insect repellent sprays for the human body, lowsilanes, creams, and the like.

Therefore, attempts have been made to apply these repellents to fiber structures, but they have not been put to practical use because of their lack of washing resistance.

Separately, as a method for solidifying oily substances,
Publication No. 83 discloses a method of dispersing adsorbent porous powder in gas-permeable plastic and molding it, and
Publication No. 79044 discloses a method of incorporating an odorant into a porous molded article mainly made of cellulose acetate with a porosity of 30% or more.However, in all of these methods, oily substances are added to the fiber structure. It is not suitable for fixing.

Problems to be Solved by the Invention An object of the present invention is to provide a fiber structure in which such insect or mite repellent components are uniformly and stably fixed to fibers. Furthermore, it is another object of the present invention to provide an efficient manufacturing method for such a fibrous structure.

Means for Solving the Problems The present invention applies a liquid consisting of a dispersion of a component that repels insects or mites (hereinafter referred to as an insect repellent) and a water-insoluble resin that is compatible with the component to cellulose fibers. The invention was developed based on the discovery that washing resistance and repellency against insects and mites can be obtained by doing so.

That is, in the present invention, a fiber structure is impregnated with a liquid consisting of an insect repellent, a dispersion of a water-insoluble resin that is compatible with the column side, and, if necessary, a softener and/or a dye fixing agent. , drying and heat treatment to produce a fibrous structure that is durable against washing and has an insect or mite repellent effect.

The fiber structure may be made of natural fibers, recycled fibers, or synthetic fibers, but natural fibers, recycled fibers,
In particular, fibrous structures made of cellulose fibers are preferred because they are compatible with insect repellents and are easy to process uniformly and continuously. Preferably, dyed materials such as

Insect repellent contains diethyltoluamide, 2
-Ethylhexanediol 1.3, pentalone, dimethyl phthalate, tetramethylthiuram desulfite, de-n-probylisotin thirimeronate, butadiene furfural copolymer, hexachlorophenol, pentachlorophenol, naphthalene, 0-dichlor Examples include those containing benzene, monochloronaphthalene, etc., but diethyltoluamide, 2-ethylhexanediol 1
．． 3. It is preferable to use pentalone, dimethyl phthalate, etc., and diethyltoluamide and dimethyl phthalate are particularly preferable from the viewpoint of economy and repellent effect.

In addition, isoborneol thiocyanacetate, β-methylumbelliferone, hydroquinone and its derivative S-421, etc. may be used as effect enhancers (
The drug may also be in the form of a capsule containing an inclusion compound such as dextrin.

When encapsulated, washing resistance can be further improved. However, even when the drug is encapsulated,
Of course, the use of a water-insoluble resin, drying, and heat treatment steps are necessary.

Water-insoluble resins compatible with insect repellents include aliphatic/alicyclic hexamethylene diisocyanate, xylene diisocyanate, water-added 4,4'-diphenylmethane diisocyanate, inphorone diisocyanate, and vinyl.
Resins obtained by reacting polyisocyanates such as retted hexamethylene diisocyanate with polyols such as polyester polyols, polyether polyols, acrylic polyols, polybutadiene polyols, and silicone polyols, and sulfonic acid during the reaction of polyisocyanates and polyols. Self-emulsifying or forced emulsifying urethane elastomer with a cross-linked resin obtained by converting anion groups of bases or carboxylic acid groups or quaternary ammonium salts into water-dispersed products, bisphenol A with an average molecular weight of about 700 or more, and diglycidyl. Ether and polyaddition type epoxy resin are forcibly emulsified in water and dispersed in water, and silicone with epoxy-modified terminals or amino-modified silicone resin with terminals blocked with methyl, ethyl, methoxy, etc. are dispersed in water. , a water-dispersed acrylic ester resin may be used alone or in combination.

Higher fatty acid wax glyceride compounds or polyoxyethylene adducts thereof may be used to impart flexibility.

Sen I! Add an insect repellent to the structure and a dispersion of a water-insoluble resin that is compatible with it (softener, dye fixing agent,
(which may also contain a rust preventive agent, etc.).

After impregnating with the liquid, it is squeezed with a roll, dried and heat treated. The heat treatment is preferably a kear ring treatment and/or a calender treatment including a thermal calender, and this treatment improves the washing resistance of the resin by insolubilizing the resin and mechanically pushing the resin into the fibrous structure.

In the present invention, a product with a repellency rate of 70% or more for insects or mites is considered to have a repellent effect, and the evaluation of washing resistance is performed after washing 5 times, with a repellency maintenance rate of 70% or more compared to the initial repellency rate. is wash resistant. This was determined based on the fact that generally, if the repellency rate is 50% or more, it can be determined that there is a repellent effect.

Regarding washing, there are home washing methods and commercial futon washing methods, but since both methods involve detergent, hot water, and mechanical action, the above conditions cannot be satisfied for these washing methods. be.

Next, the present invention will be explained in more detail according to Examples, and the test methods used in the Examples are as follows.

1 hill 1111 Spread 0.5 g of powdered feed for mite breeding (approximately 1000 mites per 1 g of medium) evenly on a resin tray measuring 25 cm to 1119 cm wide and 2.5 cm deep. Place a sample cut to 7C x 7cm on this surface, and place 2 pieces in the center of the sample.
Place a csx2cm sheet of rasha paper, and then place 0.2g of dust mite-free powdered feed on top of it.
m, height 9cm), put saturated saline solution in it and keep the humidity at 75χ, put it on a slatted floor, and keep it at 25℃±1.
Breed in a thermostat at ℃. After 2 days, put the feed in the center of the feed together with the Rasha paper into a 3001 Erlenmeyer flask.
After adding and mixing the 5χφ detergent liquid l111, water and the Crystal Bioleft solution were added and left for a while. This is filtered using a suction filtration device ('a, the paper is Toyo Roshi Paper No.
, 2. Use a flask with a diameter of 1 cm with 10 eyes inserted), add water until there are no mites in the flask, and repeat suction filtration. Then, count the number of mites on the filter paper under a stereomicroscope. Count.

As a control plot, test t4, which was not treated with any chemical, was similarly tested, and the number of ticks repelled was calculated by comparing it with the number of mites in the control plot. The test was conducted in multiple 1 area.

Test dust mites: Spray a 10x anionic liquid detergent onto the futon, leave it for 5 minutes, and allow it to penetrate into the cotton of the futon.
Wash with a brush for 3 minutes, then wash with detergent 1 in a washer-type washing machine.
Wash at 40°C for 10 minutes with a centrifugal dehydrator (for 5 minutes) to wash out dirt, dust, salt, etc. from the cotton using centrifugal force, and then dehydrate for 4 minutes. Dry in a drying room at 50°C for 3 hours, then massage in a drum dryer at 60°C for 15 minutes, and wash once.

According to the washing method described in JIS L-0217-1976, Pictorial Display Symbols 103 Law, which is stipulated in Display Symbols and Display Methods for Handling of Textile Products.

Cockroach A test sample and an untreated sample cut into 10cm x 10cm cubes are attached with double-sided tape into a resin container measuring 1° height 9cm, width 26cm, and $120cm. Place a plywood board (shelter) of the same size on top of the sample with a 5-gap gap, place moist absorbent cotton and a solid sample in the center, and apply a thin layer of petroleum jelly to the inner wall of the container to prevent cockroaches from escaping. After painting, 30 adult cockroaches were placed in the shelter, left overnight, and the next morning the repellent effect was determined by the number of cockroaches living under the shelter.

Test insect: 30 adult German cockroaches Example 1 After desizing, scouring, and bleaching a 100× cotton satin tissue fabric, the treatment solution of prescription No. 1 in Table 1 was continuously applied to the fabric, and
After squeezing at a squeezing rate of 1%, drying at 100°C for 0.4 minutes, and further heat-treating at 140°C for 0.2 minutes, calender treatment was performed at a surface temperature of 100°C.

Using this fabric, I made a miniature that is X 1+* X 5cm.

A futon (extension: polyester cotton 100x) was manufactured, and the futon was washed five times by a futon washing company in the car, and then a tick repellent test was conducted.

The results are shown in Table 2. Even after washing 5 times, the temperature was 86°0.
It showed very good tick repellency rate with χ.

Compared to the initial tick repellency rate of 98.51, it had a repellency maintenance rate of 87.3χ, and even after the home washing test, good results were obtained as shown in Table 2.

Similarly, Table 3 shows the cockroach repellent test results.

Similar good results were obtained in the tick repellent test.

Example 2 After desizing, scouring, and bleaching a 100× cotton plain weave fabric, it was printed using a reactive dye, washed with water for color development, and then treated with the treatment solution of recipe No. 2 in Table 1 at the same time as Example 1. Then, a tick repellent test was performed. The results are shown in Table 2.

Similar to Example 1, good results were obtained.

Example 3 Polyester 80/! After the plain weave fabric made of 820 blend is desized, scoured, bleached, and plain dyed with disperse dye, the first
Continuously apply the treatment liquid of prescription No. 3 in the table for 5 days and 6 days.
After squeezing with χ, drying at 110°C for 0.4 minutes, and further heat-treating at 140°C for 0.2 minutes, calendering was performed at a surface temperature of 80°C. Thereafter, it was washed in the same manner as in Example 1, and the dust mite repellency was evaluated. The results were good as shown in Table 2.

Comparative Example 1 The same method as in Example 1 was carried out except that the treatment liquid used was formulation No. 4 in Table 1. Although the initial tick repellency rate was good, the durability was poor (see Table 2).

Comparative Example 2 The same method as in Example 2 was carried out except that the treatment liquid used was formulation No. 5 in Table 1. Although the initial tick repellency rate was good, the durability was poor (see Table 2).

Comparative Example 3 The same method as in Example 3 was carried out except that the treatment liquid used was formulation No. 6 in Table 1. Although the initial tick repellency rate was good, the durability was poor (see Table 2).

Example 4 A capsule containing diethyltoluamide (60% by weight of diethyltoluamide) was prepared and used in place of the formulation of Example 1 (450 parts of diethyltoluamide, 350 parts of trimethylbenzene, and 200 parts of emulsifier). The amount used is 37.5g
/ 11 was the same as Example 1 with pure separation summer. Example 1
As a result of the same treatment and evaluation of tick repellency, the initial 94
．． 7χ, after 5 times of home washing method 103, a good repellency maintenance rate of 83.0X (87.6 points) was obtained.

Example 5 Dimethyl phthalate-containing capsules (
Dimethyl phthalate 60 wt. 2) was used.

As a result of treatment in the same manner as in Example 1, the initial repellency maintenance rate was 93.8χ and 83.2χ after 5 home washings (8B, 7
χ) was obtained.

Effects of the Invention The present invention provides an insect and mite repellent effect that is extremely durable against washing. Therefore, the present invention can be applied to daily necessities such as futons and curtains, making it possible to lead a hygienic life without worrying about coming into contact with dust mites, which tend to cause various allergies.

Patent applicant: Daido Malta Dyeing Co., Ltd.

Claims (2)

[Claims] (1) The fiber structure is impregnated with a liquid consisting of an insect or mite repellent and a dispersion of a water-insoluble resin that is compatible with it, as well as a softener and a dye fixing agent as necessary, squeezed, dried, and heat treated. A method for producing a fibrous structure having a wash-durable insect or mite repellent effect by: (2) An insect or mite repellent is attached to the fiber together with a water-insoluble resin that is compatible with the repellent,
Has an insect or mite repellency rate of 70% or more, JISL-0
A fibrous structure having a durable repellent effect against insects or mites, characterized in that it has a repellency retention rate of 70% or more even after being washed five times by home washing according to Pictorial Symbol No. 103 of No. 217-1976.