JPH04224712A - Mite repellent bedclothes - Google Patents

Abstract

PURPOSE:To obtain a mite repellent bedclothes which has an excellent safety because phenotolyn and deet are applied in the low concentration region, can prevent and eliminates various types of mites such as Aleyrodidar epidermis mites or scorch epidermis mites, etc. by a synergistic effect of phenotolyn and deet, and does not have a problem of the accumulation of dead mite allergen. CONSTITUTION:It is a mite repellent bedclothes, the feature of which is that 0.01-0.2% of a component which contains phenotolyn and deet is respectively held by at least a part of constituent fibers of bedclothes such as a mattress and comforter, their covers or pillow, etc.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to mite-repellent bedding that keeps out mites that are harmful to the human body inside a house.

0002

[Prior Art] In recent years, due to changes in lifestyles, it has become known that dust mites breed on carpets, carpets, tatami mats, bedding, etc., and that when people inhale the living bodies and carcasses of these dust mites, they can cause asthma, nasal allergies, etc. It is being In particular, 70% of childhood asthma
% is said to be caused by Dermatophagoides mites, and it has been pointed out that it is important to control mites in bedding, where Dermatox mites can easily breed. Methods for controlling dust mites inside the bedding include drying it in the sun and removing it with a vacuum cleaner, but drying it in the sun is difficult during inclement weather, especially during the rainy season when dust mites are more likely to breed; Removing dust mites from inside bedding requires a long period of work and is time-consuming. In addition, porous sheets with holes smaller than dust mites (Japanese Patent Laid-Open No. 64-13
938 Publication) and high-density fibers that do not allow dust mites to pass through are known, but both have poor breathability and increase internal humidity.
On the contrary, it may lead to the breeding of mites.

[0003] Furthermore, an attempt to retain acaricides in fillers for bedding has been disclosed in JP-A-62-127097, but considering that dead mites also have allergenic properties, It is not desirable to apply acaricides that leave dead mites in bedding and accumulate them.

0004

Problems to be solved by the present invention are that the conventional techniques are cumbersome to operate, and because acaricides are used, the problem of allergens caused by dead mites cannot be avoided.

[0005]

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems, and provides a composition containing phenothrin and DEET in at least part of the constituent fibers of bedding such as futons, duvet covers, and pillows. 0.01-0.2% of each
We have realized tick-repellent bedding that can safely, easily, and reliably control damage caused by ticks by holding the bed.

[0006] Among the mites that live in houses, the mites that are considered to be the main cause of asthma, nasal allergies, etc. are the Dermatophagoides mites, and representative examples include the Dermatophagoids nigricans and the Dermatophagoids nigra. It is already known that pyrethroid insecticides exhibit acaricidal activity against Dermatophagoides mites, and several acaricides and methods have been proposed, but as mentioned above, dead mites can also be used as allergens. Therefore, it is considered more preferable to use a mite repellent that keeps mites away than to use acaricides that cause dead mites to accumulate in bedding. The present inventors discovered that a pyrethroid insecticide that exhibits acaricidal activity exhibits a repellent effect against mites at a low concentration range in which it does not exhibit acaricidal activity, and thus embarked on the development of the bedding of the present invention. First, we investigated the repellent effects of pyrethroid compounds against Dermatophagoides mites, and found that three types, phenothrin, permethrin, and allethrin, exhibited high repellent effects, with phenothrin being the most excellent among them. Furthermore, it was recognized that pyrethroid compounds had a low repellent effect on Dermatophagoides pectus mites, and as a result of searching for a repellent for Dermatophagoides pectus mites, it was discovered that DEET was the most effective.

[0007] Therefore, we investigated the repellent effect of a mixture of phenothrin and DEET against both types of Dermatophagoides dust mites, and found that by retaining 0.01 to 0.2% of each compound in the fibers, the effect of a mixture of phenothrin and DEET was significantly more than additive. It was discovered that a high repellent effect can be obtained, and the present invention was completed. That is, the present invention is characterized in that fibers constituting at least a portion of bedding such as futons, duvet covers, and pillows retain 0.01 to 0.2% of compositions containing phenothrin and DEET, thereby improving mite repellency. It provides excellent bedding.

[0008] In the present invention, the composition containing phenothrin and DEET can be applied to fibers as is, but it is usually possible to apply it to fibers using appropriate compounding agents such as resins, thickeners, and surfactants. Depending on the purpose, various forms,
For example, it is prepared into an emulsion, an oil solution, an aqueous solution, etc., and is retained on the fibers by any method such as scattering, spraying, or coating. In addition, the composition may contain other active agents such as fungicides and insect repellents, fragrances, or stabilizers, and the thus obtained mite-repellent bedding can be used to protect against mites, such as Dermatophagoides nigricans and Dermatophagoides nigricans. Of course, it is extremely effective in repelling mites such as woolly mites and wheat mites, dust mites, dust mites, claw mites, and dust mites, and it is also excellent in terms of safety because it is treated with a low concentration of chemicals.

Further, examples of the fibers to be retained include synthetic cotton (polyester cotton, nylon cotton, acrylic cotton, etc.), natural cotton (cotton, cotton, etc.), feathers and other animal fibers, etc. The present invention is not limited to this, and if necessary, a suitable holder such as buckwheat hulls, foamed plastic, paper, nonwoven fabric, or wood may be used in combination.

0010

EXAMPLES The present invention will be described in detail below according to test examples and examples.

Test Example Polyester cotton treated with the test compound and untreated cotton were made into a mini cup (6 cm in diameter, 3 cm in height, with a lid).
Approximately 200 Leopard dust mites were placed in the center of the cage. After 16 hours, the number of mites in each cotton was measured by the washing-out method, and the repellency rate was determined according to the formula below. The test was repeated six times.

[Math 1]

0012 *Not measurable due to significant acaricidal properties

The tick-repellent bedding fiber of the present invention, in which polyester cotton is treated with phenothrin and DEET, exhibited a more repellent effect than expected from the test results of phenothrin alone or DEET alone, and a remarkable synergistic effect was observed. Moreover, no synergistic repellent effect was observed with powdered feed containing phenothrin and DEET, suggesting the specificity of treating it with fiber.

EXAMPLE A futon was made using polyester cotton or untreated cotton containing 0.04% each of phenothrin and DEET. The number of mites in the futon was measured 2, 4, and 8 weeks after the start of use, and the results were as follows.

[0015]

[0016]Only a few mites were present in the futon of the present invention made using cotton treated with phenothrin and DEET, whereas a large number of mites were found in the futon made of untreated cotton. The usefulness of the invented bedding has become clear.

[0017]

Effects of the Invention The tick-repellent bedding of the present invention uses highly safe phenothrin and DEET, which are widely used as insecticides or repellents, and can be used as a repellent in a low concentration range that does not exhibit acaricidal properties. Because it is applied, it is safer. Moreover, since it utilizes the repellent effect,
There is no problem of accumulation of dead mite allergens, which is a concern when bedding is treated with acaricides. Further, according to the bedding of the present invention, the synergistic effect of phenothrin and DEET makes it possible to safely and reliably control damage caused by various types of mites, including Dermatophagoides nigricans and Deterinary mites.

Claims (1)

[Claims] 1. A mite repellent, characterized in that fibers constituting at least a portion of bedding such as futons, duvet covers, and pillows retain 0.01 to 0.2% of each of compositions containing phenothrin and DEET. Sex bedding.