JPS5943444B2 - textile pest repellent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a textile insect repellent that has extremely low toxicity to the human body and has an excellent effect of suppressing damage caused by textile insects.

Conventionally, naphthalene, camphor, and baladichlorobenzene have been commonly used as pest control agents for fibers such as wool and silk, and among them, baladichlorobenzene is the most widely used because it has a strong insecticidal effect and is inexpensive. ing.

However, Balajichlorobenzene is a type of organic chlorine drug that can accumulate in living organisms and cause harm, and can also combine with the ocular mucosa and cause clouding of the crystalline lens (Industrial Poisoning Handbook). The use of organic chlorine aldrin, which is an insect repellent treatment agent for textile processing, is already prohibited.

Therefore, in recent years, many compounds or combinations thereof have been proposed as textile pest control agents or repellents to replace Baladichlorobenzene.

For example, insect repellents for wool (specially JP-A No. 52-110823), an insect repellent containing as an active ingredient a cyclic compound having 10 carbon atoms and an ether bond (JP-A No. 52-110823);
A sublimable insect repellent containing adamantane, a sublimable hydrocarbon, and a sublimable or volatile polar compound (Japanese Unexamined Patent Publication No. 121936/1983), an insect repellent containing a combination of naphthalene and thymol as active ingredients. Agent (Unexamined Japanese Patent Publication No. 53-1
09938), naphthalene and 2-isopropyl-
Insect repellent for clothing containing a combination of 5-methylphenol as an active ingredient (Japanese Patent Application Laid-Open No. 54-32620), insect repellent for clothing containing acetoxime as the main ingredient (Japanese Patent Application Laid-open No. 54-10)
1425), an insect repellent containing as an active ingredient an aromatic compound having a substituent such as a carbon chain having a branch at the α-1 position (Japanese Unexamined Patent Publication No. 110321/1982), l-
Aromatic insect repellent containing carvone as an active ingredient
19229) and the like have been proposed.

However, all of these insect repellents have disadvantages, such as being more expensive than Balajichlorobenzene, having significantly lower insect repellent effects, being highly volatile and having poor sustainability, and changing significantly over time. death,
This cannot be said to be fully satisfactory in practical terms.

In view of the current situation regarding insect repellents for clothing, the present inventors have
In order to develop a practical insect repellent that is extremely safe for the human body, has an excellent insect repellent effect, and has an excellent long-lasting effect, we focused on the insect repellent power of naphthalene, which has extremely low toxicity to mammals but has a drawback in its insect repellent effect. As a result of various studies in order to improve this, it was discovered that the objective could be achieved by using fluorene or acenaphthene as a synergist, and based on this knowledge, the present invention was accomplished.

That is, the present invention provides a textile pest repellent containing a combination of naphthalene and fluorene or acenaphthene as active ingredients.

Naphthalene used in the repellent of the present invention has relatively weak insect repellent power, but has extremely low toxicity to humans and livestock, and is a substance that has been used as a textile pest repellent for a long time.

Furthermore, in the repellent of the present invention, the fluorene synergist and acenaphthene synergist used in combination with naphthalene are inexpensive hydrocarbons obtained as fractions close to each other through coal-coeur fractional distillation, and have no insecticidal power. can be,
It is also an extremely weak substance that suppresses feeding damage.

It is completely unexpected that fluorene and acenaphthene, which have virtually no insect-repellent properties, have extremely excellent synergistic effects as naphthalene synergists, and in particular can virtually completely suppress feeding damage from textile pests. Met.

Fluorene is a solid with a melting point of 116-7°C and a boiling point of 295°C, and is a substance that does not show carcinogenicity or mutagenicity.
Acenaphthene is a solid substance with a melting point of 95°C and a boiling point of 279°C that does not show mutagenicity (see the Chemistry Area "Environmental Pollutants and Toxic Organic Substances Department" Special Issue No. 129, page 128), and is extremely safe for the human body. It is something.

In order to blend this fluorene or acenaphthene with naphthalene, it is usually enough to mix both components into powder, and the blending ratio is not particularly limited, but if too much fluorene or acenaphthene is actually used, all of the naphthalene will be After sublimation, only fluorene or acenaphthene, which has no repellent effect when used alone, remains and is therefore unsuitable for practical use.

Therefore, the amount is selected to be equal to or less than naphthalene, preferably within a range of 2 to 30 parts by weight of fluorene or acenaphthene per 100 parts by weight of the total amount of naphthalene and fluorene or acenaphthene.

Further, if desired, fluorene and acenaphthene can be used together in such a ratio that the total amount falls within the above range.

The mixed powder may be used as it is uniformly mixed, but it can be made into tablets of a predetermined amount by compression molding or the like to make it easier to use.

The pest repellent of the present invention is not only inexpensive and harmless to the human body, but also exhibits excellent insect repellent effects against textile pests such as burr, carp, Japanese carp, Japanese burr, Japanese carp, and white-tailed cutlet. It has high practical value.

Next, the present invention will be explained in more detail with reference to Examples.

Example 1 A repellent was prepared by pulverizing fluorene and naphthalene, mixing the respective powders in various proportions shown in Table 1, and thoroughly mixing each mixture to homogenize it.

The insect repellent effect of each of these repellents was tested by the following method.

The test insects used in this test were Ti
The 30- to 36-day-old larvae of P. nea pellionella were used.

Test method; 10 test insects and wool deep test cloth (2 CIIL x 2 CI'rL 140-451 ng
) and covered with a 40 mesh wire mesh.

A filter paper was placed in the center of the wire mesh, 50~ of repellent was placed on it, another Petri dish was placed on top of it, and the seam between the two Petri dishes was sealed.

After this was left in a constant temperature and humidity room at a temperature of 30° C. and a humidity of 65% for 7 days, the wool cloth was removed and the amount of feeding damage was measured and the number of dead insects was counted.

The cows and any insects present were left in their natural state for an additional day, and the number of deaths was counted again.

The results are shown in the table below.

The values in the table are the average values obtained by conducting the test 3 to 5 times.

For comparison, naphthalene alone, fluorene alone, camphor alone, and a mixture of camphor and the synergist fluorene of the present invention were similarly tested, and the amounts of feeding damage and insect mortality rates are summarized in Table 1.

Example 2 Naphthalene and acenaphthene were ground and the respective powders were mixed in the proportions shown in Table 2 to prepare a fiber pest repellent in the same manner as in Example 1.

This product was tested in the same manner as in Example 1, and the results are summarized in Table 2.

Claims (1)

[Scope of Claims] 1. A textile pest repellent containing a combination of naphthalene and fluorene or acenaphthene as active ingredients. 2 2 to 30 fluorene or acenaphthene per 100 parts by weight of the total amount of naphthalene and fluorene or acenaphthene
The textile pest repellent according to claim 1, expressed in parts by weight.