JPS62234002A - Thickened oil agent - Google Patents

Abstract

PURPOSE:To obtain a thickened oil agent for insecticidal and antiseptic use having improved hygienicity and safety in scattering work, by adding a specific amount of a polyisobutylene having a specific molecular weight to an aromatic or aliphatic hydrocarbon solvent or their mixture. CONSTITUTION:An aromatic or aliphatic hydrocarbon solvent (e.g. benzene, kerosine, etc.) or their mixture is added with 1-5wt% polyisobutylene having a molecular weight of 10,000-100,000 to obtain the objective thickened oil agent. Since polyisobutylene can be easily and directly dissolved in the above solvent to increase the viscosity of the solvent, it can be sprayed under pressure in the form of coarse droplets without forming fine mist. Accordingly, it can be used as an insecticidal and antiseptic oil agent in excellent hygienicity and safety.

Description

[Detailed Description of the Invention] (Field of Application for Industry E) The present invention relates to a thickening oil agent for insect repellent, antiseptic, or insect repellent/preservative that can improve hygiene and safety during spraying work. .

(Prior art) In general, many of the insect repellent or preservative oils contained in the insect repellent or preservative have a strong mFJ, and are sprayed under pressure to treat the soil under the floor of a house or to treat wood. When spraying, due to its low viscosity, it may diffuse into the air under the floor space, emitting odors, or be inhaled by spraying workers, resulting in hygiene and safety problems during spraying work.

For this reason, it may be possible to increase the specific gravity or thicken the oil, but in the case of insect repellent or antiseptic oils, most of the solvents are hydrocarbon-based from the viewpoint of economy and safety. It uses a solvent, and it is not a thickener that can thicken the oil by directly dissolving in this hydrocarbon solvent. It is known that hydrogen, polybutylene, polyisobutylene, etc. are more soluble in the above-mentioned oil-based hydrocarbon solvents than in water; was not reached.

Conventionally, a water-soluble polymer substance is used as a thickener, and it is dissolved in dripping water to create a viscous liquid, and this viscous liquid is mixed with an emulsified aqueous solution containing pesticides, etc. to increase the viscosity. Although viscosity was used, mechanical stirring means and time required for uniform dissolution were required.

(Object of the Invention) In view of the above circumstances, the present invention has been developed by directly thickening an oil agent for insect repellent or antiseptic purposes from the beginning, and when spraying the oil agent under pressure, it is possible to prevent the oil from forming into a fine mist. Sloppy 8!28
The object of the present invention is to provide a thickening oil agent that forms a thick liquid and diffuses into the air in a working space.

(Structure of the Invention) The present invention provides an oil agent in which an aromatic hydrocarbon solvent, an aliphatic hydrocarbon solvent, or a mixed solvent thereof is used as a solvent. The content is in the range of 1% to 5% by weight.

In the above configuration, if polyisobutylene with the above molecular weight is set to the above content as the polyisobutylene used to thicken the oil, it can be directly dissolved well in the hydrocarbon solvent that makes up the majority of the oil. It is possible to obtain a thickening oil agent that can increase viscosity and maintain pressure dispersibility.

(Example) As an example, a thickening oil agent which is blended with an insect repellent and sprayed under pressure for insect repellent and antiseptic purposes will be described.

This thickening oil agent contains, for example, 1% by weight of insect repellent and 1.1% of preservative.
ia1%, polyisobutylene from 1% to 5% by weight,
It is composed of a hydrocarbon solvent of 93% to 977% by weight.

The insect repellent and preservative used here can be applied as long as they are soluble in aromatic hydrocarbon-based or aliphatic hydrocarbon-based solvents or mixed solvents thereof.
If the drug is solid, it can be used in a state dissolved in a suitable organic solvent.

Specifically, the insect repellent is selected from chlorine-based insect repellents such as RI[1], dieldrin, and aldrin, and organophosphorus-based insect repellents such as phoxim, chlorpyrifos, and tetrac[I-lupinphos, and the preservative is IFlooO. (Nagase Kasei Co., Ltd. product name), Gishiligen Aluminum, Xylazane B
(all product names of Takeda Pharmaceutical Co., Ltd.) etc. are used.

In the present invention, the solvent is an aromatic hydrocarbon type.

Aliphatic hydrocarbon solvents are used singly or in combination; examples of aromatic hydrocarbons include toluene, benzene, xylene, etc.; examples of aliphatic hydrocarbons include kerosene, gasoline, ligroin, and minerals. Turpentine, etc. can be used, and kerosene is usually used.

Polyisobutylene used in the present invention has a molecule m in the range of 10,000 to 100,000, for example, Natrax 3T with a molecule [130,000, 86
0000 Tetrax 6T (both are Nippon Oil Co., Ltd. product names), etc. can be used.

Here, if the molecule a is lower than 110,000, for example, polyisobutylene with a molecule of 115,000 will not thicken the oil agent, and if the molecule is higher than f 1,100,000, for example, polyisobutylene with a molecule ff of 1,150,000 will be difficult to dissolve in the hydrocarbon solvent of the oil agent and will increase the viscosity. It no longer exerts its effectiveness as a sticky agent.

Next, three thickening oils proposed as specific examples in which these are blended will be explained.

The first example uses 1% by weight of Iruden as an insect repellent;
1% by weight of the above IF100O as a preservative.

1ff of the Tetrax 3T as polyisobutylene
lff1%, 9% kerosene as aliphatic hydrocarbon solvent
The composition was composed of 7% by weight.

The second example uses 1% by weight of chlorpyrifos as an insect repellent.
The composition was composed of 1% by weight of IF1000 as a preservative, 3% by weight of Tetrax 6T as polyisobutylene, and 95% by weight of kerosene as an aliphatic hydrocarbon solvent.

The third example contains 1% Phoxim as an insect repellent and 1ffiffi% of the above-mentioned IF1000 as a preservative.

51 m of the Tetrax 6T as polyisobutylene
%, 93% by weight of kerosene as N aliphatic hydrocarbon solvent
It was composed of a combination of

When the thickening oils of these first, second, and third examples were sprayed into a closed space under pressure with a plunger pump at a rate of 2 O2 for 5 minutes, the air in the closed space was
The air was sucked for 5 minutes at a rate of Q/min, and the amount of organic phosphorus contained in the sucked air was measured.

As a result, in the case of the first embodiment, organic phosphorus of 0.26#F/-, in the case of the second embodiment, organic phosphorus of 0.20η/11, and in the case of the third embodiment, 0°10■ /1t of organic phosphorus was detected.

In the case of these Examples, the particles were atomized into coarse droplets during spraying.

On the other hand, 1% by weight of Phoxim as an insect repellent and 19!1% of the above IF1000 as a preservative.

In the first comparative example, which was composed of 0.5% by weight of ATRAX 6-' as polyisobutylene and 97.5% of kerosene as an aliphatic hydrocarbon solvent, thickening was insufficient. When sprayed, it atomized significantly and produced a strong odor.

In this case, 7.20ay/1L of organic phosphorus was measured in the suction air, which is approximately 30 times as much as in the previous example.
70 times more toxic substances were floating in the air, posing a threat to work safety.

In addition, 1% by weight of chlorpyrifos is used as an insect repellent.

In the second comparative example, the IF1000 was used as a preservative at 1% by weight, the Atrax 6T was used as a polyisobutylene at 1% by weight, and the aliphatic hydrocarbon solvent was kerosene at 88% by weight, and the viscosity was high. It got so bad that when spraying under pressure using a plunger pump, the pump clogged, making spraying impossible.

Thus, from ioooo to 10000 as a thickener
Polyisobutylene having a molecular weight of 0 is blended at a blending ratio of 1% by weight to 5% by weight as in the first, second, and third examples for insect repellent/preservative oils using hydrocarbon solvents as solvents. If it is contained, the oil agent can be thickened, and the sanitation and safety of the spraying work can be improved while maintaining the dispersibility during pressurized spraying using a pump.

(Effects of the Invention) According to the thickening oil agent of the present invention, in order to thicken the oil agent, polyisobutylene having a molecular weight of from ioooo to 100,000 is added in an amount of 1% to 5% by weight based on the oil agent. If the content is set within the above range, it will dissolve well directly in the hydrocarbon solvent that makes up the majority of the oil, increase its viscosity, and when the oil is sprayed under pressure, it will not become a fine mist but a coarse liquid. It forms droplets, making it difficult to diffuse into the air in the work space, and also maintains pressurized dispersion and fabric properties.

Therefore, if the thickened oil of the present invention is used as an insect repellent, antiseptic, or insect repellent/preservative oil, when the thickened oil is sprayed under pressure using a pump, the spraying performance will be maintained and the hygiene of the spraying work will be improved. Safety can be improved.

Claims (1)

[Claims] 1. In an oil agent using an aromatic hydrocarbon solvent, an aliphatic hydrocarbon solvent, or a mixed solvent thereof, the oil agent contains polyisobutylene having a molecular weight of 10,000 to 100,000 in a range of 1% to 5% by weight. A thickening oil agent characterized by being impregnated with.