JP2021101755A - Aromatic liquid - Google Patents

Abstract

To provide an aromatic liquid which is volatilized by being impregnated in a liquid member, and is used by a vaporizer not performing the supply of the aromatic liquid to a liquid absorbing member during use, has a high average volatilization speed during a use period, and hardly generates a difference in the intensity of aroma between the initial and final stages in use.SOLUTION: An aromatic liquid contains a flavor and a solvent, and has a residual ratio (R) 144 hours later in a specific testing condition specified in the present specification of 50% or less, and a value obtained by subtracting a weight loss speed (V2) of 120-144 hours from a weight loss speed (V1) of 0-24 hour(s), and satisfying 1.000 g/day or less. When the aromatic liquid is impregnated in a liquid absorbing member, and is volatilized by a vaporizer not performing the supply of the aromatic liquid to the liquid absorbing member during use, an average volatilization speed during a use period becomes high, and a difference in the intensity of aroma between the initial and final stages in use is hardly generated.SELECTED DRAWING: None

Description

The present invention is an aromatic liquid used in a volatilizer that is impregnated with a liquid absorbing member and volatilized, and the aromatic liquid is not supplied to the liquid absorbing member during use, and has a high average volatilization rate during the period of use. Moreover, it relates to an aromatic liquid in which the intensity of fragrance is unlikely to differ between the first half of use and the second half of use. The present invention also relates to a volatilizer using the aromatic liquid.

Conventionally, a fragrance liquid containing a fragrance has been widely used in order to eliminate the discomfort caused by the odor in the vehicle or the interior and to create a comfortable space.

Conventionally, various types of volatilizers for volatilizing aromatic liquids have been developed. A typical volatilizer is a type having a liquid absorbing member that stores an aromatic liquid in a container and volatilizes the stored aromatic liquid while sucking it up. In this type of volatilizer, the aromatic liquid stored in the container is continuously supplied to the volatilizer during use, so that the aroma emitted can be easily maintained constant from the first half to the second half of use. There is. However, since the fragrance liquid is stored in the container of this type of volatilizer, there is a drawback that the fragrance liquid in the container is liable to spill due to shaking when traveling on a rough road when installed in the interior of an automobile. ..

Further, as a volatilizer capable of preventing the fragrance liquid from spilling, a type in which the opening of the container containing the fragrance liquid is covered with a membrane that allows gas to permeate and the fragrance liquid is volatilized through the membrane has also been proposed. (See, for example, Patent Document 1). However, such a type of volatilizer has a drawback that it cannot meet a wide range of tastes of users because the composition of the directional liquid that can be volatilized through the membrane is restricted.

On the other hand, there is a type of volatilizer in which only the liquid absorbing member impregnated with the aromatic liquid is housed in the container, and the aromatic liquid is volatilized without supplying the aromatic liquid to the liquid absorbing member during use. Since all the fragrance liquid is impregnated in the liquid absorbing member of this type of volatilizer, there is no concern that the fragrance liquid in the container will spill due to shaking or the like, and the design is suitable for indoor use of automobiles. .. However, such a type of volatilizer has a drawback that the volatilization rate of the fragrance liquid tends to decrease with the lapse of use time, and it is difficult to maintain the intensity of the scent constant from the first half to the second half of use. In addition, if a fragrance liquid that is difficult to volatilize is used, the intensity of the scent can be kept constant from the first half to the second half of use, but on the contrary, the average volatilization rate during the use period becomes slower, and as a result, the scent The strength tends to be weakened, and the fragrance effect produced throughout the period of use tends to be insufficient.

Japanese Unexamined Patent Publication No. 2014-94619

An object of the present invention is an aromatic liquid used in a volatilizer that is impregnated with a liquid absorbing member and volatilized, and the aromatic liquid is not supplied to the liquid absorbing member during use, and the average volatilization rate during the period of use. It is to provide an fragrance liquid that has a high fragrance and does not easily cause a difference in fragrance intensity between the first half of use and the second half of use.

As a result of diligent studies to solve the above problems, the present inventor has found that the residual rate (R) after 144 hours is 50% or less and 0 to 0 under the specific test conditions described later, which contains a fragrance and a solvent. The liquid absorbing member is impregnated with an aromatic liquid in which the value obtained by subtracting the weight loss rate (V ₂ ) of 120 to 144 hours from the weight loss rate of 24 hours (V ₁ ) is 1.000 g / day or less, and the liquid absorbing liquid is absorbed during use. When volatilized with a volatilizer that does not supply fragrance liquid to the members, the average volatilization rate during the period of use is high, and it is possible to suppress the decrease in the intensity of the fragrance in the latter half of use. It was found that the difference in the intensity of the fragrance is less likely to occur. The present invention has been completed by further studies based on such findings.

That is, the present invention provides the inventions of the following aspects.
Item 1. It is an aromatic liquid used in a volatilizer that is impregnated into a liquid absorbing member and volatilized, and the aromatic liquid is not supplied to the liquid absorbing member during use.
Contains fragrances and solvents
The residual rate (R) after 144 hours measured under the following test conditions is 50% or less, and the weight loss rate (V ₁ ) of 0 to 24 hours _{minus the weight loss rate (V 2} ) of 120 to 144 hours. Aroma liquid having a value of 1.000 g / day.
<Test conditions>
(1) A square liquid absorbing member (felt; length 40 mm, width 18 mm, thickness 5 mm, density 0.21 g / cm ³ ) placed on a plate is impregnated with 3.5 mL of aromatic liquid and indoors at 40 ° C. Stand still in space.
(2) At the start of standing, 24 hours, 120 hours, and 144 hours after the start of standing, the weight of the remaining aromatic liquid is determined.
(3) According to the following formula, the residual rate R after 144 hours, the weight loss rate V ₁ for 0 to 24 hours, and the weight loss rate V ₂ for 120 to 144 hours are calculated.
R (%) = (weight of fragrance liquid 144 hours after the start of standing / weight of fragrance liquid at the start of standing) × 100
V ₁ (g / day) = weight of fragrance liquid at the start of standing-weight of fragrance liquid 24 hours after the start of standing V ₂ (g / day) = weight of fragrance liquid 120 hours after the start of standing -Weight term of aromatic liquid 144 hours after the start of standing 2. Item 2. The aromatic liquid according to Item 1, wherein the solvent is a paraffinic hydrocarbon having a vapor pressure of 0.005 to 0.040 kPa at 20 ° C.
Item 3. Item 2. The fragrance liquid according to Item 1 or 2, which contains 20 to 90% by weight of a fragrance and 10 to 80% by weight of a solvent.
Item 4. Item 4. The aromatic liquid according to any one of Items 1 to 3, which is used indoors of an automobile.
Item 5. Item 2. The fragrance liquid according to any one of Items 1 to 4, a liquid absorbing member, and a container having a vent.
The container is contained with the liquid absorbing member impregnated with the aromatic liquid.
The fragrance liquid does not exist in a state where the liquid absorbing member is not impregnated.
Volatilizer.

According to the present invention, the average volatilization rate during the period of use is high in the aromatic liquid used in the volatilizer, which is impregnated in the liquid absorbing member and volatilized, and the aromatic liquid is not supplied to the liquid absorbing member during use. Therefore, the average volatilization amount of the fragrance per unit time is high, and an excellent fragrance effect can be obtained. Further, according to the present invention, in the fragrance liquid used in the volatilizer, it is possible to suppress the decrease in scent intensity in the latter half of use, and it is difficult to make a difference in scent intensity between the first half of use and the latter half of use. be able to.

1. 1. Aroma liquid The fragrance liquid of the present invention is an fragrance liquid used in a volatilizer that is impregnated with a liquid absorbing member and volatilized, and the fragrance liquid is not supplied to the liquid absorbing member during use, and contains a fragrance and a solvent. Including, under the specific test conditions described below, the residual rate (R) after 144 hours is 50% or less, and the weight loss rate (V ₁ ) of 0 to 24 hours is changed to the weight loss rate (V ₂ ) of 120 to 144 hours. The deducted value is 1.000 g / day or less. Hereinafter, the aromatic liquid of the present invention will be described in detail.

[Aroma liquid weight loss characteristics]
The fragrance solution of the present invention has a residual rate (R) of 50% or less after 144 hours measured under the following test conditions, and has a weight loss rate of _{120 to 144 hours (V 2} ) from a weight loss rate of 0 to 24 hours _{(V 1).} ) Is subtracted, and the value (V _{1 −} V ₂ ) satisfies 1.000 g / day or less. By having such a characteristic, it is possible to have a high average volatilization rate during the period of use and to make it difficult for a difference in fragrance intensity to occur between the early stage of use and the late stage of use.

From the viewpoint of further setting the average volatilization rate during the period of use, the residual rate (R) after 144 hours measured under the following test conditions is preferably 0 to 80%, more preferably 0 to 60%. More preferably, it is 0 to 50%, and particularly preferably 37 to 43%.

Further, from the viewpoint of making it more difficult to cause a difference in fragrance intensity between the first half of use and the second half of use, the value (V _{1 −} V ₂ ) is preferably 0.000 to 0.950 g / day, more preferably. Examples thereof include 0.5000 to 0.950 g / day, more preferably 0.750 to 0.900 g / day, and particularly preferably 0.800 to 0.900 g / day.

The weight loss rate (V ₁ ) for 0 to 24 hours is not particularly limited as long as the residual rate (R) and the value (V ₁ −V ₂ ) after 144 hours satisfy the above-mentioned ranges, but is not particularly limited, for example. Examples thereof include 0.1000 to 5.000 g / day, preferably 0.300 to 3.000 g / day, more preferably 0.300 to 2.000 g / day, and further preferably 0.850 to 1.000 g / day. ..

The weight loss rate (V ₂ ) for 120 to 144 hours is not particularly limited as long as the residual rate (R) and the value (V _{1 −} V ₂ ) after 144 hours satisfy the above-mentioned ranges, but is not particularly limited, for example. 0.010 to 1.000 g / day, preferably 0.020 to 0.500 g / day, more preferably 0.050 to 0.100 g / day, still more preferably 0.075 to 0.100 g / day. ..

The residual rate after 144 hours (R), the weight loss rate of 0 to 24 hours (V ₁ ), and _{the weight loss rate of 120 to 144 hours (V 2} ) are values measured under the following test conditions.
(1) A square liquid absorbing member (liquid absorbing felt; length 40 mm, width 18 mm, thickness 5 mm, density 0.21 g / cm ³ ) placed on a plate is impregnated with 3.5 mL of aromatic liquid. , Let stand in an indoor space at 40 ° C.
(2) At the start of standing, 24 hours, 120 hours, and 144 hours after the start of standing, the weight of the remaining aromatic liquid is determined.
(3) According to the following formula, the residual rate R after 144 hours, the weight loss rate V ₁ for 0 to 24 hours, and the weight loss rate V ₂ for 120 to 144 hours are calculated.
R (%) = (weight of fragrance liquid 144 hours after the start of standing / weight of fragrance liquid at the start of standing) × 100
V ₁ (g / day) = weight of fragrance liquid at the start of standing-weight of fragrance liquid 24 hours after the start of standing V ₂ (g / day) = weight of fragrance liquid 120 hours after the start of standing -Weight of fragrance liquid 144 hours after the start of standing

The material of the liquid absorbing member (felt) used in (1) is not particularly limited, but a composite fiber of 80% by weight of polyethylene terephthalate and 20% by weight of rayon is preferable.

In the above (1), the indoor space at 40 ° C. in which the liquid absorbing member impregnated with the aromatic liquid is placed is indoors (for example, a room of about 10 tatami mats) adjusted to 40 ° C. without being exposed to direct sunlight. , Not in a closed system such as a thermostat.

Further, in (2) above, the weight A (total weight of the liquid absorbing member and the dish) of the dish on which the liquid absorbing member is placed is measured in advance before impregnating with the fragrance liquid, and the fragrance is measured at each measurement timing. The weight B (total weight of the fragrance liquid, the liquid absorbing member and the dish) of the dish on which the liquid absorbing member impregnated with the liquid is placed is measured, and the weight A is subtracted from the weight B to obtain the remaining fragrance liquid. Weight can be calculated.

The above-mentioned weight loss characteristics can be satisfied by appropriately adjusting the content of the fragrance to be blended in the fragrance liquid, the type and content of the solvent, and the like. A person skilled in the art can prepare an aromatic liquid satisfying the weight loss characteristics by adjusting the content of the fragrance, the type and content of the solvent, etc., if the weight loss characteristics to be achieved are determined. ..

[Composition of aromatic liquid]
The fragrance liquid of the present invention contains a fragrance and a solvent.

The fragrance used in the fragrance liquid of the present invention may be any oily fragrance such as a natural fragrance, a single fragrance separated from the natural fragrance, a synthetic single fragrance, or a blended fragrance thereof, and is conventionally known. Fragrances can be used. Specifically, as a single fragrance, hydrocarbon fragrance, alcohol fragrance, ether fragrance, aldehyde fragrance, acetal fragrance, ester fragrance, ketone fragrance, carboxylic acid fragrance, lactone fragrance, musk fragrance , Ester-based fragrances, sulfur-containing fragrances and the like. In addition, as natural fragrances, tuberose oil, muscinki, castorium tincture, civet tincture, amberglist tincture, peppermint oil, perilla oil, petitgrain oil, pine oil, rose oil, rosemary oil, soybean oil, savory oil, clary sage Oil, sandalwood oil, sparemint oil, spike lavender oil, staranis oil, lavandine oil, lavender oil, lemon oil, lemongrass oil, lime oil, neroli oil, oak moss oil, okotia oil, patchouli oil, thyme oil, tonka beans Tinki, terepine oil, crocodile bean tincture, basil oil, nutmeg oil, citronella oil, clove oil, boad rose oil, cananga oil, cardamon oil, cassia oil, cedarwood oil, orange oil, mandarin oil, tangerine oil, anise oil, bay oil , Coriander oil, Elemi oil, eucalyptus oil, fennel oil, galvanum oil, geranium oil, hiba oil, cypress oil, jasmine oil, vetiver oil, bergamot oil, ylang ylang oil, grapefruit oil, yuzu oil and the like. These fragrances may be used alone or in any combination of two or more.

The content of the fragrance in the fragrance liquid of the present invention may be appropriately set within a range satisfying the above-mentioned weight loss characteristics according to the type of fragrance used, the intensity of the fragrance to be exhibited, and the like. For example, 10 to 90 By weight%, preferably 30 to 80% by weight, more preferably 50 to 80% by weight, still more preferably 65 to 75% by weight.

The solvent used in the fragrance liquid of the present invention is not particularly limited as long as it can satisfy the above-mentioned weight loss characteristics, but as a suitable solvent, the vapor pressure at 20 ° C. is 0.005 to 0.040 kPa. Paraffinic hydrocarbons of preferably 0.008 to 0.030 kPa, more preferably 0.009 to 0.020 kPa, and even more preferably 0.010 to 0.013 kPa can be mentioned. By using such a paraffinic hydrocarbon, the above-mentioned weight loss characteristics can be suitably satisfied, and a scent having a desired intensity can be effectively maintained from the first half to the second half of use. ..

Further, for paraffinic hydrocarbons satisfying the vapor pressure range, it is desirable that the initial distillate at normal pressure satisfies 218 to 257 ° C. By using a paraffinic hydrocarbon that satisfies the range of the initial distillation point together with the range of the vapor pressure, the above-mentioned weight loss characteristics can be more preferably satisfied, which is desired from the first half to the second half of use. It is possible to maintain the strong scent of paraffin much more effectively.

The paraffin-based hydrocarbon satisfying the vapor pressure range may be either isoparaffin or normal paraffin, but isoparaffin is preferable.

In the aromatic liquid of the present invention, when a paraffinic hydrocarbon satisfying the vapor pressure range is used as the solvent, another solvent may be contained together with the paraffinic hydrocarbon, but the above-mentioned weight loss characteristics are preferably used. From the viewpoint of sufficiency, 40 parts by weight or more, preferably 60) parts by weight or more, more preferably 80 parts by weight or more, still more preferably, paraffin-based hydrocarbons satisfying the vapor pressure range per 100 parts by weight of the total amount of the solvent. It may occupy 90 parts by weight or more, particularly preferably 100 parts by weight.

The content of the solvent in the fragrance liquid of the present invention may be appropriately set within a range satisfying the above-mentioned weight loss characteristics, and is, for example, 10 to 80% by weight, preferably 20 to 70% by weight, more preferably 20 to 50% by weight. By weight%, more preferably 25 to 35% by weight.

In addition to the above-mentioned components, the fragrance liquid of the present invention may contain other additives as long as the above-mentioned weight loss characteristics are satisfied. Examples of such other additives include thickeners, preservatives, antioxidants, UV absorbers, colorants and the like.

[Vaporizer]
The aromatic liquid of the present invention is used in a mode in which the liquid absorbing member is impregnated and volatilized by using a volatilizer in which the aromatic liquid is not supplied to the liquid absorbing member during use.

The liquid absorbing member impregnated with the aromatic liquid of the present invention and volatilized is not particularly limited as long as the aromatic liquid of the present invention can be absorbed and volatilized. Examples thereof include synthetic fibers such as rayon, polyester and polyethylene terephthalate, or fibrous materials such as mixed fibers thereof; wood materials such as wood pieces, rattan, bamboo and sora; and resin sponge materials made of urethane foam. When the volatilization member is made of a fibrous material, it is preferably a liquid-absorbing felt or a non-woven fabric, but it may be a woven fabric, a knitted fabric, or the like. The shape of the volatilizing member is not particularly limited, and may be any of a sheet shape, a block shape, a rod shape, a strip shape, a string shape, and the like.

The size of the liquid absorbing member may be appropriately set according to the space to be used, and examples thereof include about 1 to ^{20 cm 3.} In particular, in the case of using a liquid fragrance of the present invention for the interior of automobiles, preferably about 1 to 20 cm ^3, more preferably about 2 to 10 cm ^3, about 4～8Cm ³ it is more preferable.

The amount of the fragrance liquid of the present invention impregnated into the liquid absorbing member may be appropriately set according to the type of the liquid absorbing member to be used. For example, the impregnated amount of the liquid absorbing member is 0 per ^{1 cm 3 of the liquid absorbing member.} .05 to 2 ml, preferably 0.1 to 1.0 ml, more preferably 0.3 to 0.7 ml.

The volatilizer for volatilizing the fragrance liquid of the present invention may have a structure in which the liquid absorbing member impregnated with the fragrance liquid of the present invention is housed in a container having an opening. In the volatilizer that volatilizes the fragrance liquid of the present invention, the fragrance liquid in the container is not impregnated in the liquid absorbing member because the fragrance liquid is not supplied to the liquid absorbing member during use (during the volatilization of the fragrance liquid). It is not stored in the state and exists only in the state of being impregnated with the liquid absorbing member.

[Provision mode]
The fragrance liquid of the present invention may be provided as a set with a container and a liquid absorbing member which are constituent members of the volatilizer, and may be provided as a refilling fragrance liquid alone or as a set with the liquid absorbing member. You may.

[Use]
The fragrance liquid of the present invention is used to impart fragrance in spaces such as the interior of an automobile and a living space (living room, entrance, toilet, etc.). The fragrance liquid of the present invention exists in a state in which the liquid absorbing member is completely impregnated in the volatilizer, and does not spill out from the volatilizer even if there is vibration or shaking. Suitable. In addition, the temperature inside the automobile changes greatly, and in the case of an aromatic liquid that volatilizes while sucking up the chemical liquid stored in the volatilizer with a liquid absorbing member, the air in the head space inside the volatilizer expands when the temperature rises. The fragrance liquid may spout out and contaminate the surroundings, but since the fragrance liquid of the present invention exists in a state where all the liquid absorbing members are impregnated in the volatilizer, the fragrance liquid may be ejected to the outside of the volatilizer. Almost none. From this point as well, it can be said that the aromatic liquid of the present invention is suitable for indoor use in automobiles.

2. Volatilizer The volatilizer of the present invention includes the fragrance liquid, a liquid absorbing member, and a container having an opening, and the container contains the liquid absorbing member impregnated with the fragrance liquid. It is characterized in that the fragrance liquid does not exist in a state where the liquid member is not impregnated.

The fragrance liquid, the liquid absorbing member, the container, etc. used in the volatilizer of the present invention are as described in the above-mentioned "1. Aroma liquid" column.

Hereinafter, the present invention will be specifically described with reference to Examples and the like, but the present invention is not limited thereto. The characteristics, sources, etc. of the components used in the following examples and comparative examples are as follows.
・ Fragrance : Rose-like oily fragrance
-Isoparaffin A : Trade name "Isopar M", manufactured by ExxonMobil; vapor pressure at 20 ° C is 0.0115 kPa, initial distillation point is 225 ° C.
-Polyoxyethylene (10) octylphenyl ether : Trade name "Polyoxyethylene (10) octylphenyl ether", (Fuji Film Wako Pure Chemical Industries, Ltd.); Vapor pressure at 20 ° C is 0.001 kPa
-Isoparaffin B : trade name "IP solvent 2835", Idemitsu Kosan Co., Ltd .; vapor pressure at 20 ° C. is 0.002 kPa, initial distillation point is 277 to 353 ° C.
Dipropylene glycol monomethyl ether :: trade name "Dowanol DPM", The Dow Chemical Company; vapor pressure at 25 ° C is 0.053 kPa
-Isoparaffin C : Trade name "Isopar G", (manufactured by ExxonMobil) Co., Ltd .; vapor pressure at 20 ° C is 0.2049 kPa, initial distillation point is 153 to 257 ° C.

Test Example 1
The fragrance liquid shown in Table 1 was prepared, and the weight loss rate was measured in a state where the liquid absorbing member was impregnated. Specifically, under the following test conditions, the residual rate (R) after 144 hours, the weight loss rate (V ₁ ) of 0 to 24 hours, and the weight loss rate (V ₂ ) of 120 to 144 hours were measured, and 0 to 0. The value (V _{1 −} V ₂ ) obtained by subtracting the weight loss rate (V ₂ ) for 120 to 144 hours from the weight loss rate (V ₁ ) for 24 hours was obtained.
(1) A rectangular liquid-absorbing member (felt having liquid-absorbing property; length 40 mm, width 18 mm, thickness 5 mm, density 0.12 g / m ³ , polyethylene terephthalate 80% by weight and rayon 20 weight) placed on a plate. % Composite fiber; trade name "E-6H", manufactured by Yoneshima Felt Sangyo Co., Ltd.) is impregnated with 3.5 mL of aromatic liquid, and the temperature condition is 40 ° C in a room not exposed to direct sunlight (a room of about 10 tatami mats). It was left still.
(2) At the start of standing, 24 hours, 120 hours, and 144 hours after the start of standing, the weight of the dish on which the liquid absorbing member impregnated with the aromatic liquid is placed is measured, and the dish and the liquid absorbing member ( The weight of the fragrance liquid impregnated in the liquid absorbing member was determined by subtracting the weight of the fragrance liquid not impregnated).
(3) According to the following formula, the residual rate R after 144 hours, the weight loss rate V ₁ for 0 to 24 hours, and the weight loss rate V ₂ for 120 to 144 hours were calculated.
R (%) = (weight of fragrance liquid 144 hours after the start of standing / weight of fragrance liquid at the start of standing) × 100
V ₁ (g / day) = weight of fragrance liquid at the start of standing-weight of fragrance liquid 24 hours after the start of standing V ₂ (g / day) = weight of fragrance liquid 120 hours after the start of standing -Weight of fragrance liquid 144 hours after the start of standing

In addition, in the above test, the following criteria were determined by one expert panelist trained in scent evaluation regarding the scent intensity at the start of the test and the difference in scent intensity between the start of the test and 144 hours later. Was evaluated by.

<Intensity of scent at the start of the test>
◯: Fully feel the scent.
×: I feel the scent, but it is a little weak and unsatisfactory.

<Difference in scent intensity between the start of the test and 144 hours later>
◯: The intensity of the scent after 144 hours was slightly weaker than that at the start of the test, but there was no significant difference in the intensity of the scent between the start of the test and 144 hours.
X: The intensity of the scent after 144 hours was clearly weaker than that at the start of the test, and a large difference in the intensity of the scent was felt between the start of the test and 144 hours.

The results are shown in Table 1. In the fragrances of Comparative Examples 1 and 2, the value (V _{1 −} V ₂ ) was 1.000 g / day or less, and it was used in the first half (up to 24 hours) and the second half (from 120 hours to 144 hours). The difference in the weight loss rate of the fragrance liquid was small, and it was possible to suppress the weakening of the fragrance in the latter half of use, but the residual rate (R) after 144 hours exceeded 50%, and the average volatilization rate during the use period (that is, that is). , The average volatilization amount of fragrance per unit time) was low. Further, in the fragrances of Comparative Examples 3 and 4, the residual rate (R) after 144 hours was 50% or less, and the average volatilization rate during the use period was high, but the value (V _{1 −} V ₂ ) was 1. It exceeded 000 g / day, and there was a strong tendency for the scent to become weaker in the latter half of use than in the first half of use. On the other hand, in the fragrance solution of Example 1, the residual rate (R) after 144 hours was 50% or less, the average volatilization rate during the use period was high, and the value (V _{1 −} V ₂ ) was 1. It was 000 g / day or less, the difference in the weight loss rate of the fragrance liquid was small between the first half of use and the second half of use, and it was possible to suppress the weakening of the scent in the latter half of use.

Claims (5)

It is an aromatic liquid used in a volatilizer that is impregnated into a liquid absorbing member and volatilized, and the aromatic liquid is not supplied to the liquid absorbing member during use.
Contains fragrances and solvents
The residual rate (R) after 144 hours measured under the following test conditions is 50% or less, and the weight loss rate (V ₁ ) of 0 to 24 hours _{minus the weight loss rate (V 2} ) of 120 to 144 hours. Aroma liquid having a value of 1.000 g / day.
<Test conditions>
(1) A square liquid absorbing member (felt; length 40 mm, width 18 mm, thickness 5 mm, density 0.21 g / cm ³ ) placed on a plate is impregnated with 3.5 mL of aromatic liquid and indoors at 40 ° C. Stand still in space.
(2) At the start of standing, 24 hours, 120 hours, and 144 hours after the start of standing, the weight of the remaining aromatic liquid is determined.
(3) According to the following formula, the residual rate R after 144 hours, the weight loss rate V ₁ for 0 to 24 hours, and the weight loss rate V ₂ for 120 to 144 hours are calculated.
R (%) = (weight of fragrance liquid 144 hours after the start of standing / weight of fragrance liquid at the start of standing) × 100
V ₁ (g / day) = weight of fragrance liquid at the start of standing-weight of fragrance liquid 24 hours after the start of standing V ₂ (g / day) = weight of fragrance liquid 120 hours after the start of standing -Weight of fragrance liquid 144 hours after the start of standing The aromatic solution according to claim 1, wherein the solvent is a paraffinic hydrocarbon having a vapor pressure of 0.005 to 0.040 kPa at 20 ° C. The fragrance solution according to claim 1 or 2, which contains 20 to 90% by weight of a fragrance and 10 to 80% by weight of a solvent. The aromatic liquid according to any one of claims 1 to 3, which is used indoors of an automobile. The fragrance liquid according to any one of claims 1 to 4, a liquid absorbing member, and a container having a vent hole are included.
The container is contained with the liquid absorbing member impregnated with the aromatic liquid.
The fragrance liquid does not exist in a state where the liquid absorbing member is not impregnated.
Volatilizer.