JPH027666B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention provides an excellent deodorizing effect with a reduced amount of use, even though the deodorant itself does not have an unpleasant odor and does not have a strong gradient due to the masking effect unlike so-called masking deodorants. It exhibits an odor effect and exhibits excellent deodorizing effect sustainability, and also,
It can exhibit an improved deodorizing effect on a wide range of complex odor targets such as sulfur-containing, nitrogen-containing, and oxygen-containing odor targets, and also does not have a strong gradient like masking deodorants. It has excellent applicability and can be applied advantageously to a wide range of locations and targets with bad odors.
Therefore, if desired, any aromatic ingredients may also be included.
The present invention relates to a deodorizing liquid agent which also has the advantage that it can be further contained without causing any unfavorable change in its fragrance. More specifically, (a) octyl crotonate and (b) a terpene-based cyclic hydrocarbon compound of the present invention are combined into (a): (b)
=1: It relates to a deodorizing liquid containing octyl crotonate as an active ingredient in an amount ratio of about 2 to about 20 (weight ratio). Conventionally, there have been chemical deodorants (reactive deodorants) that exert a deodorizing effect by chemically reacting with malodorous components, or chemical deodorants that do not exhibit a chemical deodorizing effect by themselves but have a strong odor effect. Masking deodorants that exhibit deodorizing effects through masking effects are known, and various proposals have been made. However, as a chemical deodorant, even if the deodorizing component is theoretically capable of reacting with malodorous components, in reality, the desired reaction does not take place sufficiently, resulting in a practically satisfactory deodorizing effect. It is common that chemical deodorants cannot be obtained or that there are restrictions on the target odor that shows their reactivity, and furthermore, there are disadvantages such as the fact that chemical deodorants themselves have bad or unpleasant odors.On the other hand, masking deodorants has a strong gradient derived from its masking effect, and when used in an amount that can exert a sufficient masking deodorizing effect, there are significant restrictions on where it can be applied, and it must be used in an amount that avoids this. However, there is usually a problem in which a satisfactory masking effect cannot be achieved. Although it is possible to use these two types of deodorizing ingredients in combination, it is difficult to avoid defects in either or both of them.
The reality is that satisfactory results cannot be obtained. The present inventors have conducted research to develop a deodorizing liquid that can solve the above-mentioned technical problems. As a result, the combination of the known compound octyl crotonate, which has a rather strong burnt-like odor that is unpleasant by itself, and a terpene-based hydrocarbon compound, particularly preferably a terpene-based cyclic hydrocarbon compound, can reduce the unpleasantness of octyl crotonate. It is odorless, and the combination agent itself does not exhibit unpleasant odors or the strong gradient characteristic of so-called masking deodorants, and despite this, it has an excellent deodorizing effect on a wide range of offensive odors. We have discovered that it is a unique deodorant liquid that exhibits excellent deodorizing effect and long-lasting deodorizing effect. Furthermore, the above-mentioned unique deodorizing effect achieved by the combination of the octyl crotonate and a terpene-based hydrocarbon compound, particularly preferably a terpene-based cyclic hydrocarbon compound, changes depending on the proportion of their combination. : It has been discovered that the weight ratio of terpene hydrocarbon compounds, particularly terpene cyclic hydrocarbon compounds, is preferably in the range of 1:2 to about 20. Therefore, according to the research of the present inventors, (a) octyl crotonate and (b) a terpene-based cyclic hydrocarbon compound are mixed at a ratio of (a):(b)=1:about 2 to about 20 (weight ratio ), the deodorant liquid containing octyl crotonate as an active ingredient not only has an unpleasant odor but also has the strong masking characteristic of masking deodorants. Although it has no odor, it exhibits an excellent deodorizing effect with a reduced amount of use, and has excellent deodorizing effect sustainability. It has an improved deodorizing effect on targets with bad odors, and it does not have a strong masking odor like masking deodorants, so it can be applied in a wide range of places and can be applied advantageously to targets with bad odors. It is possible to provide a deodorizing liquid agent that has the following properties and also has the advantage of being able to further contain any aromatic component, if desired, without causing any unfavorable change in the aroma. I understood. Although it is still not clear what kind of deodorizing action mechanism causes the above-mentioned unexpected deodorizing effect of the combination of ingredients (a) and (b), the results of many comparative tests were later shown in examples. As shown in both figures, it has been found that it is difficult to obtain the unique deodorant effect of the present invention when each of these components is used alone or in amounts different from the above-mentioned proportions. Accordingly, it is an object of the present invention to provide improved deodorants containing octyl crotonate. The above objects and many other objects and advantages of the present invention will become more apparent from the following description. The deodorizing liquid of the present invention contains (a) as an essential active ingredient;
Contains a combination of octyl crotonate and (b) terpene hydrocarbons, particularly terpene cyclic hydrocarbon compounds, and contains these two essential components (a): (b)
=1: Contained in an amount ratio of about 2 to about 20 (weight ratio). By satisfying the combination conditions of (a) and (b) above and their quantity ratio conditions,
The rather strong unpleasant burnt-like odor of octyl crotonate itself was markedly reduced, and the gradient of the (ro)terpene-based cyclic hydrocarbon compound was also reduced. Although there are differences depending on the type and amount of compounds, as a deodorant liquid itself consisting of a combination of (a) and (b),
It has a faint and mild fragrance, but it does not have any unpleasant odor or the strong gradient characteristic of masking deodorants, but it exhibits an excellent deodorizing effect with a reduced amount of usage. Furthermore, the deodorizing effect exhibits excellent durability. In the deodorizing liquid agent of the present invention, in addition to the combination of (a) and (b) above, the ratio of the amounts of (a) to (b) above is also important. If the proportion of the hydrocarbon compound is too small, not only will the deodorizing liquid have an unpleasant odor derived from (a) octyl crotonate, but there will also be a tendency for the deodorizing effect to be substantially reduced; Furthermore, if the proportion of the terpene-based cyclic hydrocarbon compound is too large outside the above-mentioned proportion range, the deodorizing effect will deteriorate. Therefore, in the present invention, the amounts and ratios of the above (a) and (b) are appropriately selected. Examples of the above (b) terpene-based cyclic hydrocarbon compounds include α-pinene, β-pinene, limonene, p-
Preferred examples include menthane, α-terpinene, terpinolene, sabinene, carene, camphene, pizzaborene, humulene, elemene, and caryophyllene. These can be used alone or in combination. Further, these terpene-based cyclic hydrocarbon compounds may be isolated from natural essential oils or synthesized, and furthermore, they can be used in the form of natural essential oils containing a high content. Among the above-mentioned terpene-based cyclic hydrocarbon compounds, it is more preferable to use at least one compound selected from the group consisting of pinenes, limonenes, and essential oils containing them. Further, in the present invention, an acyclic terpene hydrocarbon compound can be used in combination with the above-mentioned (b) terpene hydrocarbon compound. Preferred examples of such other hydrocarbon compounds include myrcene, dihydromircene, farnesene, and ocimene. These are not limited to one type, but multiple types can be used. The amount of these used can be selected as appropriate, but an example of the amount used is about 5 to about 20% by weight based on the (ro)terpene cyclic hydrocarbon compound. The octyl crotonate-containing deodorant liquid of the present invention is
It may further contain a suitable solvent. Examples of such solvents include dialkylene glycol monoalkyl ether, alkylene glycol monoalkyl ether, dialkylene glycol, and alkylene glycol. These can be used alone or in combination. Among the above-mentioned exemplified solvents, use of dialkylene glycol monoalkyl ether is more preferable.
Specific examples of such solvent dialkylene glycol monoalkyl ethers include diethylene glycol monoalkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, diethylene glycol pentyl ether, diethylene glycol monohexyl ether, etc. can be preferably exemplified. These can be used alone or in combination. Among the above examples, diethylene glycol monobutyl ether and diethylene glycol monopentyl ether are more preferably used. In the present invention, when using the above-mentioned solvent, the amount to be used can be selected as appropriate, but for example, the amount (by weight) is about 1 to about 5 times the total amount (by weight) of (a) and (b). For example, the usage amount may be as follows. The octyl crotonate-containing deodorant liquid of the present invention is
Other additives may also be included, such as sterilizing and/or preservatives, perfumes and other flavoring agents. Examples of such additives include alkylene glycols such as triethylene glycol, propylene glycol, hexylene glycol, etc.; bersalkonium chloride;
Benzethonium chloride, other antibacterial soaps; and various other fragrances;
These fragrances are suitable for cases in which a desired fragrance can be enjoyed at the same time as an indoor deodorizing effect, if desired. In this case, since the deodorant liquid of the present invention does not itself have a strong gradient like a masking deodorant, it has the advantage of being able to contain any aromatic component without causing any undesirable changes in its aroma. be. The octyl crotonate-containing deodorant liquid of the present invention is
(a) Octyl crotonate and (b) terpene-based cyclic hydrocarbon compound, (a): (b) = 1: about 2 to about 20 (weight ratio)
If desired, it can be prepared by mixing with other components and/or other additives as described above. The deodorizing liquid of the present invention may be prepared at any concentration, and the stock solution composition may be prepared as a concentrated solution.
It can be diluted appropriately before use,
Alternatively, a stock solution composition can be prepared from the beginning with a concentration suitable for each source to be deodorized. Therefore, the total amount of (a) octyl crotonate and (b) terpene-based cyclic hydrocarbon compound in the composition can be varied. 1:9
A range of ~1:0.1 is most often used,
The ratio is preferably about 1:3 to about 1:0.2. Of course, it can be changed as appropriate depending on the type of malodor of the object to be treated, the concentration at the time of application, etc., and it is also possible to form a concentrated liquid that exceeds the above range. Normally, the source of malodor is rarely a single odor, and the actual source of malodor is usually a complex and diverse system of complex malodor-producing compounds, such as adsorption of a single malodorous compound or chemical It is well known that it is not possible to argue based only on target capture. Even for a single malodor that is thought to have been effectively captured through chemical analysis, panel tests often yield unsatisfactory results. Measuring the amount of adsorption or chemical capture alone
Predicting its deodorizing effect is impossible even for the most outstanding experts in the same technical field. The deodorizing liquid of the present invention exhibits excellent deodorizing effects against a wide range of complex malodor targets, and as shown later in Examples and Comparative Examples, the present invention has been shown to be effective against a single malodor source. On the other hand, the use of octyl crotonate and terpene-based cyclic hydrocarbon compounds alone showed a deodorizing effect that was not expected, and furthermore, it showed a significantly superior deodorizing effect against the combined odor of these odor sources. It can be seen that this shows that Specific examples of malodor sources suitable for use with the deodorizing liquid of the present invention include processing factories for fish iliac bones, cow bones, fluff, etc., fertilizer and feed factories, food processing factories, leather factories, various livestock and poultry factories, etc. Feed farms and human waste treatment plants, human waste, sewage, and garbage treatment plants for cities, homes, factories, etc.
Sources of malodors include sulfur-containing compounds, nitrogen-containing compounds, and/or oxygen-containing compounds in factories for plastics, rubber, pulp, oils and fats, petrochemicals, and the like. It can also be used to deodorize rooms such as homes and cars, livestock and poultry, and livestock and poultry houses. The deodorizing liquid composition of the present invention may be directly removed or added to the source of the bad odor, or the vapor phase bad odor may be deodorized by passing through the liquid composition, or alternatively, it may be deodorized by passing it through the liquid composition. A packed bed impregnated with a carrier can be used in various forms such as granules, gels, pellets, and powders, depending on the purpose of passing gaseous odor or other purposes. The present invention will be explained in more detail with reference to comparative examples and examples below. Examples 1 to 4 The malodor source solutions used in Examples and Comparative Examples are shown below. (A) 0.06% ammonia aqueous solution (B) Hydrogen sulfide saturated aqueous solution: water = 1:170 (C) 0.001% trimethylamine aqueous solution (D) 0.01% pyridine aqueous solution (E) 0.003% ethyl mercaptan aqueous solution The following evaluation method was used. 20 g of each malodor source solution was placed in a 100 c.c. glass pin, 0.4 cc (2%) of the deodorizing liquid composition was added, and the deodorizing effect after 3 hours was evaluated by a panel. The members of the panel are as follows.

[Table] The evaluation is based on the following grades, and the arithmetic mean of the total of all panelists for the grade according to the above evaluation divided by the number of panelists (the second decimal place is rounded to 50
) to determine the average grade. Grade 5 Strong odor. 4 Strong odor. 3 Bad odor that is easily felt. 2. Weak odor. 1 Very faint odor. 0 Virtually odorless. Therefore, regarding the malodor source, Example 1 is octyl crotonate + myrcene (1:2), and Example 2 is octyl crotonate + lyonene (1:2).
15), as Example 3, octyl crotonate + α-
Diethylene glycol monobutyl ether was added to each of pinene (1:20) and octyl crotonate + lemon oil (1:10) as Example 4.The total amount of octyl crotonate and the above terpene-based cyclic hydrocarbon compounds (including natural essential oils) A deodorizing liquid composition (10% ethanol solution) was prepared by adding twice the weight of the deodorizing liquid composition (10% ethanol solution), and after adding it to the above malodor source, a sensory evaluation was conducted by a panel, and the results shown in Table 1 were obtained. In addition, as comparative examples, the same procedure as above was carried out for the cases where the amount of octyl crotonate was increased, and the amount of limonene was increased, and the results shown in Table 1 were obtained.

【table】

[Table] From the results in Table 1 above, it can be seen that the combined use of octyl crotonate and terpene hydrocarbon compound in the composition of the present invention exhibits an outstanding synergistic deodorizing effect that is not expected from their sole use. . Example 5 Two types of deodorant liquid compositions of the present invention were prepared according to the following formulations.

[Table] The above deodorizing liquid composition was used as the odor source (A), (B), (C), (D).
A panel test was conducted on the deodorizing effect after 3 hours of adding and mixing 2% to (E) and (E). Table the results.
Shown in 2. Example 6 In order to test the deodorizing effect on composite malodor sources, a 2% aqueous solution of the composite malodor source with the following composition was prepared, 2% of the deodorizing liquid α of Example 5 was added, and after the deodorizing operation, We conducted an odor panel test. The results are shown in Table-2. Complex malodor source Sibet 40 parts (wt) Skirt 1% (DPG) 2 Indole 10% (DPG) 2 N-Valeric acid 1% (H ₂ O) 1 Ammonia water (28%) 7 Ethyl mercaptan 1% (ethanol)
0.5 Surfactant 47.5 100 parts

【table】

Claims (1)

[Claims] 1 (a) octyl crotonate and (b) a terpene-based cyclic hydrocarbon compound in an amount ratio of (a):(b)=1:about 2 to about 20 (weight ratio), A deodorant liquid containing octyl crotonate as an active ingredient. 2. The deodorizer according to claim 1, wherein the (b) terpene-based cyclic hydrocarbon compound is at least one compound selected from the group consisting of pinenes, limonenes, and essential oils containing them. Liquid agent. 3. The deodorant liquid according to claim 1, further comprising a solvent dialkylene glycol monoalkyl ether.