阅读说明：本技术 沥青、污泥、污水、银杏、堆肥、海洋动物、蔬菜、垃圾或涂料的气味的转变用臭气转变剂和沥青、污泥、污水、银杏、堆肥、海洋动物、蔬菜、垃圾或涂料的气味的臭气转变方法 (Odor conversion agent for conversion of odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animal, vegetable, garbage or coating, and odor conversion method for conversion of odor of asph) 是由 包旭旭 辻本裕 山本芳邦 肥下隆一 于 2018-11-27 设计创作，主要内容包括：本发明提供一种臭气转变剂和臭气转变方法,上述臭气转变剂能够将沥青、污泥、污水、银杏、堆肥、海洋动物、蔬菜、垃圾或涂料的气味转变为不同的气味,容易地解决由这些气味导致的危害。本发明提供一种臭气转变剂,其为沥青、污泥、污水、银杏、堆肥、海洋动物、蔬菜、垃圾或涂料的气味的转变用臭气转变剂,上述臭气转变剂的特征在于,含有选自呋喃化合物、吡喃化合物和环戊酮衍生物中的至少一种含氧环状化合物。(The present invention provides an odor converting agent and an odor converting method, which can convert the odor of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage or paint into various odors, and easily solve the harm caused by the odors. The present invention provides an odor conversion agent for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint, the odor conversion agent being characterized by containing at least one oxygen-containing cyclic compound selected from furan compounds, pyran compounds and cyclopentanone derivatives.)

1. An odor converting agent for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint, said odor converting agent characterized by:

contains at least one oxygen-containing cyclic compound selected from furan compounds, pyran compounds and cyclopentanone derivatives.

2. The odor converting agent of claim 1 wherein:

the content of the oxygen-containing cyclic compound is 0.1 to 20% by mass, based on 100% by mass of the odor conversion agent.

3. The odor converting agent as claimed in claim 1 or 2, wherein:

the furan compound is selected from furanone, furfural, 5-methylfurfural, furfuryl mercaptan, furfuryl alcohol, 2-propionyl furan, 2-ethyl furan, menthofuran, 2-methyl-3-furanthiol, 2-methyl-3-tetrahydrofuranthiol, 2-methyl-4, 5-dihydro-3-furanthiol, 2-methylfuran, 2-methyltetrahydrofuran, 2-hexanoylfuran, 2-pentylfuran, 2-propylfuran, 2- (3-phenylpropyl) tetrahydrofuran, 2, 3-dihydrobenzofuran, 2, 4-dimethyl-4-phenyltetrahydrofuran, 2-furfuryl-5-methylfuran, 2-heptylfuran, 2-methylbenzofuran, 2-methylfuran, 2-ethylfuran, 2-methylfuran, 2-, 2-methyl-5-propionylfuran, 2- (5-vinyl-5-methyltetrahydrofuran-2-yl) -propionaldehyde, 3- { [ 2-methyl- (2 or 4), 5-dihydro-3-furanyl ] thio } -2-methyltetrahydrofuran-3-thiol, 2-vinyl-5-isopropenyl-2-methyltetrahydrofuran, 5-methyl-2-furanmethanethiol, 6-methyl-2, 3-dihydrothieno [2,3-c ] furan, 2, 5-dimethoxytetrahydrofuran, 3-acetyl-2, 5-dimethylfuran, 2-acetyl-5-methylfuran, 2-methyl-2, 3-dihydrothieno [2,3-c ] furan, 2, 5-dimethoxytetrahydrofuran, 3-acetyl-2, 5-dimethylfuran, 2-acetyl-5-, At least one of 2-acetylfuran, 2-butylfuran, 2, 5-diethyltetrahydrofuran, difurfuryl disulfide, difurfuryl ether, difurfuryl sulfide and 2, 5-dimethyl-3-furanthiol.

4. The odor converting agent according to any one of claims 1 to 3, wherein:

the odor converting agent is 100% by mass, and the content of the furan compound is 0.8-5% by mass.

5. The odor converting agent as claimed in any one of claims 1 to 4, wherein:

the pyran compound is selected from maltol, ethyl maltol, 4-acetoxy-3-pentyltetrahydropyran, 3, 5-dihydroxy-6-methyl-2, 3-dihydro-4 (4H) -pyrone, 6-vinyl-2, 2, 6-trimethyltetrahydropyran, 5-methyl-3-butyltetrahydropyran-4-ylacetate, octahydro-2H-1-benzopyran-2-one, 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran, theaspirane, grapospirane, (2S,4aR,8aS) -2,5,5,8 a-tetramethyl-3, 4,4a,5,6,8 a-hexahydro-2H-1-benzopyran, At least 1 of 6-vinyl-2, 2, 6-trimethyltetrahydro-3 (4H) -pyrone, 6-hydroxydihydrotheaspirane, 6-acetoxydihydrotheaspirane, and 2, 6-diethyl-5-isopropyl-2-methyltetrahydro-2H-pyran.

6. The odor converting agent according to any one of claims 1 to 5, wherein:

the amount of the pyran compound is 5-20% by mass based on 100% by mass of the odor converting agent.

7. The odor converting agent according to any one of claims 1 to 6, wherein:

the cyclopentanone derivative is selected from cyclopentanone, methylcyclopentenol ketone acetate, methylcyclopentenol ketone propionate, methylcyclopentenol ketone butyrate, methylcyclopentenol ketone isobutyrate, 2-geranylcyclopentanone, 2-hexylcyclopentanone, 2-hexylenecyclopentanone, 2-cyclopentylcyclopentanone, 2-pentyl-2-cyclopentenone, 3-methyl-2-pentyl-2-cyclopentenone, 3-ethyl-2-hydroxy-2-cyclopentenone, 2-hydroxy-3, 4-dimethyl-2-cyclopentenone, 2-methyl-3- (2-pentenyl) -2-cyclopentenone, 3-methyl-2- (cis-2-pentenyl) -2-cyclopentenone, methyl-2- (2-pentenyl) -2-cyclopentenone, methyl-2-pentenone, methyl-2-pentenyl-2-cyclopentenone, methyl-2-pentenyl-2-pentenone, at least 1 of 3-methyl-2- (trans-2-pentenyl) -2-cyclopentenone, 3-methyl-2-cyclopentenone, 3-ethyl-2-hydroxy-4-methyl-2-cyclopentenone, 2-hexyl-2-cyclopentenone, and 2, 3-dimethyl-2-cyclopentenone.

8. The odor converting agent as claimed in any one of claims 1 to 7, wherein:

the odor converting agent is 100% by mass, and the content of the cyclopentanone derivative is 0.1-5% by mass.

9. The odor converting agent as claimed in any one of claims 1 to 8, wherein:

also contains vanillin compounds.

10. The odor converting agent of claim 9 wherein:

the vanillin aldehyde compound is at least one selected from vanillin, ethyl vanillin, acetaldehyde ethyl vanillin acetal, vanillin acetate, ethyl vanillin isobutyrate, vanillone, vanillic acid ethyl ester, ethyl vanillin propylene glycol acetal, vanillic acid methyl ester, vanillic acid, vanillin isobutyrate, vanillic acid butyl ester, vanillin 2, 3-butanediol acetal and vanillin lactate.

11. The odor converting agent as set forth in claim 9 or 10, characterized in that:

the odor converting agent is 100% by mass, and the content of the vanillin-based compound is 10-20% by mass.

12. The odor converting agent as claimed in any one of claims 1 to 11, wherein:

also contains pyridine.

13. The odor converting agent of claim 12 wherein:

the pyridine is at least one selected from the group consisting of 2-acetylpyridine, 3-acetylpyridine, 4-acetylpyridine, 2-acetyl-1, 4,5, 6-tetrahydropyridine, 2-acetyl-4-isopropenylpyridine, 4-acetyl-2-isopropenylpyridine, 2-acetyl-4-isopropylpyridine, 3, 5-dimethyl-4, 5,6, 7-tetrahydrothieno [3,2-c ] pyridine, and 2-acetyl-3, 4,5, 6-tetrahydropyridine.

14. The odor converting agent as claimed in any one of claims 1 to 13, wherein:

also contains pyrazines.

15. The odor converting agent of claim 14 wherein:

the pyrazine is selected from 2-methylsulfanyl-3-methylpyrazine, 2-methoxy-3-methylpyrazine, 2-ethyl-3 (5/6) dimethylpyrazine, 2-ethyl-3-methylpyrazine, 2-methoxy-5-methylpyrazine, 2-acetyl-3, (5/6) -dimethylpyrazine, 2-acetyl-3-ethylpyrazine, 2-acetyl-3-methylpyrazine, acetylpyrazine, 2- (furfurylthio) - (3/5/6) -methylpyrazine, 2-methyl- (5/6) - (methylthio) pyrazine, 2-ethyl-3- (methylthio) pyrazine, 2-isopropyl-3- (methylthio) pyrazine, and mixtures thereof, 2-sec-butyl-3-methoxypyrazine, 2-ethoxy- (3/5/6) -methylpyrazine, 2-ethoxy-3-ethylpyrazine, 2-ethoxy-3-isopropylpyrazine, 2-ethyl-3-methoxypyrazine, 2-hexyl-3-methoxypyrazine, 2-isobutyl-3-methoxypyrazine, 2-isopropoxy-3-methylpyrazine, 2-isopropyl- (3/5/6) -methoxypyrazine, 2-methoxy- (5/6) -methylpyrazine, 2-methoxy-3, 5-dimethylpyrazine, 2-isopropyl-3-methoxypyrazine, At least one of methoxypyrazine, 2-methyl-6-propoxypyrazine, 2-ethoxy- (5/6) -methylpyrazine, 2-ethoxy-3-ethylpyrazine, 2-ethoxy-3-isopropylpyrazine, 2-hexyl-3-methoxypyrazine, and 2- (hydroxymethyl) -5-methylpyrazine.

16. A method for odor conversion, characterized in that:

an odor converting agent containing at least one oxygen-containing cyclic compound selected from furan compounds, pyran compounds and cyclopentanone derivatives is used for substances responsible for the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or coating, and/or in the place of formation of these odors.

Technical Field

The invention relates to an odor converting agent for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or coating and an odor converting method for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage (raw ゴミ, garpage) or coating.

Background

At present, malodors generated in various fields such as daily life are problematic.

As such malodors, in particular, odors of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage, or paint become problematic, and it is desired to eliminate the hazards of these malodors.

As a means for improving odor, there is disclosed a deodorant composition characterized by comprising a colored compound obtained by reacting a polyphenol in a solvent exhibiting alkalinity in the presence of oxygen molecules at a pH of 6.5 or more during the reaction, and using the deodorant composition as an active ingredient for deodorizing malodor (for example, see patent document 1).

However, there are problems as follows: the above odor is not easily eliminated, and even when a deodorizing agent for deodorizing by eliminating the above odor is used, the odor cannot be sufficiently eliminated.

Therefore, development of a means capable of solving the problems caused by the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paints has been sought.

Disclosure of Invention

Problems to be solved by the invention

The present invention aims to provide an odor converting agent and an odor converting method, which can convert the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint into various odors, and easily solve the hazards caused by these odors.

Means for solving the problems

As a result of intensive studies repeated by the inventors of the present invention, it has been found that unpleasant feelings caused by these malodors can be sufficiently reduced by using an odor converting agent which converts the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint into a different odor so that it does not feel other unpleasant odors. The present inventors have also found that a malodour converting agent for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint can convert malodour into another odor by using the agent for converting the odor and/or using the agent at a place where the odor is formed, and that unpleasant feeling can be easily reduced, and have completed the present invention.

That is, the present invention relates to an odor converting agent for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animal, vegetable, garbage or paint, and an odor converting method for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animal, vegetable, garbage or paint.

1. An odor converting agent for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint, characterized by containing at least one oxygen-containing cyclic compound selected from furan compounds, pyran compounds and cyclopentanone derivatives.

2. The odor converting agent according to item 1, wherein the content of the oxygen-containing cyclic compound is 0.1 to 20% by mass, based on 100% by mass of the odor converting agent.

3. The odor converting agent according to claim 1 or 2, wherein the furan compound is a compound selected from the group consisting of furanone, furfural, 5-methylfurfural, furfuryl thiol, furfuryl alcohol, 2-propionyl furan, 2-ethyl furan, menthyl furan, 2-methyl-3-furanthiol, 2-methyl-3-tetrahydrofuranyl thiol, 2-methyl-4, 5-dihydro-3-furanthiol, 2-methyl furan, 2-methyl tetrahydrofuran, 2-hexanoyl furan, 2-pentyl furan, 2-propyl furan, 2- (3-phenylpropyl) tetrahydrofuran, 2, 3-dihydrobenzofuran, 2, 4-dimethyl-4-phenyl tetrahydrofuran, 2-furfuryl-5-methyl furan, 2-methyl-3-methyl furan, 2 methyl-4-methyl furan, 2, 2-heptylfuran, 2-methylbenzofuran, 2-methyl-5-propionylfuran, 2- (5-vinyl-5-methyltetrahydrofuran-2-yl) -propionaldehyde, 3- { [ 2-methyl- (2 or 4), 5-dihydro-3-furanyl ] thio } -2-methyltetrahydrofuran-3-thiol, 2-vinyl-5-isopropenyl-2-methyltetrahydrofuran, 5-methyl-2-furanmethanethiol, 6-methyl-2, 3-dihydrothieno [2,3-c ] furan, 2, 5-dimethoxytetrahydrofuran, 3-acetyl-2, 5-dimethylfuran, 2-methyl-2, 3-dimethylfuran, 2-methyl-3-furanyl-3-thioxo, 2, 5-dimethoxytetrahydrofuran, 2-methyl-2, 5-dimethylfuran, 2-methyl-5-carboxylic acid, At least one of 2-acetyl-5-methylfuran, 2-acetylfuran, 2-butylfuran, 2, 5-diethyltetrahydrofuran, difurfuryl disulfide, difurfuryl ether, difurfuryl sulfide and 2, 5-dimethyl-3-furanthiol.

4. The odor converting agent according to any one of claims 1 to 3, wherein the content of the furan compound is 0.8 to 5% by mass, based on 100% by mass of the odor converting agent.

5. The odor converting agent aS described in any one of items 1 to 4, wherein the pyran compound is selected from the group consisting of maltol, ethyl maltol, 4-acetoxy-3-pentyltetrahydropyran, 3, 5-dihydroxy-6-methyl-2, 3-dihydro-4 (4H) -pyrone, 6-vinyl-2, 2, 6-trimethyltetrahydropyran, 5-methyl-3-butyltetrahydropyran-4-ylacetate, octahydro-2H-1-benzopyran-2-one, 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran, theaspirane, graprospirane, (2S,4aR,8aS) -2,5, at least 1 of 8 a-tetramethyl-3, 4,4a,5,6,8 a-hexahydro-2H-1-benzopyran, 6-vinyl-2, 2, 6-trimethyltetrahydro-3 (4H) -pyrone, 6-hydroxydihydrotheaspirane, 6-acetoxydihydrotheaspirane and 2, 6-diethyl-5-isopropyl-2-methyltetrahydro-2H-pyran.

6. The odor converting agent according to any one of claims 1 to 5, wherein the content of the pyran compound is 5 to 20% by mass, based on 100% by mass of the odor converting agent.

7. The odor converting agent according to any one of claims 1 to 6, wherein the cyclopentanone derivative is a derivative selected from the group consisting of cyclopentanone, methylcyclopentenol ketone acetate, methylcyclopentenol ketone propionate, methylcyclopentenol ketone butyrate, methylcyclopentenol ketone isobutyrate, 2-geranylcyclopentanone, 2-hexylcyclopentanone, 2-hexylenecyclopentanone, 2-cyclopentylcyclopentanone, 2-pentyl-2-cyclopentenone, 3-methyl-2-pentyl-2-cyclopentenone, 3-ethyl-2-hydroxy-2-cyclopentenone, 2-hydroxy-3, 4-dimethyl-2-cyclopentenone, 2-methyl-3- (2-pentenyl) -2-cyclopentenone, At least 1 of 3-methyl-2- (cis-2-pentenyl) -2-cyclopentenone, 3-methyl-2- (trans-2-pentenyl) -2-cyclopentenone, 3-methyl-2-cyclopentenone, 3-ethyl-2-hydroxy-4-methyl-2-cyclopentenone, 2-hexyl-2-cyclopentenone and 2, 3-dimethyl-2-cyclopentenone.

8. The odor converting agent according to any one of claims 1 to 7, wherein the content of the cyclopentanone derivative is 0.1 to 5% by mass, based on 100% by mass of the odor converting agent.

9. The odor converting agent according to any one of claims 1 to 8, further comprising a vanillin-based compound.

10. The odor converting agent according to item 9, wherein the vanillin-based compound is at least one selected from vanillin, ethyl vanillin, acetaldehyde ethyl vanillin acetal, vanillin acetate, ethyl vanillin isobutyrate, vanillyl ketone, vanillyl acid ethyl ester, ethyl vanillin propylene glycol acetal, vanillyl acid methyl ester, vanillic acid, vanillin isobutyrate, vanillic acid butyl ester, vanillin 2, 3-butylene glycol acetal, and vanillin lactate.

11. The odor converting agent according to item 9 or 10, wherein the content of the vanillin-based compound is 10 to 20% by mass with respect to 100% by mass of the odor converting agent.

12. The odor converting agent according to any one of claims 1 to 11, further comprising a pyridine compound.

13. The odor converting agent according to item 12, wherein the pyridine is at least one selected from the group consisting of 2-acetylpyridine, 3-acetylpyridine, 4-acetylpyridine, 2-acetyl-1, 4,5, 6-tetrahydropyridine, 2-acetyl-4-isopropenylpyridine, 4-acetyl-2-isopropenylpyridine, 2-acetyl-4-isopropylpyridine, 3, 5-dimethyl-4, 5,6, 7-tetrahydrothieno [3,2-c ] pyridine, and 2-acetyl-3, 4,5, 6-tetrahydropyridine.

14. The odor converting agent according to any one of claims 1 to 13, further comprising a pyrazine.

15. The odor converting agent according to item 14, wherein the pyrazine is selected from the group consisting of 2-methylthio-3-methylpyrazine, 2-methoxy-3-methylpyrazine, 2-ethyl-3 (5/6) dimethylpyrazine, 2-ethyl-3-methylpyrazine, 2-methoxy-5-methylpyrazine, 2-acetyl-3, (5/6) -dimethylpyrazine, 2-acetyl-3-ethylpyrazine, 2-acetyl-3-methylpyrazine, acetylpyrazine, 2- (furfurylthio) - (3/5/6) -methylpyrazine, 2-methyl- (5/6) - (methylthio) pyrazine, 2-ethyl-3- (methylthio) pyrazine 2-isopropyl-3 - (methylthio) pyrazine, 2-sec-butyl-3-methoxypyrazine, 2-ethoxy- (3/5/6) -methylpyrazine, 2-ethoxy-3-ethylpyrazine, 2-ethoxy-3-isopropylpyrazine, 2-ethyl-3-methoxypyrazine, 2-hexyl-3-methoxypyrazine, 2-isobutyl-3-methoxypyrazine, 2-isopropoxy-3-methylpyrazine, 2-isopropyl- (3/5/6) -methoxypyrazine, 2-methoxy- (5/6) -methylpyrazine, 2-methoxy-3, 5-dimethylpyrazine, 2-isopropyl-3-methoxypyrazine, 2-ethoxy-3-methylpyrazine, 2-ethoxy-3-ethylpyrazine, 2-isopropyl-3-methoxyp, At least one of methoxypyrazine, 2-methyl-6-propoxypyrazine, 2-ethoxy- (5/6) -methylpyrazine, 2-ethoxy-3-ethylpyrazine, 2-ethoxy-3-isopropylpyrazine, 2-hexyl-3-methoxypyrazine, and 2- (hydroxymethyl) -5-methylpyrazine.

16. A method for converting odor, characterized in that an odor converting agent containing at least one oxygen-containing cyclic compound selected from furan compounds, pyran compounds and cyclopentanone derivatives is used for a causative substance of the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint, and/or is used at a place where such an odor is formed.

ADVANTAGEOUS EFFECTS OF INVENTION

The odor converting agent for converting the odor of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage or paint of the present invention can convert the odor into various odors, convert the odors into unpleasant odors, and reduce unpleasant feelings caused by the malodors. In addition, according to the odor conversion method of the present invention, the odor can be converted into other odors by applying the above-mentioned odor conversion agent to substances causing odors of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage or paint and/or to the place where these odors are formed, and unpleasant feelings caused by these malodors can be easily reduced.

Detailed Description

The odor converting agent and the odor converting method of the present invention will be described in detail below.

1. Odor for conversion of odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animal, vegetable, garbage or paint Converting agent

The odor converting agent for converting the odor of asphalt, sludge, sewage, ginkgo, compost, marine animal, vegetable, garbage or paint (also referred to as simply "odor converting agent" in some cases in this specification) of the present invention contains at least one oxygen-containing cyclic compound selected from furan compounds, pyran compounds and cyclopentanone derivatives. The odor converting agent of the invention is used for converting the odor of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage or coating.

Examples of the asphalt include petroleum asphalt produced by distilling crude oil, and naturally occurring natural asphalt. Examples of the odor of asphalt include an odor derived from asphalt components that temporarily float in the air when the asphalt is used for paving a floor or after paving.

The sludge may be a sediment precipitated in a sewage treatment plant or a purification tank.

Examples of the waste water include water stored in a sewage treatment plant or a lower part of a purification tank, and sewage.

Ginkgo is a seed of ginkgo tree, and ginkgo which is a vegetation of street trees and the like falls down on streets and generates odor.

Examples of the compost include manure compost and plant compost.

Examples of the marine animals include marine animals generally kept in aquariums, zoos, and the like, and examples thereof include penguins, whales, tiger whales, dolphins, otters, seals, and dolphins. As the odor of marine animals, odor smelling in a water tank, a water pool, a breeding room, and a display area where these marine animals are bred can be cited. Of these, the odor converting agent of the present invention is particularly suitable for converting penguin's odor.

Examples of the vegetables include plants of the Amaryllidaceae family having a strong odor, and examples of such plants include onion, shallot, garlic, and the like, which are plants of the genus Allium. Among these, the odor converting agent of the present invention is particularly suitable for converting the odor of onions.

Examples of the garbage include garbage that is present as garbage in a household or a commercial facility and is transported to a garbage disposal facility. The odor converting agent of the present invention is particularly suitable for converting odor of a refuse pit (refuse receptacle) which is temporarily stored in a refuse disposal facility until refuse is incinerated.

Examples of the coating material include water-based coating materials and solvent-based coating materials which are generally used. Examples of the water-based coating include a water-soluble acrylic/melamine resin coating, a water-soluble alkyd/melamine resin coating, an acrylic emulsion coating, and a polyurethane emulsion coating. Examples of the solvent-based coating include an acrylic melamine resin coating, an alkyd melamine resin coating, a polyurethane resin coating, and an epoxy resin coating.

(Furan Compound)

The furan compound is an oxygen-containing cyclic compound, and is not particularly limited as long as it has a furan skeleton having a 5-membered ring formed of 4 carbon atoms and 1 oxygen atom. Examples of the furan compound include furanone (furaneol), furfural, 5-methylfurfural, furfuryl thiol, furfuryl alcohol, 2-propionyl furan, 2-ethyl furan, menthyl furan, 2-methyl-3-furanthiol, 2-methyl-3-tetrahydrofuranethiol, 2-methyl-4, 5-dihydro-3-furanthiol, 2-methyl furan, 2-methyl tetrahydrofuran, 2-hexanoyl furan, 2-pentyl furan, 2-propyl furan, 2- (3-phenylpropyl) tetrahydrofuran, 2, 3-dihydrobenzofuran, 2, 4-dimethyl-4-phenyl tetrahydrofuran, 2-furfuryl-5-methyl furan, 2-heptyl furan, 2-ethyl-3-methyl furan, 2-methyl-4-phenyl tetrahydrofuran, 2-ethyl-2-methyl-furan, 2-ethyl-2-methyl-3, 2-methylbenzofuran, 2-methyl-5-propionylfuran, 2- (5-vinyl-5-methyltetrahydrofuran-2-yl) -propionaldehyde, 3- { [ 2-methyl- (2 or 4), 5-dihydro-3-furanyl ] thio } -2-methyltetrahydrofuran-3-thiol, 2-vinyl-5-isopropenyl-2-methyltetrahydrofuran, 5-methyl-2-furanmethanethiol, 6-methyl-2, 3-dihydrothieno [2,3-c ] furan, 2, 5-dimethoxytetrahydrofuran, 3-acetyl-2, 5-dimethylfuran, 2-acetyl-5-methylfuran, 2-methyl-2, 3-dimethylfuran, 2-acetyl-5-methylfuran, 2-methyl-2, 3-methylfuran, 2-methyl-2, 5-methylfuran, 2, 2-acetylfuran, 2-butylfuran, 2, 5-diethyltetrahydrofuran, difurfuryl disulfide, difurfuryl ether, difurfuryl sulfide, 2, 5-dimethyl-3-furanthiol and the like. Among these compounds, furanone, 5-methylfurfural and furfuryl mercaptan are preferable.

The content of the furan compound is preferably 0.5 to 10% by mass, more preferably 0.8 to 5% by mass, even more preferably 0.8 to 3% by mass, particularly preferably 0.8 to 1.5% by mass, and most preferably 0.9 to 1.2% by mass, based on 100% by mass of the odor conversion agent. By setting the content of the furan compound in the above range, the odor converting agent easily converts the malodors of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage, and paints into different odors, and can sufficiently reduce unpleasant feelings caused by these odors.

The furan compound may be used alone or in combination of two or more.

(pyran compound)

The pyran compound is an oxygen-containing cyclic compound, and is not particularly limited as long as it has a pyran skeleton having as a skeleton a 6-membered ring ether compound formed of 5 carbon atoms and 1 oxygen atom. Examples of the pyran compound include maltol, ethylmaltol, 4-acetoxy-3-pentyltetrahydropyran, 3, 5-dihydroxy-6-methyl-2, 3-dihydro-4 (4H) -pyrone, 6-vinyl-2, 2, 6-trimethyltetrahydropyran, 5-methyl-3-butyltetrahydropyran-4-ylacetate, octahydro-2H-1-benzopyran-2-one, 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran, theaspirane, grapospirane, (2S,4aR,8aS) -2,5,5,8 a-tetramethyl-3, 4,4a,5,6,8 a-hexahydro-2H-1-benzopyran, 6-vinyl-2, 2, 6-trimethyltetrahydro-3 (4H) -pyrone, 6-hydroxydihydrotheaspirane, 6-acetoxydihydrotheaspirane, and 2, 6-diethyl-5-isopropyl-2-methyltetrahydro-2H-pyran. Among these compounds, ethyl maltol is preferable.

The content of the pyran compound is preferably 5 to 20% by mass, more preferably 5 to 15% by mass, even more preferably 8 to 15% by mass, and particularly preferably 8 to 12% by mass, based on 100% by mass of the odor converting agent. By setting the content of the pyran compound to the above range, the odor converting agent easily converts the malodors of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage, and paint into different odors, and can sufficiently reduce unpleasant feelings caused by these odors.

The pyran compounds may be used singly or in combination of two or more.

(cyclopentanone derivative)

The cyclopentanone derivative is not particularly limited as long as it is an oxygen-containing cyclic compound having a cyclopentane skeleton of a 5-membered ring formed of 5 carbon atoms and an oxygen atom. Examples of the cyclopentanone derivative include cyclopentanone, methylcyclopentenol ketone acetate, methylcyclopentenol ketone propionate, methylcyclopentenol ketone butyrate, methylcyclopentenol ketone isobutyrate, 2-geranylcyclopentanone, 2-hexylcyclopentanone, 2-hexylenylcyclopentanone, 2-cyclopentylcyclopentanone, 2-pentyl-2-cyclopentenone, 3-methyl-2-pentyl-2-cyclopentenone, 3-ethyl-2-hydroxy-2-cyclopentenone, 2-hydroxy-3, 4-dimethyl-2-cyclopentenone, 2-methyl-3- (2-pentenyl) -2-cyclopentenone, 3-methyl-2- (cis-2-pentenyl) -2-cyclopentenone 3-methyl-2- (trans-2-pentenyl) -2-cyclopentenone, 3-methyl-2-cyclopentenone, 3-ethyl-2-hydroxy-4-methyl-2-cyclopentenone, 2-hexyl-2-cyclopentenone, 2, 3-dimethyl-2-cyclopentenone, and the like. Of these compounds, methylcyclopentenolone is preferred.

The content of the cyclopentanone derivative is preferably 0.1 to 5% by mass, and more preferably 0.5 to 3% by mass, based on 100% by mass of the odor conversion agent. By setting the content of the pyran compound to the above range, the odor converting agent easily converts the malodors of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage, and paint into different odors, and can sufficiently reduce unpleasant feelings caused by these odors.

The cyclopentanone derivatives may be used alone or in combination of two or more.

The odor converting agent of the present invention contains at least one oxygen-containing cyclic compound selected from furan compounds, pyran compounds and cyclopentanone derivatives, and preferably contains at least one oxygen-containing cyclic compound selected from furan compounds and pyran compounds.

The content of the oxygen-containing cyclic compound in the odor converting agent, that is, the total content of the furan compound, the pyran compound and the cyclopentanone derivative is preferably 0.1 to 25% by mass, more preferably 0.1 to 20% by mass, even more preferably 1 to 15% by mass, and particularly preferably 10 to 15% by mass, based on 100% by mass of the odor converting agent. By setting the content of the oxygen-containing cyclic compound in the above range, the odor converting agent easily converts the malodors of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage, and paints into different odors, and can sufficiently reduce unpleasant feelings caused by these odors.

The ratio of the content of the furan compound to the content of the pyran compound in the odor converting agent is, in terms of mass ratio, preferably a furan compound: the pyran compound is 1: 2-1: 5, and preferably 1: 3-1: 4. By setting the ratio of the furan compound to the pyran compound to the above range, the odor converting agent easily converts the malodors of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage, and paint into different odors, and can sufficiently reduce unpleasant feelings caused by these odors.

(Vanillyl aldehyde Compound)

The odor converting agent of the present invention preferably further contains vanillin-type compounds. By containing vanillin compounds in the odor converting agent, a more excellent odor converting effect can be exhibited, and unpleasant feelings caused by the malodors of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage and paint can be more effectively reduced.

The vanillin-based compound is not particularly limited as long as it has a vanillin skeleton. Examples of the vanillin-based compound include vanillin, ethyl vanillin, acetaldehyde ethyl vanillin acetal, vanillin acetate, ethyl vanillin isobutyrate, vanillone, vanillyl acid ethyl ester, ethyl vanillin propylene glycol acetal, vanillyl acid methyl ester, vanillic acid, vanillin isobutyrate, vanillyl acid butyl ester, vanillin 2, 3-butanediol acetal, and vanillin lactate. Of these compounds, vanillin and ethyl vanillin are preferred.

The content of the vanillin compound is preferably 5 to 25% by mass, more preferably 5 to 20% by mass, even more preferably 10 to 20% by mass, and particularly preferably 10 to 15% by mass, based on 100% by mass of the odor conversion agent. By setting the content of the vanillin-type compound to the above range, the odor converting agent can easily convert the offensive odor of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage, and paint into a different odor, and can sufficiently reduce unpleasant feelings caused by the offensive odor.

The vanillin compounds can be used singly or in combination.

(pyridines)

The odor converting agent of the present invention preferably further contains pyridine. By containing pyridine in the odor converting agent, a more excellent odor converting effect can be exhibited, and unpleasant feelings caused by the malodors of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage and paint can be more effectively reduced.

The pyridine is a nitrogen-containing heterocyclic aromatic compound, and is not particularly limited as long as it has a pyridine skeleton having a 6-membered ring structure composed of 5 carbon atoms and 1 nitrogen atom as a skeleton. Examples of the pyridine include 2-acetylpyridine, 3-acetylpyridine, 4-acetylpyridine, 2-acetyl-1, 4,5, 6-tetrahydropyridine, 2-acetyl-4-isopropenylpyridine, 4-acetyl-2-isopropenylpyridine, 2-acetyl-4-isopropylpyridine, 3, 5-dimethyl-4, 5,6, 7-tetrahydrothieno [3,2-c ] pyridine, and 2-acetyl-3, 4,5, 6-tetrahydropyridine. Of these compounds, 2-acetylpyridine is preferred.

The content of the pyridine is preferably 0.05 to 0.3 mass%, more preferably 0.1 to 0.2 mass% based on 100 mass% of the odor conversion agent. By setting the pyridine content to the above range, the odor converting agent can easily convert the offensive odor of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage, and paint into a different odor, and can sufficiently reduce the unpleasant feeling caused by the offensive odor.

The pyridine may be used alone or in combination of two or more.

(pyrazines)

The odor converting agent of the present invention preferably further contains pyrazines. By containing pyrazines in the odor converting agent, a more excellent odor converting effect can be exhibited, and unpleasant feelings caused by malodors of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage, and paint can be more effectively reduced.

The pyrazine is a nitrogen-containing heterocyclic aromatic compound, and is not particularly limited as long as it has a pyrazine skeleton having a pyrazine skeleton, which is a compound having a 6-membered ring structure formed of 4 carbon atoms and 2 nitrogen atoms. Examples of the pyrazines include 2-methylthio-3-methylpyrazine, 2-methoxy-3-methylpyrazine, 2-ethyl-3 (5/6) dimethylpyrazine, 2-ethyl-3-methylpyrazine, 2-methoxy-5-methylpyrazine, 2-acetyl-3, (5/6) -dimethylpyrazine, 2-acetyl-3-ethylpyrazine, 2-acetyl-3-methylpyrazine, acetylpyrazine, 2- (furfurylthio) - (3/5/6) -methylpyrazine, 2-methyl- (5/6) - (methylthio) pyrazine, 2-ethyl-3- (methylthio) pyrazine, 2-isopropyl-3- (methylthio) pyrazine, and mixtures thereof, 2-sec-butyl-3-methoxypyrazine, 2-ethoxy- (3/5/6) -methylpyrazine, 2-ethoxy-3-ethylpyrazine, 2-ethoxy-3-isopropylpyrazine, 2-ethyl-3-methoxypyrazine, 2-hexyl-3-methoxypyrazine, 2-isobutyl-3-methoxypyrazine, 2-isopropoxy-3-methylpyrazine, 2-isopropyl- (3/5/6) -methoxypyrazine, 2-methoxy- (5/6) -methylpyrazine, 2-methoxy-3, 5-dimethylpyrazine, 2-isopropyl-3-methoxypyrazine, Methoxypyrazine, 2-methyl-6-propoxypyrazine, 2-ethoxy- (5/6) -methylpyrazine, 2-ethoxy-3-ethylpyrazine, 2-ethoxy-3-isopropylpyrazine, 2-hexyl-3-methoxypyrazine, 2- (hydroxymethyl) -5-methylpyrazine, and the like. Among these compounds, 2-methylsulfanyl-3-methylpyrazine is preferable.

The content of pyrazines is preferably 0.1 to 0.5 mass%, more preferably 0.1 to 0.4 mass%, with the odor conversion agent being 100 mass%. By setting the content of pyrazines within the above range, the odor converting agent can easily convert the malodors of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage, and paints into different odors, and can sufficiently reduce unpleasant feelings caused by these odors.

The above pyrazines may be used singly or in combination of two or more.

(other additives)

The odor converting agent of the present invention may contain other additives as long as the effects of the present invention are not impaired. Examples of the other additives include furan compounds, pyran compounds, vanillin compounds, organic acids other than pyridines and pyrazines, ester compounds, aldehyde compounds, and ketone compounds.

The total content of the other additives in the odor converting agent is preferably 30% by mass or less, more preferably 20% by mass or less, still more preferably 10% by mass or less, and particularly preferably 5% by mass or less, assuming that the odor converting agent is 100% by mass. By setting the total content of the other additives to the above range, the odor converting agent can easily convert the offensive odor of asphalt, sludge, sewage, ginkgo, compost, marine animals, vegetables, garbage, and paint into a different odor, and can sufficiently reduce the unpleasant feeling due to the offensive odor.

(solvent)

In the odor converting agent of the present invention, the above-mentioned respective components are preferably dispersed in a solvent. By dispersing in a solvent, the agent can be easily applied to asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage, and coating materials by coating, addition, or the like, and can be easily sprayed, scattered, or the like in the place where these odors are formed or in the air.

As the solvent, water or a solvent can be used. The solvent is not particularly limited, and examples thereof include alcohols, ethers, ketones, and esters. Among them, alcohols are preferred because they exhibit appropriate volatility when the odor conversion agent is sprayed in the air and are less harmful to humans and marine animals.

The alcohol is not particularly limited, and examples thereof include a monool, a diol, and a polyol such as a triol. As the alcohol, an alcohol having 2 to 4 carbon atoms can be suitably used. The number of carbon atoms of the alcohol is more preferably 2 to 3.

Specific examples of the alcohol include ethanol, propylene glycol, and glycerin, and ethanol and propylene glycol are preferable because the odor converting agent exhibits appropriate volatility when sprayed in the air and is less harmful to humans and marine animals.

The above solvents may be used alone or in combination of two or more.

The content of the solvent is preferably 20 to 90% by mass, more preferably 30 to 90% by mass, even more preferably 40 to 80% by mass, and particularly preferably 50 to 80% by mass, based on 100% by mass of the odor conversion agent. By setting the content of the solvent to the above range, the odor converting agent can be easily sprayed in the air, and appropriate volatility and retention can be exhibited when the odor converting agent is sprayed in the air.

When water and a solvent are used in combination as the solvent, the content ratio of water to the solvent is preferably 2: 98 to 10: 90, more preferably 10: 90 to 20: 80, in terms of mass ratio. By setting the ratio of the water to the solvent content to the above range, the odor converting agent can exhibit appropriate volatility when sprayed in the air, and the harm to humans or marine animals can be further reduced.

2. Odor conversion method

The present invention is also an odor conversion method characterized in that an odor conversion agent containing at least one oxygen-containing cyclic compound selected from furan compounds, pyran compounds and cyclopentanone derivatives is used for substances responsible for the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint, and/or is used at the site where these odors are formed.

The odor converting agent used in the odor converting method of the present invention may be the above-mentioned odor converting agent for converting the odor of asphalt, sludge, sewage, ginkgo biloba, compost, marine animals, vegetables, garbage or paint.

As a method for the causative substance of the above-mentioned odor, a method of dispersing the causative substance of the odor or a method of mixing the causative substance of the odor may be cited. The method of applying the odor converting agent to the odor-causing substance is not particularly limited, and examples thereof include a method of applying the odor converting agent to the odor-causing substance. In addition, as a method of mixing with the causative substance of the odor, for example, in the case where the causative substance of the odor is pitch, a method of adding an odor converting agent to heated molten pitch is exemplified.

The odor converting agent may be used for a substance causing odor, may be used in a place where odor is formed, or may be used for both.

Examples of the method used in the place where the odor is formed include a method of atomizing the odor converting agent and spraying the odor converting agent into the air, and a method of forming the odor converting agent into a droplet and spraying the droplet. As a method of atomizing the odor converting agent into a mist and spraying the mist into the air, for example, a spraying method using a spray, a method of spraying the compost simultaneously with a fertilizer applicator, a method of scattering the mist of the odor converting agent by wind, and the like can be cited. Further, as a method of dispensing the droplet-shaped odor conversion agent, a dispensing method such as a method of discharging and dispensing a liquid odor conversion agent from a nozzle can be cited.

The temperature of the odor converting agent when used is not particularly limited, but is preferably 10 to 25 ℃, and more preferably 15 to 20 ℃. By using the odor converting agent in the above temperature range, the odor converting effect can be further improved.

The pressure at which the odor converting agent is sprayed or spread from a spray or nozzle is preferably 0.2 to 0.6MPa, more preferably 0.3 to 0.5 MPa. By spraying or spreading the odor converting agent at a pressure in the above range, the odor converting agent can be effectively sprayed or spread over a wider range.

The place where the odor converting agent is sprayed or scattered is not particularly limited, and the odor converting agent can be sprayed into the air on roads or construction sites where the odor of asphalt occurs, sewage treatment sites where the odor of sludge occurs, sewage treatment sites where the odor of sewage occurs, sewage treatment sites, sites near sewers, streets where the odor of ginkgo biloba occurs, farms where the odor of compost occurs, aquariums or zoos where the odor of marine animals occurs, food processing sites where the odor of vegetables occurs, refuse pits (refuse dumps) of refuse treatment facilities where the odor of refuse occurs, and coating work sites where the odor of paint occurs. By spraying the odor converting agent into the air in these places, the malodors can be converted into other odors, and unpleasant feelings can be easily reduced.