Odour-masked amine composition

1. A composition, comprising:

(a) at least 90% by weight of at least one primary, secondary or tertiary amine represented by formula (I), relative to the total weight of the composition,

wherein

R 1 , R 2 and R 3 , which may be identical or different, are selected independently of one another from a hydrogen atom, a linear or branched alkyl radical comprising from 1 to 12 carbon atoms, or a cycloalkyl radical comprising from 3 to 12 carbon atoms, or

two of the substituents selected from R 1 , R 2 and R 3 , together and with the nitrogen atom to which they are bonded, form a ring structure comprising from 2 to 12 carbon atoms, and optionally comprising one or more heteroatoms selected from oxygen, nitrogen, sulfur or phosphorus, and being optionally substituted with one or more functional groups selected from hydroxyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, benzyl, fluorine, chlorine, bromine, iodine, sulfur, phosphorus or nitrogen, and

at least one of is R 1 , R 2 and R 3 is not hydrogen; and

(b) an odor-masking agent,

wherein

the composition comprises at most 10% by weight of the odor-masking agent, relative to the total weight of the composition; and

the odor-masking agent comprises at least one ether represented by formula (b1):

R 4 —O—R 5   (b1)

wherein

R 4 and R 5 , which may be identical or different, are selected independently of one another from a linear or branched alkyl radical comprising from 1 to 12 carbon atoms, a cycloalkyl radical comprising from 3 to 12 carbon atoms, an alkenyl radical comprising from 2 to 12 carbon atoms, a cycloalkenyl radical comprising from 3 to 12 carbon atoms, a phenyl radical or a benzyl radical, or

R 4 and R 5 , together and with the oxygen atom to which they are bonded, form a ring structure comprising from 3 to 20 atoms, optionally comprising one or more heteroatoms selected from oxygen, nitrogen, sulfur and phosphorus, wherein the ring structure is optionally substituted with one or more groups selected from hydroxyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, phenyl, benzyl, fluorine, chlorine, bromine, iodine, sulfur, phosphorus or nitrogen.

2. The composition of claim 1 , wherein the odor-masking agent further comprises:

(b2) at least one terpene and/or one terpenoid.

3. The composition of claim 1 , wherein the odor-masking agent further comprises:

at least one oxime represented by formula (b3):

wherein

R 6 is selected from a linear or branched alkyl radical comprising from 1 to 24 carbon atoms, a cycloalkyl radical comprising from 3 to 24 carbon atoms, an alkenyl radical comprising from 2 to 24 carbon atoms, a cycloalkenyl radical comprising from 3 to 24 carbon atoms, a phenyl radical or a benzyl radical, and R 7 is selected from a hydrogen atom, a linear or branched alkyl radical comprising from 1 to 24 carbon atoms, a cycloalkyl radical comprising from 3 to 24 carbon atoms, an alkenyl radical comprising from 2 to 24 carbon atoms, a cycloalkenyl radical comprising from 3 to 24 carbon atoms, a phenyl radical or a benzyl radical, or

R 6 and R 7 , together and with the carbon atom to which they are bonded, form a ring structure comprising from 3 to 20 atoms, and optionally comprising one or more heteroatoms selected from oxygen, nitrogen, sulfur or phosphorus, wherein the ring structure is optionally substituted with one or more groups selected from hydroxyl, alkoxy, phenyl, benzyl, fluorine, chlorine, bromine, iodine, sulfur, phosphorus or nitrogen.

4. The composition of claim 1 , wherein the amine is a primary amine.

5. The composition of claim 1 , wherein the amine is selected from the group consisting of propan-1-amine, propan-2-amine, cyclopentanamine, 2-methylpropan-2-amine, phenylmethanamine, 2-aminopentane, 3-aminopentane, 1,2-dimethylpropylamine, hexylamine, 1,3-dimethylbutylamine, n-heptylamine, n-octylamine, 2-aminooctane, 3,3,5-trimethylcyclohexylamine, ethylamine (MEA), isopropylamine, sec-butylamine, 3-ethoxypropylamine, 3-(2-methoxyethoxy)propylamine, 3-butoxypropylamine, 3-(2-ethylhexyloxy)propylamine, 3-isopropoxypropylamine, 3-methoxypropylamine, and mixtures thereof.

6. The composition of claim 1 , wherein the amine is selected from the group consisting of N-methylethanamine, N-ethylethanamine, N-methylpentan-3-amine, N-3-dimethylbutan-2-amine, di(sec-butyl)amine, diamylamine, isopropylbenzylamine, dihexylamine, diethylamine, diisopropylamine, N-isopropylmethylamine, N-butylmethylamine, N-(sec-butyl)methylamine, N-isobutylmethylamine, N-(tert-butyl)methylamine, N-methylpentylamine, N-hexylmethylamine, N-methylcyclohexylamine, N-heptylmethylamine, N-octylmethylamine, N-ethylmethylamine, N-ethylpropylamine, N-ethylisopropylamine, N-butylethylamine, N-(sec-butyl)ethylamine, N-ethylcyclohexylamine, N-ethylbenzylamine, and mixtures thereof.

7. The composition of claim 1 , wherein the amine is selected from the group consisting of trimethylamine, N-methylaziridine, dimethylethylamine (DMEA), N-methylazetidine, N-ethylaziridine, diethylmethylamine (DEMA), dimethylisopropylamine (DMIPA), dimethyl(n-propyl)amine (DMPA), N-(n-propyl)aziridine, N-isopropylaziridine, N-ethylazetidine, N-methylpyrrolidine, N,N,N′,N-tetramethyldiaminomethane, triethylamine (TEA), methylethyl(n-propyl)amine, methylethylisopropylamine, dimethyl(n-butyl)amine, dimethyl(sec-butyl)amine, dimethylisobutylamine, dimethyl(tert-butyl)amine, N-ethylpyrrolidine, N-methylpiperidine, hexamethylenetetramine, dimethylpiperazine, N,N,N′,N′-tetramethyldiaminoethane, dimethylpentylamines, methylethylbutylamines, diethylamines, dipropylmethylamines, N-propylpyrrolidines, N-ethylpiperidine, dimethylhexylamines, methylethylpentylamines, diethylbutylamines, dipropylethylamines, N-butylpyrrolidines, N-propylpiperidines, diethylpiperazine, dimethylheptylamines, methylethylhexylamines, diethylpentylamines, tripropylamines, N-pentylpyrrolidines, N-butylpiperidines, dimethyloctylamines, methylethylheptylamines, diethylhexylamines, ethylpropylpentylamines, dipropylbutylamines, N-pentylpiperidines, ethyldiisopropylamine, and mixtures thereof.

8. The composition of claim 1 , wherein the amine is selected from the group consisting of DMEA, DMIPA, DEMA, DMPA, TEA, and mixtures thereof.

9. The composition of claim 1 , wherein the amine comprises DMEA.

10. The composition of claim 1 , wherein the ether represented formula (b1) is selected from the group consisting of phenoxybenzene, diphenyl ether, methoxynaphthalenes, 1-methoxy-4-methyl-(4-methylanisole), 2-(2,4-dimethylcyclohex-3-en-1-yl)-5-methyl-(1-methylpropyl)-1,3-dioxane, methoxymethane, methoxyethane, ethoxyethane, 2-ethoxypropane, oxacyclopropane, oxacyclopentane, oxacyclohexane, 1,4-dioxacyclohexane, dimethoxymethane, diisopropyl ether, tetrahydrofuran, 1,4-dioxane, pyrans, dihydropyrans, phenylpyrans, dihydrophenylpyrans, pyrans and dihydropyrans substituted by at least one of a phenyl or an alkyl group, and mixtures thereof.

11. The composition of claim 1 , wherein the odor-masking agent further comprises:

(b2) at least one terpene/terpenoid selected from the group consisting of terpinenes, myrcene, limonene, terpinolene, pinenes, sabinene, camphene, ocimene, eucalyptol, citral, menthol, camphor, menthone, terpineol, isoborneol, nerol, citronellal, citronellol, linalool, geraniol, myrcenol, essential oils based on terpenes and/or terpenoids, and mixtures thereof.

12. The composition of claim 1 , wherein the odor-masking agent further comprises

(b3) at least one oxime selected from the group consisting of cinnamaldehyde oxime, 2-methylbutanal oxime, 3-methylbutanal oxime, methyl ethyl ketoxime, 3-heptanone oxime, 5-methyl-3-heptanone oxime, glyoxime, dimethylglyoxime, diaminoglyoxime, pralidoxime, obidoxime, perillartine, asoxime chloride, salicylaldoxime, and mixtures thereof.

13. The composition of claim 1 , wherein the odor-masking agent further comprises:

(b2) at least one terpene/terpenoid, and

(b3) at least one oxime.

14. The composition of claim 1 , wherein the amine is a secondary amine.

15. The composition of claim 1 , wherein the amine is a tertiary amine.

16. The composition of claim 1 , comprising at least 95% by weight of (a) and at most 5% by weight of (b), relative to the total weight of the composition.

17. The composition of claim 1 , comprising at least 99% by weight of (a) and at most 1% by weight of (b), relative to the total weight of the composition.

18. The composition of claim 1 , comprising at least 99.5% by weight of (a) and at most 0.5% by weight of (b), relative to the total weight of the composition.

19. A method of preparing the composition of claim 1 , comprising combining (a) and (b).

20. A method of manufacturing a polymer, comprising manufacturing a polymer in the presence of the composition of claim 1 .

21. A method of manufacturing a foundry mold, comprising manufacturing a foundry mold in the presence of the composition of claim 1 .

22. A foundry mold obtained by crosslinking a binder mixed with an aggregate in the presence of the composition of claim 1 .

23. A method of masking the odor of a secondary or tertiary amine, comprising combining at least one secondary or tertiary amine with an effective amount of an odor-masking agent comprising:

at least one ether represented by formula (b1):

R 4 —O—R 5   (b1)

wherein

R 4 and R 5 , which may be identical or different, are selected independently of one another from a linear or branched alkyl radical comprising from 1 to 12 carbon atoms, a cycloalkyl radical comprising from 3 to 12 carbon atoms, an alkenyl radical comprising from 2 to 12 carbon atoms, a cycloalkenyl radical comprising from 3 to 12 carbon atoms, a phenyl radical or a benzyl radical, or

R 4 and R 5 , together and with the oxygen atom to which they are bonded, form a ring structure comprising from 3 to 20 atoms, optionally comprising one or more heteroatoms selected from oxygen, nitrogen, sulfur and phosphorus, wherein the ring structure is optionally substituted with one or more groups selected from hydroxyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, phenyl, benzyl, fluorine, chlorine, bromine, iodine, sulfur, phosphorus or nitrogen, and

at least one oxime represented by formula (b3):

wherein

R 6 is selected from a linear or branched alkyl radical comprising from 1 to 24 carbon atoms, a cycloalkyl radical comprising from 3 to 24 carbon atoms, an alkenyl radical comprising from 2 to 24 carbon atoms, a cycloalkenyl radical comprising from 3 to 24 carbon atoms, a phenyl radical or a benzyl radical, and R 7 is selected from a hydrogen atom, a linear or branched alkyl radical comprising from 1 to 24 carbon atoms, a cycloalkyl radical comprising from 3 to 24 carbon atoms, an alkenyl radical comprising from 2 to 24 carbon atoms, a cycloalkenyl radical comprising from 3 to 24 carbon atoms, a phenyl radical or a benzyl radical, or

R 6 and R 7 , together and with the carbon atom to which they are bonded, form a ring structure comprising from 3 to 20 atoms, and optionally comprising one or more heteroatoms selected from oxygen, nitrogen, sulfur or phosphorus, wherein the ring structure is optionally substituted with one or more groups selected from hydroxyl, alkoxy, phenyl, benzyl, fluorine, chlorine, bromine, iodine, sulfur, phosphorus or nitrogen.