Claims
- 1. A solvent composition comprising a C1-C4 lactate ester and an odor-reducing amount of a tertiary amine having a boiling point at one atmosphere of about 80° C. to about 160° C., said composition (a) being substantially free of odor due to said tertiary amine as compared to the same composition without the tertiary amine, (b) exhibiting a reduced amount of odor due to said lactate ester, and (c) being a homogeneous liquid at zero degrees C.
- 2. The solvent composition according to claim 1 wherein said lactate ester comprises up to about 99 weight percent of said composition.
- 3. The solvent composition according to claim 1 wherein said lactate ester comprises about 20 to about 75 weight percent of said composition.
- 4. The solvent composition according to claim 3 further comprising about 10 to about 60 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 5. The solvent composition according to claim 1 wherein said lactate ester comprises about 30 to about 60 weight percent of said composition.
- 6. The solvent composition according to claim 5 further comprising about 30 to about 60 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 7. The solvent composition according to claim 1 wherein said lactate ester comprises about 40 to about 70 weight percent of said composition.
- 8. The solvent composition according to claim 7 further comprising about 1 to about 30 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 9. The solvent composition according to claim 1 wherein said tertiary amine has a boiling point of about 130° C. to about 160° C.
- 10. The solvent composition according to claim 1 wherein said tertiary amine is present in an amount of about 1 to about 25 percent of the ester present.
- 11. The solvent composition according to claim 1 wherein said lactate ester is ethyl lactate.
- 12. The solvent composition according to claim 1 wherein said tertiary amine is selected from the group consisting of N,N-dimethylethanolamine, N,N-diethylethanolamine, 1-dimethylamino-2-propanol, 3-dimethylamino-1-propanol, N-methyl morpholine, N-ethyl morpholine, triethylamine, tripropylamine, triiso-propylamine, 1-dimethylamino-2-propyne, triallylamine, 1-methylpyrrolidine, 1-ethylpyrrolidine, pyridine, 2-picoline, 3-picoline, 4-picoline, 2,3-lutidine, 2,4-lutidine, 2,5-lutidine, 2,6-lutidine, 3,4-lutidine and 3,5-lutidine.
- 13. A solvent composition comprising ethyl lactate and about 1 to about 25 percent w/w of a tertiary amine having a boiling point at one atmosphere of about 130° C. to about 160° C., said composition (a) being substantially free of odor due to said tertiary amine as compared to the same composition without the tertiary amine, (b) exhibiting a reduced amount of odor due to said lactate ester, and (c) being a homogeneous liquid at zero degrees C.
- 14. The solvent composition according to claim 13 wherein ethyl lactate comprises up to about 99 weight percent of said composition.
- 15. The solvent composition according to claim 13 wherein ethyl lactate comprises about 20 to about 75 weight percent of said composition.
- 16. The solvent composition according to claim 15 further comprising about 10 to about 60 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 17. The solvent composition according to claim 13 wherein ethyl lactate comprises about 30 to about 60 weight percent of said composition.
- 18. The solvent composition according to claim 17 further comprising about 30 to about 60 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 19. The solvent composition according to claim 13 wherein said lactate ester comprises about 40 to about 70 weight percent of said composition.
- 20. The solvent composition according to claim 19 further comprising about 1 to about 30 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 21. The solvent composition according to claim 12 wherein said tertiary amine is present in an amount of about 2 to about 10 percent w/w.
- 22. A solvent composition comprising ethyl lactate and about 2 to about 10 percent w/w of a tertiary amine having a boiling point at one atmosphere of about 130° C. to about 160° C., said composition (a) being substantially free of odor due to said tertiary amine as compared to the same composition without the tertiary amine, (b) exhibiting a reduced amount of odor due to said lactate ester, and (c) being a homogeneous liquid at zero degrees C.
- 23. The solvent composition according to claim 22 wherein said tertiary amine is aliphatic.
- 24. The solvent composition according to claim 23 wherein said tertiary amine is N,N-dimethylethanolamine or N,N-diethylethanolamine.
- 25. A method for reducing the odor of a C1-C4 lactate ester-containing solvent composition that comprises homogeneously admixing an odor-reducing amount of a tertiary amine having a boiling point at one atmosphere of about 80° C. to about 160° C. with said C1-C4 lactate ester-containing composition.
- 26. The method according to claim 25 wherein said lactate ester comprises up to about 99 weight percent of said composition.
- 27. The method according to claim 25 wherein said lactate ester comprises about 20 to about 75 weight percent of said composition.
- 28. The method according to claim 27 further comprising about 10 to about 60 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 29. The method according to claim 25 wherein said lactate ester comprises about 30 to about 60 weight percent of said composition.
- 30. The method according to claim 29 further comprising about 30 to about 60 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 31. The method according to claim 25 wherein said lactate ester comprises about 40 to about 70 weight percent of said composition.
- 32. The method according to claim 31 further comprising about 1 to about 30 weight percent of a C1-C4 ester of a C16-C20 fatty acid having a melting point on minus 10° C. or less.
- 33. The method according to claim 25 wherein said tertiary amine has a boiling point of about 130° C. to about 160° C.
- 34. The method according to claim 25 wherein said tertiary amine is present in an amount of about 1 to about 25 percent of the ester present.
- 35. The method according to claim 25 wherein said lactate ester is ethyl lactate.
- 36. The method according to claim 25 wherein said tertiary amine is selected from the group consisting of N,N-dimethylethanolamine, N,N-diethylethanolamine, 1-dimethylamino-2-propanol, 3-dimethylamino-1-propanol, N-methyl morpholine, N-ethyl morpholine, triethylamine, tripropylamine, triiso-propylamine, 1-dimethylamino-2-propyne, triallylamine, 1-methylpyrrolidine, 1-ethylpyrrolidine, pyridine, 2-picoline, 3-picoline, 4-picoline, 2,3-lutidine, 2,4-lutidine, 2,5-lutidine, 2,6-lutidine, 3,4-lutidine and 3,5-lutidine.
- 37. A method for reducing the odor of an ethyl lactate-containing solvent composition that comprises homogeneously admixing about 1 to about 25 percent w/w of a tertiary amine having a boiling point at one atmosphere of about 130° C. to about 160° C. with said ethyl lactate-containing composition.
- 38. The method according to claim 37 wherein said tertiary amine is present in an amount of about 2 to about 10 percent w/w.
- 39. The method according to claim 37 wherein said tertiary amine is N,N-dimethylethanolamine or N,N-diethylethanolamine.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present patent application is a continuation of U.S. Provisional Patent Application Serial No. 60/312,157 filed on Aug. 14, 2001, for which the benefit of the priority filing date is claimed under 35 U.S.C. 119(e).
Provisional Applications (1)
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Number |
Date |
Country |
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60312157 |
Aug 2001 |
US |