Claims
- 1. A stabilized amido acid composition comprising an effective stabilizing amount of an antioxidant and an amido acid of formula I or II: wherein R1 is selected from C1-C22 alkyl, C2-C22 alkenyl, C2-C22 alkynyl, C3-C22 cycloalkyl, and C6-C14 aryl;R2 and R5 are each independently selected from hydrogen, C1-C22 alkyl, C2-C22 alkenyl, C2-C22 alkynyl, C3-C22 cycloalkyl, C6-C14 aryl, and where in formula II, R2 and R5 can together with the nitrogen carrying them form a C3-C10 heterocycle; R3 and R4 are each independently selected from hydrogen, C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, C6-C10 aryl and where R3 and R4 can together with the carbon carrying them form a C3-C10 cycloalkyl; and n is an integer from 0 to 20.
- 2. The composition of claim 1,wherein R1 is selected from C5-C15 alkyl, C5-C15 alkenyl, C5-C15 alkynyl, C5-C15 cycloalkyl, and C6-C14 aryl; R2 and R5 are each independently selected from hydrogen, C5-C15 alkyl, C5-C15 alkenyl, C5-C15 alkynyl, C5-C15 cycloalkyl, C6-C14 aryl, and where in formula II, R2 and R5 together with the nitrogen carrying them can form a C3-C10 heterocycle; R3 and R4 are each independently selected from hydrogen, C1-C5 alkyl, C2-C5 alkenyl, C2-C5 alkynyl, C3-C6 cycloalkyl, C6-C10 aryl and where R3 and R4 can together with the carbon carrying them form a C3-C6 cycloalkyl; and n is an integer from 0 to 10.
- 3. The composition of claim 1,wherein R1 is a C5-C15 alkyl; R2 and R5 are each hydrogen or C5-C15 alkyl; R3 and R4 are each hydrogen; and n is an integer from 2 to 10.
- 4. The composition of claim 1, wherein the antioxidant is a phenolic antioxidant or mixture of phenolic antioxidants.
- 5. The composition of claim 1, wherein the antioxidant is selected from 1,3,5-trimethyl-2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, tetrakis(methylene (3,5-di-tert-butyl-4-hydroxyhydrocinnamate)) methane, and butylated hydroxytoluene (BHT).
- 6. The composition of claim 1, wherein the stabilized amido acid composition does not exhibit visible discoloration after heating it for about 72 hours at 100° C.
- 7. The composition of claim 1, wherein the stabilizing effective amount of antioxidant ranges from about 0.001 to about 2% by weight.
- 8. The composition of claim 1, wherein the stabilized amido acid composition is a liquid, a liquid melt, or a solution.
- 9. A process for preparing a stabilized amido acid composition comprising admixing a stabilizing effective amount of an antioxidant and an amido acid of formula I or formula II: wherein R1 is selected from C1-C22 alkyl, C2-C22 alkenyl, C2-C22 alkynyl, C3-C22 cycloalkyl, and C6-C14 aryl;R2 and R5 are each independently selected from hydrogen, C1-C22 alkyl, C2-C22 alkenyl, C2-C22 alkynyl, C3-C22 cycloalkyl, C6-C14 aryl, and where in formula II, R2 and R5 can together with the nitrogen carrying them form a C3-C10 heterocycle; R3 and R4 are each independently selected from hydrogen, C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, C6-C10 aryl and where R3 and R4 together with the carbon carrying them form a C3-C10 cycloalkyl; and n is an integer from 0 to 20.
- 10. The process of claim 9, wherein the amido acid is in a liquid state, a molten state, or in solution when admixed with the antioxidant.
- 11. The process of claim 9, wherein the antioxidant is selected from 1,3,5-trimethyl-2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, tetrakis(methylene (3,5-di-tert-butyl-4-hydroxyhydrocinnamate)) methane, and butylated hydroxytoluene (BHT).
- 12. The process of claim 9, wherein the effective stabilizing amount of the antioxidant ranges from about 0.001 to about 2% by weight.
Parent Case Info
This application claims priority under 35 U.S.C. §119 to provisional application Ser. No. 60/208,502, filed Jun. 2, 2000, which is incorporated herein by reference.
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Provisional Applications (1)
|
Number |
Date |
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60/208502 |
Jun 2000 |
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