Claims
- 1. A composition comprising at least 90% pure ethyleneimine dimer.
- 2. The composition of claim 1, wherein said composition is at least 95% pure ethyleneimine dimer.
- 3. The composition of claim 2, wherein said composition is at least 98% pure ethyleneimine dimer.
- 4. The composition of claim 1, wherein said ethyleneimine dimer is produced by a method comprising the steps of:
(a) reacting 2-(2-aminoethylamino)ethanol with an aqueous HX solution, where X is a halogen, to produce N-(2-haloethyl)-1,2-ethanediamine dihydrohalide; (b) reacting said N-(2-haloethyl)-1,2-ethanediamine dihydrohalide with a base in a solvent to convert said N-(2-haloethyl)-1,2-ethanediamine dihydrohalide into ethyleneimine dimer; and (c) purifying said ethyleneimine dimer from said solvent.
- 5. The composition of claim 4, wherein the yield of said N-(2-haloethyl)-1,2-ethanediamine dihydrohalide from said 2-(2-aminoethylamino)ethanol is at least 50% of the theoretical yield.
- 6. The composition of claim 5, wherein the yield of said N-(2-haloethyl)-1,2-ethanediamine dihydrohalide from said 2-(2-aminoethylamino)ethanol is at least 75% of the theoretical yield.
- 7. A method of synthesizing ethyleneimine dimer, said method comprising the steps of:
(a) converting 2-(2-aminoethylamino)ethanol into N-(2-haloethyl)-1,2-ethanediamine dihydrohalide; (b) converting said N-(2-haloethyl)-1,2-ethanediamine dihydrohalide into ethyleneimine dimer; and (c) purifying said ethyleneimine dimer from said solvent.
- 8. The method of claim 7, wherein the yield of said N-(2-haloethyl)-1,2-ethanediamine dihydrohalide from said 2-(2-aminoethylamino)ethanol is at least 50% of the theoretical yield.
- 9. The method of claim 8, wherein the yield of said N-(2-haloethyl)-1,2-ethanediamine dihydrohalide from said 2-(2-aminoethylamino)ethanol is at least 75% of the theoretical yield.
- 10. The method of claim 7, wherein said ethyleneimine dimer is at least 90% pure after said purifying step (c).
- 11. The method of claim 10, wherein said ethyleneimine dimer is at least 95% pure after said purifying step (c).
- 12. The method of claim 11, wherein said ethyleneimine dimer is at least 98% pure after said purifying step (c).
- 13. The method of claim 7, wherein said method results in a yield of ethyleneimine dimer that is at least 20% of the theoretical yield.
- 14. The method of claim 13, wherein said method results in a yield of ethyleneimine dimer that is at least 25% of the theoretical yield.
- 15. The method of claim 14, wherein said method results in a yield of ethyleneimine dimer that is at least 30% of the theoretical yield.
Parent Case Info
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This application is a continuation of and claims priority from U.S. application Ser. No. 09/493,544, filed Jan. 28, 2000 (now allowed), which claims benefit from U.S. Provisional Application No. 60/117,789, filed Jan. 29, 1999(now abandoned).
Provisional Applications (1)
|
Number |
Date |
Country |
|
60117789 |
Jan 1999 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09493544 |
Jan 2000 |
US |
Child |
09817817 |
Mar 2001 |
US |