| 发明名称 |
PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID BY HYDROGENATION |
| 摘要 |
A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130° C. to 225° C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi. A product FDCA composition is produced having a low amount of tetrahydrofuran dicarboxylic acid, a low b*, and a low amount of 5-formyl furan-2-carboxylic acid (FFCA). |
| 申请公布号 |
US2014364633(A1) |
申请公布日期 |
2014.12.11 |
| 申请号 |
US201414309010 |
申请日期 |
2014.06.19 |
| 申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
Janka Mesfin Ejerssa;Sumner, JR. Charles Edwan;Kirk Shane Kipley;Shaikh Ashfaq Shahanawaz;Parker Kenny Randolph |
| 分类号 |
C07D307/68 |
主分类号 |
C07D307/68 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A furan 2,5-dicarboxylic acid composition comprising:
a) solids, wherein at least 98 wt. % of the solids are FDCA, based on the weight of the solids; b) a b* of less than 4, c) FFCA in an amount of less than 500 ppm; and d) tetrahydrofuran dicarboxylic acid (“THFDCA”) present in an amount ranging from 0 to no more than 0.5 wt. %;in each case based on the weight of the solids. |
| 地址 |
Kingsport TN US |
