Invention Grant
US08912349B2 Method for producing purified dialkyl-furan-2,5-dicarboxylate separation and solid liquid separation
有权
纯化的二烷基 - 呋喃-2,5-二羧酸二酯分离和固液分离方法
- Patent Title: Method for producing purified dialkyl-furan-2,5-dicarboxylate separation and solid liquid separation
- Patent Title (中): 纯化的二烷基 - 呋喃-2,5-二羧酸二酯分离和固液分离方法
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Application No.: US13530765Application Date: 2012-06-22
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Publication No.: US08912349B2Publication Date: 2014-12-16
- Inventor: Ashfaq Shaikh , Kenny Randolph Parker , Lee Reynolds Partin , Mesfin Ejerssa Janka
- Applicant: Ashfaq Shaikh , Kenny Randolph Parker , Lee Reynolds Partin , Mesfin Ejerssa Janka
- Applicant Address: US TN Kingsport
- Assignee: Eastman Chemical Company
- Current Assignee: Eastman Chemical Company
- Current Assignee Address: US TN Kingsport
- Agency: Hovey Williams LLP
- Main IPC: C07D307/46
- IPC: C07D307/46
Abstract:
A process to produce a purified dimethyl-furan-2,5-dicarboxylate (DMFD) by feeding furan dicarboxylic acid and methanol to an esterification zone to generate a crude diester composition, and purifying the crude diester composition with a physical separation process followed by crystallization, solid liquid separation, and optionally drying to produce a purified DMFD composition. A portion of the stream generated by solid liquid separation can be dissolved and subjected to crystallization and solid liquid separation repeatedly. The process is useful to produce a purified DMFD composition having a low b*, at least 98 wt. % DAFD solids, and a low concentration of 5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) and methyl 5-formylfuran-2-carboxylate (MFFC).
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