Method for producing purified dialkyl-furan-2,5-dicarboxylate by physical separation and solid liquid separation
    12.
    发明授权
    Method for producing purified dialkyl-furan-2,5-dicarboxylate by physical separation and solid liquid separation 有权
    通过物理分离和固液分离生产纯化的二烷基 - 呋喃-2,5-二羧酸二烷基酯的方法

    公开(公告)号:US09169229B2

    公开(公告)日:2015-10-27

    申请号:US14536387

    申请日:2014-11-07

    CPC classification number: C07D307/68 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).

    Abstract translation: 通过将呋喃二甲酸和甲醇加入到酯化区以产生粗制二酯组合物,并通过物理分离方法纯化粗二酯组合物,然后结晶,从而生产纯化的二甲基 - 呋喃-2,5-二羧酸二甲酯(DMFD) ,固液分离,任选地干燥以制备纯化的DMFD组合物。 通过固液分离产生的一部分流可以溶解并重复进行结晶和固液分离。 该方法可用于生产具有低b *,至少98重量%的纯化的DMFD组合物。 %DAFD固体,低浓度的5-(甲氧羰基)呋喃-2-羧酸(MCFC)和5-甲酰呋喃-2-羧酸甲酯(MFFC)。

Patent Agency Ranking