中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

95 records (took 0.051 seconds)

    Method for producing purified dialkyl-furan-2,5-dicarboxylate by physical separation and solid liquid separation
    48.
    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

    Applicant: Eastman Chemical Company

    Inventor： Kenny Randolph Parker ,  Ashfaq Shaikh ,  Lee Reynolds Parton ,  Mesfin Ejerssa Janka

    IPC: C07D307/68 ,  C07D307/46

    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）。

    PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID BY HYDROGENATION
    49.
    发明申请
    PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID BY HYDROGENATION 审中-公开
    通过氢化法纯化原料呋喃2,5-二羧酸

    公开(公告)号：US20140364633A1

    公开(公告)日：2014-12-11

    申请号：US14309010

    申请日：2014-06-19

    Applicant: EASTMAN CHEMICAL COMPANY

    Inventor： Mesfin Ejerssa Janka ,  Charles Edwan Sumner, JR. ,  Shane Kipley Kirk ,  Ashfaq Shahanawaz Shaikh ,  Kenny Randolph Parker

    IPC: C07D307/68

    CPC classification number: C07D307/68

    Abstract: 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).

    Abstract translation: 通过氢化溶解在氢化溶剂如水中的FDCA组合物，并在温和条件下（例如在130℃的温度范围内）氢化来纯化粗呋喃2,5-二羧酸组合物（cFDCA）的方法 通过在10psi至900psi的氢分压下，在氢化催化剂存在下使溶剂化的FDCA组合物与氢气接触。 制备具有少量四氢呋喃二羧酸，低b *和少量5-甲酰基呋喃-2-羧酸（FFCA）的产品FDCA组合物。

    OXIDATION PROCESS TO PRODUCE A CRUDE DRY CARBOXYLIC ACID PRODUCT
    50.
    发明申请
    OXIDATION PROCESS TO PRODUCE A CRUDE DRY CARBOXYLIC ACID PRODUCT 有权
    生产羧酸羧酸产品的氧化方法

    公开(公告)号：US20140256964A1

    公开(公告)日：2014-09-11

    申请号：US14282360

    申请日：2014-05-20

    Applicant: EASTMAN CHEMICAL COMPANY

    Inventor： Mesfin Ejerssa Janka ,  Kenny Randolph Parker ,  Ashfaq Shahanawaz Shaikh ,  Lee Reynolds Partin

    IPC: C07D307/68

    CPC classification number: C07D307/68 ,  C07D307/48

    Abstract: Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH2-furfural where R=alkyl, cycloalkyl and aryl), 5-HMF ethers (5-R′OCH2-furfural, where R′=alkyl, cycloalkyl and aryl), 5-alkyl furfurals (5-R″-furfural, where R″=alkyl, cycloalkyl and aryl), mixed feed-stocks of 5-HMF and 5-HMF esters and mixed feed-stocks of 5-HMF and 5-HMF ethers and mixed feed-stocks of 5-HMF and 5-alkyl furfurals to generate a crude carboxylic acid slurry comprising FDCA, cooling a crude carboxylic acid slurry in cooling zone to form a cooled slurry stream. The cooled slurry stream is routed to a solid-liquid separation zone to generate a crude wet cake stream comprising FDCA that is dried in a drying zone to generate a dry carboxylic acid product stream comprising crude FDCA (cFDCA).

    Abstract translation: 公开了一种生产包含呋喃-2,5-二羧酸（FDCA）的干燥纯化羧酸产物的方法。 该方法包括氧化至少一种选自以下组的可氧化化合物：5-（羟甲基）糠醛（5-HMF），5-HMF酯（5-R（CO）OCH 2 - 糠醛，其中R =烷基，环烷基和芳基） ，5-HMF醚（5-R'OCH 2 - 糠醛，其中R'=烷基，环烷基和芳基），5-烷基糠醛（5-R“ - 糠醛，其中R”=烷基，环烷基和芳基），混合进料 5-HMF和5-HMF酯的原料和5-HMF和5-HMF醚的混合原料和5-HMF和5-烷基糠醛的混合原料以产生包含FDCA的粗制羧酸浆料，冷却 在冷却区中的粗羧酸浆料以形成冷却的浆料流。 将冷却的浆料流送至固液分离区，以产生包含FDCA的粗湿饼流，其在干燥区中干燥以产生包含粗FDCA（cFDCA）的干燥羧酸产物流。

Patent Agency Ranking