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    Method and apparatus for producing polyester
    6.
    发明专利
    Method and apparatus for producing polyester 审中-公开
    生产聚酯的方法和装置

    公开(公告)号：JP2014019827A

    公开(公告)日：2014-02-03

    申请号：JP2012161856

    申请日：2012-07-20

    Applicant: Hitachi Ltd ,  株式会社日立製作所

    Inventor： MATSUO TOSHIAKI ,  KAMIKAWA MASAYUKI ,  KONDO TAKEYUKI ,  MAEDA NORIFUMI

    IPC: C08G63/78

    CPC classification number: C08G63/80 ,  C08G63/181 ,  C08G63/78 ,  C08G63/785

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing polyester having an appropriate molecular mass for coping with various molding processes, capable of suppressing polymer coloring accompanying minor reaction at synthesis.SOLUTION: A method for producing polyester includes: an esterification step S1 of esterifying ethylene glycol and 2,5-furan dicarboxylate to generate oligomer; and a condensation polymerization step S2 of condensation-polymerizing the oligomer to produce polyester. The esterification reaction is carried out at 200-250°C.

    Abstract translation: 要解决的问题：提供一种生产具有适合分子量的聚酯的方法，用于处理各种成型方法，能够抑制合成时伴随轻微反应的聚合物着色。溶解方法：一种生产聚酯的方法包括：酯化步骤S1 乙二醇和2,5-呋喃二羧酸酯，生成低聚物; 和使低聚物缩聚而制造聚酯的缩聚步骤S2。 酯化反应在200-250℃下进行。

    Method for production of polyester
    8.
    发明专利
    Method for production of polyester 有权
    生产聚酯的方法

    公开(公告)号：JP2013028656A

    公开(公告)日：2013-02-07

    申请号：JP2011163558

    申请日：2011-07-26

    Applicant: Mitsubishi Chemicals Corp ,  三菱化学株式会社

    Inventor： MATSUZONO SHINICHIRO ,  SUZUKI TAKAYUKI ,  UTSUNOMIYA MASARU ,  IZAWA YUSUKE

    IPC: C08G63/78 ,  C08G63/16

    CPC classification number: C08G63/183 ,  C08G63/785

    Abstract: PROBLEM TO BE SOLVED: To provide a method for obtaining high-quality polyester by suppressing the generation of THF from 1,4-BG caused by heating and stably performing the polycondensation reaction of the polyester without causing the deterioration of a basic unit and a vacuum degree, in the method for production of polyester which indispensably needs a vacuum adding device having a steam ejector of 1,4-BG.SOLUTION: In the method which continuously produces the polyester by making a diol component with 1,4-BG as a main component and a dicarboxylic acid component esterification-react with each other and/or making them ester exchange-react with each other, and by making them polycondensation-react with each other, (a) the polycondensation reaction is performed in a vacuum, (b) the vacuum adding device comprises the steam ejector of 1,4-butanediol, (c) 1,4-butanediol steam used in the steam ejector is used as the diol component after being condensed, and (d) pH of 1,4-BG supplied to a steam generator for driving the steam ejector is not lower than 7.0 and not higher than 11.5.

    Abstract translation: 要解决的问题：提供一种通过抑制由加热引起的1,4-BG产生THF并稳定地进行聚酯的缩聚反应而获得高质量聚酯的方法，而不会引起基本单元的劣化 和真空度，在聚酯的制造方法中，该方法不可或缺地需要具有1,4-BG蒸汽喷射器的真空添加装置。 解决方案：在以1,4-BG为主要成分的二醇组分和二羧酸组分酯化 - 彼此反应和/或使其与每个酯交换反应的方法中，连续生产聚酯 （a）在真空中进行缩聚反应，（b）真空添加装置包括1,4-丁二醇的蒸汽喷射器，（c）1,4-丁二醇的蒸气喷射器， 在蒸汽喷射器中使用的丁二醇蒸汽在冷凝后用作二醇组分，（d）供应到用于驱动蒸汽喷射器的蒸汽发生器的1,4-BG的pH不低于7.0且不高于11.5。 版权所有（C）2013，JPO＆INPIT

    Process and apparatus for producing aliphatic polyester
    9.
    发明专利
    Process and apparatus for producing aliphatic polyester 有权
    生产聚酯聚酯的方法和装置

    公开(公告)号：JP2012251112A

    公开(公告)日：2012-12-20

    申请号：JP2011126634

    申请日：2011-06-06

    Applicant: Kureha Corp ,  株式会社クレハ

    Inventor： HAYASHI NAOKI ,  WATANABE TAKAHIRO ,  SUZUKI YOSHINORI ,  YAMANE KAZUYUKI

    IPC: C08G63/78 ,  C08G63/08

    CPC classification number: B01J19/20 ,  B01J19/1862 ,  B01J2219/00094 ,  C08G63/08 ,  C08G63/78 ,  C08G63/785

    Abstract: PROBLEM TO BE SOLVED: To provide a technology for producing an aliphatic polyester, wherein a desired molecular weight can be set easily and accurately.SOLUTION: A process of producing an aliphatic polyester includes the steps of: heating a cyclic ester at a melting point or higher; converting a moisture contained in the cyclic ester into free carboxylic acid; measuring an amount of the free carboxylic acid in the molten cyclic ester; feeding a proton-source compound in an amount determined based on the measured amount of the free carboxylic acid into the molten cyclic ester; and subjecting the cyclic ester to ring-opening polymerization.

    Abstract translation: 要解决的问题：提供一种生产脂肪族聚酯的技术，其中可以容易且精确地设定所需的分子量。 解决方案：生产脂族聚酯的方法包括以下步骤：加热熔点或更高的环酯; 将环酯中含有的水分转化为游离羧酸; 测量熔融环酯中游离羧酸的量; 将质子源化合物以基于测量的游离羧酸的量确定为熔融环酯的量加入; 并使环酯进行开环聚合。 版权所有（C）2013，JPO＆INPIT

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