公开(公告)号：US20090054618A1

公开(公告)日：2009-02-26

申请号：US11990916

申请日：2006-08-28

申请人： Kenji Noda ,  Masanori Yamamoto ,  Shinichiro Matsuzono ,  Toshiyuki Hamano ,  Yoshio Akahane ,  Hidekazu Shouji

发明人： Kenji Noda ,  Masanori Yamamoto ,  Shinichiro Matsuzono ,  Toshiyuki Hamano ,  Yoshio Akahane ,  Hidekazu Shouji

IPC分类号： C08G63/183 ,  C08G63/85

CPC分类号： C08G63/85 ,  C08G63/80

摘要： An object of the present invention is to provide polybutylene terephthalate which has excellent color tone, hydrolysis resistance, heat stability, transparency and moldability as well as a less content of impurities, can be produced with maintaining its productivity while preventing from generation of tetrahydrofuran as a by-product, and can be suitably applied to films, monofilaments, fibers, electric and electronic parts, automobile parts, etc.In an aspect of the present invention, there is provided a process for continuously producing polybutylene terephthalate from terephthalic acid and 1,4-butanediol in a presence of a catalyst comprising a titanium compound and a compound of at least one metal selected from Group 1 and Group 2 of the Periodic Table, which process satisfies such the following requirements (a) to (c) that: (a) an oligomer is obtained by conducting a continuously esterification reaction of terephthalic acid and 1,4-butanediol in the presence of titanium catalyst in an amount of not more than 460 μmol as a titanium atom based on 1 mol of terephthalic acid unit; (b) polycondensation reaction of the said oligomer is continuously conducted in the presence of compound of at least one metal selected from Group 1 and Group 2 of the Periodic Table as the catalyst in an amount of not more than 450 μmol as the metal atom based on 1 mol of terephthalic acid unit; and (c) the said compound of at least one metal may be added to a stage before obtaining an oligomer having esterification conversion of not less than 90% in an amount of not more than 300 μmol as the metal atom based on 1 mol of terephthalic acid unit, and the said compound of at least one metal may be added to a stage on or after obtaining an oligomer having esterification conversion of not less than 90% in an amount of not less than 10 μmol as the metal atom based on 1 mol of terephthalic acid unit.

摘要翻译： 本发明的目的是提供具有优异色调，耐水解性，热稳定性，透明性和成型性以及较少杂质含量的聚对苯二甲酸丁二醇酯，同时保持其生产率，同时防止产生四氢呋喃作为 副产物，可适用于薄膜，单丝，纤维，电气电子部件，汽车部件等。在本发明的一个方面，提供了一种从对苯二甲酸和1， 在包含钛化合物和选自元素周期表第1族和第2族中的至少一种金属的化合物的催化剂存在下，该方法满足以下要求（a）至（c）：（ a）通过在钛催化剂的存在下进行对苯二甲酸和1,4-丁二醇的连续酯化反应获得低聚物 相对于1摩尔对苯二甲酸单元，钛原子为460摩尔以下的量; （b）所述低聚物的缩聚反应在作为催化剂的至少一种选自元素周期表第1族和第2族的金属的化合物存在下连续进行，其金属原子数不超过450μmol 在1mol对苯二甲酸单元上; 和（c）所述至少一种金属的化合物可以在获得具有不低于90％的酯化转化率的低聚物之后的阶段中加入到作为金属原子的不超过300μmol的量，基于1mol对苯二甲酸 酸单元，并且所述至少一种金属的化合物可以在获得基于1摩尔的金属原子的不少于10摩尔的酯化转化率为90％以上的低聚物或其后添加 的对苯二甲酸单元。

公开(公告)号：US07732556B2

公开(公告)日：2010-06-08

申请号：US11084112

申请日：2005-03-21

申请人： Kazuyuki Okubo ,  Masanori Yamamoto ,  Yoshio Akahane ,  Toshiyuki Hamano

发明人： Kazuyuki Okubo ,  Masanori Yamamoto ,  Yoshio Akahane ,  Toshiyuki Hamano

IPC分类号： C08G63/02

CPC分类号： C08G63/785 ,  Y02P20/582

摘要： A problem of the invention is to provide a process of producing polyesters having a stable quality and a process of producing polyesters with a greatly reduced load against the environment.The invention relates to a process of producing polyesters by using a polycondensation reaction apparatus provided with one or more sets of an ejector, a condenser placed in the downstream portion of the ejector and a hot well tank connected to the condenser via a barometric leg and including a step of driving the ejector by a vapor composed mainly of 1,4-butanediol, condensing the vapor composed mainly of 1,4-butanediol as discharged from the ejector in the condenser placed in the downstream portion of the ejector, and making the reactor in a reduced pressure state to undergo polycondensation reaction, characterized in that the concentration of tetrahydrofuran contained in a sealing liquid in at least one hot well tank is not more than 4% by weight.

摘要翻译： 本发明的一个问题是提供一种具有稳定质量的聚酯的生产方法和一种生产聚酯的方法，该聚酯具有大大降低的环境负荷。 本发明涉及一种通过使用缩聚反应装置制造聚酯的方法，所述缩聚反应装置设置有一组或多组喷射器，放置在喷射器下游部分的冷凝器和通过气压连接到冷凝器的热井箱， 通过主要由1,4-丁二醇构成的蒸汽驱动喷射器的步骤，将放置在喷射器的下游部分的冷凝器中的从喷射器排出的主要由1,4-丁二醇组成的蒸气冷凝，并使反应器 在减压状态下进行缩聚反应，其特征在于，至少一个热水槽中的密封液中所含的四氢呋喃的浓度不超过4重量％。

公开(公告)号：US20050239999A1

公开(公告)日：2005-10-27

申请号：US11084112

申请日：2005-03-21

申请人： Kazuyuki Okubo ,  Masanori Yamamoto ,  Yoshio Akahane ,  Toshiyuki Hamano

发明人： Kazuyuki Okubo ,  Masanori Yamamoto ,  Yoshio Akahane ,  Toshiyuki Hamano

IPC分类号： C08G63/78 ,  F25B1/00 ,  C08G63/02

CPC分类号： C08G63/785 ,  Y02P20/582

摘要： A problem of the invention is to provide a process of producing polyesters having a stable quality and a process of producing polyesters with a greatly reduced load against the environment. The invention relates to a process of producing polyesters by using a polycondensation reaction apparatus provided with one or more sets of an ejector, a condenser placed in the downstream portion of the ejector and a hot well tank connected to the condenser via a barometric leg and including a step of driving the ejector by a vapor composed mainly of 1,4-butanediol, condensing the vapor composed mainly of 1,4-butanediol as discharged from the ejector in the condenser placed in the downstream portion of the ejector, and making the reactor in a reduced pressure state to undergo polycondensation reaction, characterized in that the concentration of tetrahydrofuran contained in a sealing liquid in at least one hot well tank is not more than 4% by weight.

摘要翻译： 本发明的一个问题是提供一种具有稳定质量的聚酯的生产方法和一种生产聚酯的方法，该聚酯具有大大降低的环境负荷。 本发明涉及一种通过使用缩聚反应装置制造聚酯的方法，所述缩聚反应装置设置有一组或多组喷射器，放置在喷射器下游部分的冷凝器和通过气压连接到冷凝器的热井箱， 通过主要由1,4-丁二醇构成的蒸汽驱动喷射器的步骤，将放置在喷射器的下游部分的冷凝器中的从喷射器排出的主要由1,4-丁二醇组成的蒸气冷凝，并使反应器 在减压状态下进行缩聚反应，其特征在于，至少一个热水槽中的密封液中所含的四氢呋喃的浓度不超过4重量％。