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    • 22. 发明授权
    • Process for the preparation of cyclic esters and method for purification of the same
    • 环酯的制备方法及其纯化方法
    • US06916939B2
    • 2005-07-12
    • US10344461
    • 2001-08-08
    • Kazuyuki YamaneYukichika KawakamiHajime HoshiKazuhiko Sunagawa
    • Kazuyuki YamaneYukichika KawakamiHajime HoshiKazuhiko Sunagawa
    • C07D319/12
    • C08J3/28C07D319/12C08J11/24C08J2300/14C08J2367/04Y02W30/706
    • The present invention provides a process for production of a cyclic ester by depolymerization of an aliphatic polyester. In the process, a mixture containing the aliphatic polyester and a specific polyalkylene glycol ether, which has a boiling point of 230-450° C. and a molecular weight of 150-450, is heated under normal or reduced pressure to a temperature at which depolymerization of the aliphatic polyester takes place. Then, a substantially homogeneous solution phase, consisting of the melt phase of the aliphatic polyester and the liquid phase of the polyalkylene glycol ether, is formed. Heating of the solution phase is continued to form the cyclic ester by depolymerization and distil out the cyclic ester together with the polyalkylene glycol ether, and then the cyclic ester is recovered from the distillate. The present invention also provides a process for purification of a crude cyclic ester by use of the specific polyalkylene glycol ether described above.
    • 本发明提供了通过脂肪族聚酯的解聚制备环状酯的方法。 在该方法中,将含有脂族聚酯和特定的聚亚烷基二醇醚的混合物在沸点为230-450℃,分子量为150-450的条件下,在正常或减压下加热至 发生脂肪族聚酯的解聚。 然后,形成由脂肪族聚酯的熔融相和聚亚烷基二醇醚的液相组成的基本均匀的溶液相。 溶液相的加热继续通过解聚形成环酯,并与聚亚烷基二醇醚一起蒸馏出环状酯,然后从馏出物中回收环状酯。 本发明还提供了通过使用上述特定的聚亚烷基二醇醚来纯化粗环酯的方法。
    • 24. 发明申请
    • AROMATIC POLYESTER RESIN COMPOSITION
    • 芳香聚酯树脂组合物
    • US20120178870A1
    • 2012-07-12
    • US13429837
    • 2012-03-26
    • Hiroyuki SATOKazuyuki YamaneYuki HokariFuminori Kobayashi
    • Hiroyuki SATOKazuyuki YamaneYuki HokariFuminori Kobayashi
    • C08L67/00
    • C08L67/02C08K5/29C08K5/521C08K2201/008C08L67/04C08L2666/18
    • An aromatic polyester resin composition, comprising: a melt-kneaded product of 99-70 wt. parts of an aromatic polyester resin and 1-30 wt. parts (providing a total of 100 wt. parts together with the aromatic polyester resin) of a polyglycolic acid resin, wherein the aromatic polyester resin is an aromatic polyester resin polymerized with an antimony compound (catalyst), the polyglycolic acid resin is a polyglycolic acid resin obtained by ring-opening polymerization of glycolide, and the composition further contains a metal-deactivating agent in a proportion of 17-500 mol. % with respect to the antimony in the aromatic polyester resin. As a result, gas generation during the melt-processing of a composition obtained by adding a relatively small amount of polyglycolic acid resin to an aromatic polyester resin is effectively suppressed to provide an aromatic polyester resin composition with a good gas-barrier property.
    • 一种芳族聚酯树脂组合物,其包含:99-70重量份的熔融捏合产物, 部分芳族聚酯树脂和1-30wt。 聚乙醇酸树脂的部分(与芳族聚酯树脂一起共提供100重量份),其中芳族聚酯树脂是用锑化合物(催化剂)聚合的芳族聚酯树脂,聚乙醇酸树脂是聚乙醇酸 通过乙交酯的开环聚合获得的树脂,并且该组合物还含有比例为17-500mol的金属钝化剂。 相对于芳族聚酯树脂中的锑。 结果,通过将相对少量的聚乙醇酸树脂加入到芳族聚酯树脂中而获得的组合物进行熔融加工时的气体产生被有效地抑制,从而提供具有良好阻气性的芳族聚酯树脂组合物。
    • 26. 发明申请
    • Production Process of Glycolide
    • 乙交酯的生产工艺
    • US20110263875A1
    • 2011-10-27
    • US13142012
    • 2009-12-09
    • Shigeru SuzukiKazuyuki YamaneToshihiko OnoKazuhiko Sunagawa
    • Shigeru SuzukiKazuyuki YamaneToshihiko OnoKazuhiko Sunagawa
    • C07D319/12
    • C07D319/12
    • The invention provides a production process of glycolide comprising the respective steps of: Step 1 of heating a mixture containing a glycolic acid oligomer and a high boiling polar organic under normal or reduced pressure to reflux the mixture and at that time, conducting a total reflux operation in a reflux time within a range of 0.1 to 20 hours under conditions that substantially the whole amount of a distillate distilled out of a reflux system containing the mixture is refluxed into the reflux system; Step 2 of heating the mixture after the total reflux operation or a mixture obtained by adding the high boiling polar organic solvent to a glycolic acid oligomer component recovered from the mixture after the total reflux operation to conduct depolymerization; and Step 3 of collecting glycolide from a co-distillate.
    • 本发明提供了一种乙交酯的制备方法,其包括以下各步骤:步骤1,在正常或减压下加热含有乙醇酸低聚物和高沸点极性有机物的混合物以回流混合物,并且此时进行总的回流操作 在从含有该混合物的回流系统蒸馏出的基本上全部量的馏出物回流至回流系统的条件下,在0.1至20小时的范围内的回流时间内, 在全部回流操作之后加热混合物的步骤2或通过在完全回流操作后从混合物中回收的乙醇酸低聚物组分加入高沸点极性有机溶剂而获得的混合物进行解聚; 和从共馏出物收集乙交酯的步骤3。