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    • 3. 发明申请
    • METHOD FOR PREPARING LACTIDE USING AN IONIC SOLVENT
    • 使用离子溶剂制备乳液的方法
    • US20140187798A1
    • 2014-07-03
    • US14061088
    • 2013-10-23
    • Hyundai Motor Company
    • Si Hwan KimChae Hwan HongDo Suck HanJi Yeon Seo
    • C07D319/12
    • C07D319/12
    • Disclosed is a method for preparing lactide by using a solvent. According to the method, since an ionic liquid is used as a solvent in a second step in the course of preparing lactide, it is possible to secure mobility of the resulting reactant, and decrease a reaction temperature. In addition, the ionic liquid absorbs moisture generated during the reaction, and thus prevents degradation of lactide which is susceptible to moisture. Furthermore, to the present method allows for the preparation of lactide successively through the continuous supply of lactic acid oligomers. Because the use of an ionic liquid minimizes the contamination of a reactive group with by-products, the use of a solvent for reactor washing is unnecessary. Further, owing to a high boiling point of the ionic liquid, the ionic liquid can be easily harvested and recycled.
    • 公开了通过使用溶剂制备丙交酯的方法。 根据该方法,由于在制备丙交酯的过程中在第二步中使用离子液体作为溶剂,因此可以确保所得反应物的迁移率,并降低反应温度。 此外,离子液体吸收在反应期间产生的水分,从而防止易受潮湿影响的丙交酯的降解。 此外,本方法允许通过连续供应乳酸低聚物连续制备丙交酯。 因为使用离子液体使反应性基团与副产物的污染最小化,所以不需要使用用于反应器洗涤的溶剂。 此外,由于离子液体的高沸点,离子液体可以容易地收获和再循环。
    • 10. 发明授权
    • Preparation method of flexible polylactide stereocomplex and the compound thereof
    • 柔性聚交酯立体络合物的制备方法及其化合物
    • US09096709B2
    • 2015-08-04
    • US14519841
    • 2014-10-21
    • Hyundai Motor CompanyKorea Institute of Science and Technology
    • Chae Hwan HongDo Suck HanSoo Hyun KimYoung Mee Jung
    • C08G63/08C08J9/00C08J9/12C08G63/81C08J9/28
    • C08G63/08C08G63/81C08J9/28C08J2367/04Y02P20/544
    • Disclosed are a polylactide stereocomplex with improved thermal stability and thus improved processability and a method for preparing the same. In order to confer flexibility to polymer chains, D-type polylactide polymer containing a small amount of caprolactone (poly D-lactide-caprolactone copolymer) is synthesized and it is uniformly mixed with L-type single-phase polylactide to prepare a flexible polylactide stereocomplex. Since the polylactide stereocomplex having flexible polymer chains has superior heat resistance and mechanical stability and experiences little decrease of the degree of stereocomplex formation even after thermal processing, the polylactide stereocomplex having improved thermal stability can be advantageously used for engineering plastics requiring high strength and good thermal stability, alternative materials for general-use plastics, high-performance medical materials, or the like because of its remarkably improved processability.
    • 公开了具有改进的热稳定性和因此改善的加工性的聚交酯立体络合物及其制备方法。 为了赋予聚合物链柔性,合成含有少量己内酯(聚D-丙交酯 - 己内酯共聚物)的D型聚丙交酯聚合物,并与L型单相聚丙烯酸酯均匀混合以制备柔性聚交酯立体络合物 。 由于具有柔性聚合物链的聚交酯立体络合物具有优异的耐热性和机械稳定性,并且即使在热加工后也几乎不降低立体复合物形成程度,所以具有改善的热稳定性的聚交酯立体络合物可有利地用于需要高强度和良好热的工程塑料 稳定性,一般用途塑料的替代材料,高性能医疗材料等,因为其显着改进的加工性能。