생분해성 폴리에스테르 수지의 제조방법 및 그로부터 제조된 생분해성 수지
    11.
    发明公开
    생분해성 폴리에스테르 수지의 제조방법 및 그로부터 제조된 생분해성 수지 审中-实审
    从该方法制备生物可降解聚酯树脂和树脂的方法

    公开(公告)号:KR1020160052906A

    公开(公告)日:2016-05-13

    申请号:KR1020140148269

    申请日:2014-10-29

    Abstract: 본발명은생분해성폴리에스테르수지의열안정성을개선하기위하여제조과정에서두 종류의열안정제를조합하여사용하는방법및 그로부터제조된생분해성수지에대한것이다. 이러한방법에서는두 종류의열안정제가상호보완적으로작용하여열안정성을향상시킨다. 따라서고온반응이가능하고반응성이증가하여반응시간이단축되고분자량이증가한다. 또한, 얻어진수지는산가가감소하여내가수분해성이향상되고색도가개선되어최종제품의옐로우잉(yellowing) 현상을방지할수 있으므로고품질의제품을제공할수 있다.

    Abstract translation: 本发明涉及在制备方法中使用两种类型的热稳定剂的组合以提高可生物降解的聚酯树脂的热稳定性的方法; 以及由其制造的可生物降解的树脂。 在这种方法中,两种类型的热稳定剂以互补的方式起作用并提高热稳定性。 因此,可以在高温下进行反应,同时增加反应性,从而减少所得产物的反应时间和增加分子量。 此外,所得树脂具有降低的酸值并且具有改善的耐水解性和增强的颜色。 因此,所得到的树脂可以防止最终产品变黄,并且可以提供高质量的产品。 热稳定剂包括:选自包含磷酸酯基化合物的第一组中的至少一种; 以及选自由亚磷酸酯类化合物和丙烯酸酯类化合物构成的第二组中的至少一种。

    생분해성 수지 조성물 및 생분해성 포장재
    12.
    发明公开
    생분해성 수지 조성물 및 생분해성 포장재 审中-实审
    可生物降解树脂组合物和可生物降解的包装材料

    公开(公告)号:KR1020140075468A

    公开(公告)日:2014-06-19

    申请号:KR1020120143835

    申请日:2012-12-11

    Abstract: Disclosed are a biodegradable resin composition and a biodegradable packing material. The disclosed biodegradable resin composition comprises: 30-50 parts by weight of polylactic acid (PLA); 20-30 parts by weight of polybutylene succinate (PBS); 20-30 parts by weight of polybutylene adipate-terephthalate (PBAT) copolymer; and 5-20 parts by weight of an inorganic additive. An NII bar, which has been molded at a temperature of 23°C to have a thickness of 3.2 mm, has a Notched Izod impact strength of 60 J/m or more measured according to ASTM D256.

    Abstract translation: 公开了一种可生物降解的树脂组合物和可生物降解的包装材料。 所公开的可生物降解的树脂组合物包含:30-50重量份的聚乳酸(PLA); 20-30重量份聚丁二酸丁二醇酯(PBS); 聚对苯二甲酸丁二醇酯(PBAT)共聚物20-30重量份; 和5-20重量份的无机添加剂。 已经在23℃的温度下成型为具有3.2mm的厚度的NII棒具有根据ASTM D256测量的60J / m以上的缺口伊佐德冲击强度。

    내가수분해성이 향상된 생분해성 지방족-방향족 폴리에스테르 공중합체 수지의 제조방법
    13.
    发明公开
    내가수분해성이 향상된 생분해성 지방족-방향족 폴리에스테르 공중합체 수지의 제조방법 审中-实审
    具有改善的抗水解性的可生物降解的亲水性芳族聚酯树脂的制备方法

    公开(公告)号:KR1020140024503A

    公开(公告)日:2014-03-03

    申请号:KR1020120090172

    申请日:2012-08-17

    CPC classification number: C08G63/46 C08G63/181 C08G63/20 C08G63/78

    Abstract: The present invention relates to a method for preparing a biodegradable polyester copolymer resin with improved hydrolysis resistance. The method according to the present invention comprises the steps of: first reacting an aliphatic dihydroxy compound and an aliphatic dicarboxylic acid compound; and further adding an aromatic dicarboxylate after the first reaction to secondarily react the same, wherein a short-chain alcohol type branching agent is added to a first or a second esterification reaction. The method allows slow esterification by an acid to proceed first, and then applies an aromatic dicarboxylate compound having no acid groups, thereby effectively controlling unreacted products or partially reacted products, which affect the acidity of a product, during the reaction, and thus it is possible to effectively control the acidity even without an excessive amount of excessive BDO, an excessive amount of chain extender or an expensive anti-hydrolysis agent, thereby improving hydrolysis resistance. In addition, it is possible to improve tear strength by minimizing branching agent content used therein.

    Abstract translation: 本发明涉及一种具有改善耐水解性的可生物降解聚酯共聚物树脂的制备方法。 根据本发明的方法包括以下步骤:首先使脂族二羟基化合物和脂族二羧酸化合物反应; 并在第一次反应后进一步加入芳族二羧酸酯二次反应,其中在第一次或第二次酯化反应中加入短链醇型支化剂。 该方法首先使酸缓慢酯化,然后施加不具有酸性基团的芳族二羧酸酯化合物,从而有效地控制在反应期间影响产品酸度的未反应产物或部分反应产物,因此它是 即使没有过多的过量的BDO,过量的扩链剂或昂贵的抗水解剂也可以有效地控制酸度,从而提高耐水解性。 此外,可以通过使其中使用的支化剂含量最小化来提高撕裂强度。

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