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    POLYTEREPHTHALATE-CO-SEBACATE RESIN AND METHOD FOR PREPARING SAME
    3.
    发明公开
    POLYTEREPHTHALATE-CO-SEBACATE RESIN AND METHOD FOR PREPARING SAME 审中-公开

    公开(公告)号：EP3553109A1

    公开(公告)日：2019-10-16

    申请号：EP17878750.3

    申请日：2017-11-30

    申请人： Kingfa Sci. & Tech. Co., Ltd. ,  Zhuhai Wango Chemical Co., Ltd.

    发明人： WANG, Weiwei ,  YUAN, Zhimin ,  CAI, Tongmin ,  HUANG, Xianbo ,  ZENG, Xiangbin ,  YUAN, Renxu ,  GUO, Zhilong ,  TANG, Meijun

    IPC分类号： C08G63/183 ,  C08G63/185 ,  C08G63/78

    摘要： The present invention discloses a poly(terephthalate-co-sebacate) resin and a preparation method thereof, wherein the poly(terephthalate-co-sebacate) resin is formed by polymerization of a diacid and a diol, the diacid consists of 45mol%-55mol% of terephthalic acid and 45mol%-55mol% of sebacic acid, the diol is 1,4-butanediol, and thermal performance parameters of the poly(terephthalate-co-sebacate) resin meet the following relational expression: T crystallization peak width at half height / T melting point − T crystallization temperature = 0.05 to 0.26 ; and a film made of the poly(terephthalate-co-sebacate) resin with a thickness of 25±1µm has a static friction coefficient of 0.2-0.3 and a light transmittance of 90% or above, and has balanced light transmittance and static friction coefficient, having a relatively low static friction coefficient whilst maintaining a relatively high light transmittance performance, and the resin can be smoothly processed without adding an antiblocking agent or a compatilizer, so that the obtained poly(terephthalate-co-sebacate) resin has good transparency and processing performance.

    BIODEGRADABLE POLYESTER COMPOSITION
    6.
    发明公开
    BIODEGRADABLE POLYESTER COMPOSITION 有权
    生物可降解聚酯组合物

    公开(公告)号：EP3260498A1

    公开(公告)日：2017-12-27

    申请号：EP17762460.8

    申请日：2017-02-24

    申请人： Kingfa Sci. & Tech. Co., Ltd. ,  Zhuhai Wango Chemical Co., Ltd. ,  Tianjin Kingsky Material Co., Ltd.

    发明人： LU, Changli ,  YUAN, Zhimin ,  CAI, Tongmin ,  HUANG, Xianbo ,  ZENG, Xiangbin ,  JIAO, Jian ,  YUAN, Renxu ,  ZHONG, Yuke ,  XIONG, Kai ,  YANG, Hui ,  MAI, Kaijin ,  DONG, Xueteng

    IPC分类号： C08L67/02 ,  C08L67/04 ,  C08L3/02 ,  C08K13/02 ,  C08K5/156 ,  C08K5/07

    CPC分类号： C08L67/02 ,  C08G59/1466 ,  C08J5/18 ,  C08J2367/02 ,  C08K5/0016 ,  C08K5/0075 ,  C08K5/07 ,  C08K5/156 ,  C08K13/02 ,  C08L3/02 ,  C08L67/04 ,  C08L2201/06 ,  C08L2201/08 ,  C08L25/14

    摘要： The present invention discloses a biodegradable polyester composition, wherein based on a total weight of the biodegradable polyester composition, a weight content of a cyclic ester compound having a structure shown as formula (I) is 100ppm-950ppm;

    and based on the total weight of the biodegradable polyester composition, a weight content of cyclopentanone is 0.5ppm-85ppm. In the present invention, by adding the cyclic ester compound and cyclopentanone into the composition and controlling the content of the cyclic ester compound and the content of cyclopentanone in a certain range in the composition, an anti-thermal oxidative aging property of the biodegradable polyester composition can be greatly improved. Besides, after being digested with 95% ethanol at 40°C for 240 hours, a film prepared by blow molding or a part prepared by injection molding has little precipitate separating out of the surface and has an excellent surface appearance property. In addition, the lubrication degree of film during the blow molding process of the biodegradable polyester can be improved. When the velocity of film blowing is 176 Kg/h, a range of a film thickness is less than 0.2µm and a relative deviation of the film thickness is less than 1%. Bubble stability and continuity of film blowing are guaranteed.

    摘要翻译： 本发明公开了一种生物可降解聚酯组合物，其中基于生物可降解聚酯组合物的总重量，具有式（I）所示结构的环状酯化合物的重量含量为100ppm-950ppm; 基于生物可降解聚酯组合物的总重量，环戊酮的重量含量为0.5ppm-85ppm。 在本发明中，通过将环状酯化合物和环戊酮添加到组合物中，并且在组合物中控制环酯化合物的含量和环戊酮的含量在一定范围内，可生物降解的聚酯组合物的抗热氧化老化性能 可以大大提高。 此外，用95％乙醇在40℃下消化240小时后，通过吹塑或通过注塑制备的部件制备的膜具有很少的从表面析出的沉淀，并具有优异的表面外观性能。 另外，可生物降解聚酯的吹塑成型过程中膜的润滑度可以得到改善。 当吹膜速度为176Kg / h时，膜厚范围小于0.2μm，膜厚相对偏差小于1％。 泡沫稳定性和吹膜连续性得到保证。

    POLYLACTIC ACID COMPOSITE MATERIAL AND APPLICATION THEREOF
    7.
    发明公开
    POLYLACTIC ACID COMPOSITE MATERIAL AND APPLICATION THEREOF 审中-公开

    公开(公告)号：EP3660097A1

    公开(公告)日：2020-06-03

    申请号：EP18880509.7

    申请日：2018-06-26

    申请人： Kingfa Sci. & Tech. Co., Ltd. ,  Zhuhai Wango Chemical Co., Ltd.

    发明人： LU, Changli ,  YUAN, Zhimin ,  CAI, Tongmin ,  HUANG, Xianbo ,  ZENG, Xiangbin ,  JIAO, Jian ,  XIONG, Kai ,  YANG, Hui ,  MAI, Kaijin ,  DONG, Xueteng ,  HE, Shihua

    IPC分类号： C08L67/04 ,  C08L71/02 ,  C08K3/34 ,  C08K5/11

    摘要： The present invention discloses a polylactic acid composite and use thereof. The polylactic acid composite includes the following components: (A) 89 to 98 parts by weight of polylactic acid; (B) 1 to 4 parts by weight of talcum powder; and (C) 1 to 7 parts by weight of a plasticizer. In the component (A), the polylactic acid has a polydispersity index P satisfying the following relationship: 1.55≤P≤2.02. In the component (B), the talcum powder has a particle size D (50) satisfying: 1µm≤D (50) ≤2.6µm. In the component (C), the plasticizer has a relative molecular weight M satisfying: 180≤M≤670. Through research, the present invention has unexpectedly discovered that by using the polylactic acid having the polydispersity index P satisfying the relationship 1.55≤P≤2.02 as a matrix, adding a specific range of content of ultrafine talcum powder as a nucleating agent, and selecting the plasticizer of a specific molecular weight as a crystallization promotion agent, the prepared polylactic acid composite has a light transmittance T≥80%, a haze H≤40%, and a heat deflection temperature HDT≥90°C, having significantly improved heat resistance and transparency.