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    POLYLACTIC ACID COMPOSITE AND USE THEREOF
    4.
    发明申请
    POLYLACTIC ACID COMPOSITE AND USE THEREOF 审中-公开

    公开(公告)号：US20200291176A1

    公开(公告)日：2020-09-17

    申请号：US16644509

    申请日：2018-06-26

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

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

    IPC分类号： C08G63/08

    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: 1 μm≤D(50)≤2.6 μm. 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.

    BIODEGRADABLE POLYESTER COMPOSITION AND USE THEREOF
    5.
    发明申请
    BIODEGRADABLE POLYESTER COMPOSITION AND USE THEREOF 有权

    公开(公告)号：US20210061989A1

    公开(公告)日：2021-03-04

    申请号：US16644459

    申请日：2019-05-24

    申请人： KINGFA SCI. & TECH. CO., LTD.

    发明人： Chunping OUYANG ,  Jian JIAO ,  Kaijin MAI ,  Xueteng DONG ,  Hui YANG ,  Weida QU ,  Kai XIONG ,  Changli LU ,  Xiangbin ZENG ,  Tongmin CAI ,  Xianbo HUANG

    IPC分类号： C08L67/02

    摘要： The present invention discloses a biodegradable polyester composition, wherein the biodegradable polyester composition comprises the following components in parts by weight: i) 58 to 80 parts by weight of an aliphatic-aromatic copolyester; ii) 20 to 32 parts by weight of starch; and iii) 0 to 10 parts by weight of a processing agent. The present invention unexpectedly found by research that by using an aliphatic-aromatic copolyester in which an amount of aromatic carboxylic acid accounts for a total amount of diacid is 44 mol % to 48 mol % as a matrix resin, where the aliphatic-aromatic copolyester has a crystallization peak width D of 5° C. to 16° C., and by using starch of which a particle size D (50) is 2 μm to 12 μm as the other phase, and meanwhile by adding a specific amount of a processing agent, the polyester composition prepared has excellent transversal and longitudinal tear strengths, and the polyester composition has a biodegradation rate of 90% or more during the 12-week degradation test, satisfying the industrial compost.

    POLYLACTIC ACID 3D PRINTING MATERIAL AND PREPARATION METHOD THEREOF
    6.
    发明申请
    POLYLACTIC ACID 3D PRINTING MATERIAL AND PREPARATION METHOD THEREOF 有权

    公开(公告)号：US20210024745A1

    公开(公告)日：2021-01-28

    申请号：US16956556

    申请日：2019-05-28

    申请人： KINGFA SCI. & TECH. CO., LTD.

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

    IPC分类号： C08L67/04 ,  B33Y70/00 ,  B33Y40/10 ,  B29C64/314

    摘要： The present invention relates to a polylactic acid 3D printing material and a preparation method thereof, which belong to the technical field of polymer materials. The polylactic acid 3D printing material of the present invention comprises the following preparation raw materials in parts by weight: (a) 40-95 parts of crystalline or semi-crystalline polylactic acid, (b) 5-60 parts of noncrystalline polylactic acid, and (c) 0-1.0 parts of a processing aid. In the polylactic acid 3D printing material, a weight of dextral polylactic acid represents 0.5%-8% of a total weight of the polylactic acid. According to the present invention, a polylactic acid 3D printing material with a good aging resistance property can be obtained, by selecting and using two kinds of polylactic acids with different optical purities as raw materials, rationally distributing the proportional relationship between the two, and defining the content of dextral polylactic acid.

    A Composition of PBAT Resin
    7.
    发明申请
    A Composition of PBAT Resin 审中-公开

    公开(公告)号：US20180362729A1

    公开(公告)日：2018-12-20

    申请号：US15771262

    申请日：2016-08-30

    申请人： KINGFA SCI. & TECH. CO., LTD.

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

    IPC分类号： C08K5/156 ,  C08G63/183

    摘要： The present invention discloses a PBAT resin composition comprising: (a) Poly (butyleneadipate-co-terephthalate); (b) a cyclic esterified product having a structure represented by the formula (I) Wherein the content by weight of the cyclic esterified product is from 10 ppm to 2000 ppm, based on the total weight of the PBAT resin composition. In the present invention, the service life of the PBAT resin composition can be greatly extended by adding cyclic esterified product in the PBAT resin composition and controlling the content of the cyclic esterified product in the composition in the range of 10 ppm to 2000 ppm. And after boiled for 240 hours in 95% ethanol at 40° C., the film produced from blowing or the articles produced from injection have less surface precipitates, with excellent surface appearance properties.