Biodegradable polyester resin composition, biodegradable polyester film including the same and biodegradable molded article including biodegradable polyester resin composition

    公开(公告)号:US12098242B2

    公开(公告)日:2024-09-24

    申请号:US18320742

    申请日:2023-05-19

    申请人: Ecovance Co. Ltd.

    IPC分类号: C08G63/183

    CPC分类号: C08G63/183

    摘要: Disclosed is an eco-friendly biodegradable polyester resin composition, including: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein an alternating ratio of the polyester resin is 0.3 to 0.7, wherein the alternating ratio is a ratio of a diol, bonded between the aromatic dicarboxylic acid and the aliphatic dicarboxylic acid, among the diol. The diol may include 1,4-butanediol; the aromatic dicarboxylic acid may include terephthalic acid or dimethyl terephthalate; and the aliphatic dicarboxylic acid may include adipic acid. When the biodegradable polyester resin composition is dried at 80° C., placed in a stainless steel mold, and compressed at 210° C. under a pressure of 10 MPa for 3 minutes to produce a polyester sheet having a thickness of 300 μm, the sheet has a tensile strange range from 40 MPa to 60 MPa, an elongation at break range from 800% to 1100%, and Young's modulus range from 20 MPa to 80 MPa.

    POLYESTER RESIN COMPOSITION, AQUEOUS DISPERSION, PAINT COMPOSITION, AND COATING FILM

    公开(公告)号:US20240279390A1

    公开(公告)日:2024-08-22

    申请号:US18571853

    申请日:2022-07-26

    摘要: The present invention relates to a polyester resin composition containing a polyester resin (A) which satisfies requirements (i) The polyester resin (A) has an acid value of 100 eq/ton or more; (ii) The polyester resin composition contains substantially no curing agent; and (iii) The polyester resin composition has a storage elastic modulus E′ at 200°° C. of 1.0×104 Pa or more after subjected to a heating treatment at 240° C. for 1 hour. The polyester resin composition of the present invention is capable of suppressing a harmful outgas and is suitable for a paint for cans having excellent properties such as curing properties, retort resistance, and processability.