公开(公告)号：US20210122866A1

公开(公告)日：2021-04-29

申请号：US16627715

申请日：2019-07-09

Applicant: LG CHEM, LTD.

Inventor： Minseung SHIN ,  Mincheol JU ,  Sungwon HONG ,  Insoo KIM ,  Hyung Sub LEE

IPC: C08F236/04 ,  C08F2/22 ,  C08F212/10 ,  C08F6/14

Abstract: The present invention relates to a method of preparing a thermoplastic resin, a thermoplastic resin prepared by the same, and a thermoplastic resin composition including the same. More specifically, the method of the present invention includes a step of performing acid coagulation of emulsion polymerization latex, a step of treating coagulated slurry with a base and performing dehydration, and a step of adding a metal salt and water to dehydrated wet powder to adjust pH to 9 or more. According to the present invention, the method may increase the productivity of a thermoplastic resin, and the thermoplastic resin prepared by the method has excellent mechanical strength, thermal stability, and appearance properties. In addition, when the thermoplastic resin of the present invention is used in coating, the thermoplastic resin has an effect of improving the adhesive strength and appearance quality of a coating film.

公开(公告)号：US20230057580A1

公开(公告)日：2023-02-23

申请号：US17788891

申请日：2021-07-09

Applicant: LG CHEM, LTD.

Inventor： Mincheol JU ,  Hyung Sub LEE ,  Dae Woo LEE ,  Jae Bum SEO ,  Minseung SHIN ,  Sungwon HONG ,  Insoo KIM

IPC: C08F212/08 ,  C08F212/12 ,  C08F220/14 ,  C08F220/44 ,  C08F2/20 ,  C08F265/04

Abstract: The present disclosure relates to a styrene copolymer, a thermoplastic resin composition, and methods of preparing the styrene copolymer and the thermoplastic resin composition. More particularly, the present disclosure relates to a styrene copolymer having a low residual oligomer content and excellent transparency due to uniform polymerization of components to be added; and a thermoplastic resin composition including the styrene copolymer and an acrylic rubber graft copolymer and being suitable for a molded article having excellent heat resistance, scratch resistance, and surface appearance.