公开(公告)号：EP4372039A1

公开(公告)日：2024-05-22

申请号：EP23840870.2

申请日：2023-07-04

申请人： LG Chem, Ltd.

发明人： KIM, Do Dam ,  LEE, Sang Ho ,  KANG, Jue Hyung ,  KIM, Jun Sik ,  PARK, Jong Suh ,  OH, Hyun Taek

IPC分类号： C08J11/22 ,  B29B9/06 ,  B29B11/10

摘要： Provided is a method for preparing a recycled ABS resin including: preparing an extrusion feed including an acrylonitrile butadiene styrene (ABS) base resin including polyurethane and a metal carboxylic acid salt or a hydrate of the metal carboxylic acid salt, and supplying the extrusion feed to an extruder to perform a depolymerization reaction of the polyurethane and extrude the extrusion feed, wherein a master index (M) value satisfies 0.2≤M≤0.6.

公开(公告)号：EP4393672A1

公开(公告)日：2024-07-03

申请号：EP23866594.7

申请日：2023-05-18

申请人： LG CHEM, LTD.

发明人： KIM, Jun Sik ,  PARK, Jong Suh ,  OH, Hyun Taek ,  LEE, Sang Ho ,  KIM, Do Dam ,  KANG, Jue Hyung ,  RYU, Jin Sook ,  CHA, Seon Cheol

IPC分类号： B29B17/02 ,  C08J11/02

CPC分类号： B29B17/02 ,  C08J11/02

摘要： The present invention provides an additive removal apparatus including a barrel that provides an inner space and has a polymer inlet on one side and a polymer outlet on the other side, a screw that is provided in the inner space of the barrel and axially rotates, and a solvent discharge unit that is provided at one end portion of the barrel, in which the barrel includes a swelling solvent inlet that is positioned between the polymer inlet and the polymer outlet and adjacent to the polymer inlet and a shrinking solvent inlet that is positioned between the polymer inlet and the polymer outlet and adjacent to the polymer outlet.