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1. 发明公开

EP3900909A1 EXTRUSION DEVICE 审中-实审
公开(公告)号：EP3900909A1
公开(公告)日：2021-10-27
申请号：EP20892275.7
申请日：2020-08-13
申请人： LG Chem, Ltd.
发明人： LEE, Gyu Il , JEONG, Byeong Joon , CHOI, Woo Seon , CHOI, Young Hyun , YEOM, Eung Seob
IPC分类号： B29C48/36 , B29C48/505 , B29C48/91 , B29C48/92 , B29C48/76 , B29C48/00 , B29C48/57 , B29C48/54 , B29C48/55
摘要： The present invention provides an extruder configured to extrude a solid raw material containing moisture, the extruder comprising: a barrel having a hollow tubular shape in a longitudinal direction, wherein a hopper into which a raw material is put is coupled to one side of the barrel, a discharge port through which a dehydrated raw material is discharged is provided on the other side of the barrel, and a slot portion, through which the inside and outside of the barrel communicate each other, is provided in a specific section between the discharge port and the hopper; a rod-shaped screw provided with screw threads on an outer circumferential surface thereof so that the screw is mounted within the barrel to transfer a raw material put into the hopper to the discharge port while axially rotating in one direction; and a heater part mounted on the barrel to heat the raw material. The raw material introduced into the barrel through the hopper is gradually heated by the heater part while being transferred within the barrel through the screw. A kneading zone, in which raw materials transferred by the screw threads are compressed, is formed on the screw. Since the raw material is melted within the barrel so that at least a portion of the raw material is phase-changed into a liquid state, a heating temperature of the heater part and an axial rotation speed of the screw are controlled so that a sealing membrane that shields an inner transverse section of the barrel is formed from the liquid raw material in the kneading zone.

2. 发明公开

EP4067399A1 GRAFT COPOLYMER AND METHOD FOR PREPARING SAME 审中-公开
公开(公告)号：EP4067399A1
公开(公告)日：2022-10-05
申请号：EP20892158.5
申请日：2020-11-23
申请人： LG Chem, Ltd.
发明人： LEE, Gyu Il , JEONG, Byeong Joon , CHOI, Woo Seon , CHOI, Young Hyun , YEOM, Eung Seob
IPC分类号： C08F279/04 , C08F265/06 , C08L55/02 , C08L51/00 , C08L101/00 , B29C48/00 , B29C48/92 , B29B11/10
摘要： The present invention relates to a graft copolymer and a method for preparing the same, wherein the graft copolymer has merits of a superior storage convenience compared to existing dry powder and a high whiteness index, and thus may be widely applied to various fields.

3. 发明公开

EP3421451A1 METHOD FOR PRODUCING N-SUBSTITUTED MALEIMIDE USING SOLID ACID CATALYST 有权
公开(公告)号：EP3421451A1
公开(公告)日：2019-01-02
申请号：EP17887093.7
申请日：2017-11-06
申请人： LG Chem, Ltd.
发明人： CHEON, Joo Young , CHOI, Jun Seon , KIM, Ji Yeon , JOE, Wang Rae , KIM, Kyung Soo , YEOM, Eung Seob , LEE, Won Kyun
IPC分类号： C07D207/448 , C07D207/452 , B01J31/12
摘要： The present invention relates to a synthesis method of N-substituted maleimides using a non-homogeneous solid acid catalyst, and particularly, a synthesis method of N-substituted maleimides with high synthesis yield by using a zirconium(IV) hydrogenphosphate as a catalyst, by which, the loss of the catalyst is minimized, the separation and recovering processes of the catalyst are simplified, in case when the activity of the separated and recovered catalyst is decreased, the complete regeneration of the catalyst is possible via washing or firing, and solvents that could be used during a washing process of the catalyst are not limited.

4. 发明公开

EP3900910A1 EXTRUDING APPARATUS 审中-实审
公开(公告)号：EP3900910A1
公开(公告)日：2021-10-27
申请号：EP20893821.7
申请日：2020-08-13
申请人： LG Chem, Ltd.
发明人： LEE, Gyu Il , JEONG, Byeong Joon , CHOI, Woo Seon , CHOI, Young Hyun , YEOM, Eung Seob
IPC分类号： B29C48/36 , B29C48/505 , B29C48/91 , B29C48/92 , B29C48/76 , B29C48/00 , B29C48/57 , B29C48/55
摘要： The present invention provides an extruder configured to extrude a solid raw material containing moisture, the extruder comprising: a barrel having a hollow tubular shape in a longitudinal direction, wherein a hopper into which a raw material is put is coupled to one side of the barrel, and a discharge port through which a dehydrated raw material is discharged is provided on the other side of the barrel; a rod-shaped screw provided with screw threads on an outer circumferential surface thereof so that the screw is mounted within the barrel to transfer a raw material put into the hopper to the discharge port while axially rotating in one direction; a vent part disposed at one point between the hopper and the discharge port to discharge vapor generated within the barrel to the outside; and a heater part mounted on the barrel to heat the raw material. The raw material introduced into the barrel through the hopper is gradually heated by the heater part while being transferred within the barrel through the screw. A kneading zone, in which raw materials transferred by the screw threads are compressed, is formed on the screw. Since the raw material is melted within the barrel so that at least a portion of the raw material is phase-changed into a liquid state, a heating temperature of the heater part and an axial rotation speed of the screw are controlled so that a sealing membrane that shields an inner transverse section of the barrel is formed from the liquid raw material in the kneading zone.

5. 发明授权

EP3421451B1 METHOD FOR PRODUCING N-SUBSTITUTED MALEIMIDE USING SOLID ACID CATALYST 有权
公开(公告)号：EP3421451B1
公开(公告)日：2020-03-25
申请号：EP17887093.7
申请日：2017-11-06
申请人： LG Chem, Ltd.
发明人： CHEON, Joo Young , CHOI, Jun Seon , KIM, Ji Yeon , JOE, Wang Rae , KIM, Kyung Soo , YEOM, Eung Seob , LEE, Won Kyun
IPC分类号： C07D207/448 , C07D207/452 , B01J31/12

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