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公开(公告)号：US11905346B2
公开(公告)日：2024-02-20
申请号：US17484015
申请日：2021-09-24
发明人： Byoung Kyu Kwak , Sun Joo Kim , Hong Chan Kim , Kyung Jin Ma , Doh Yeon Park , Jae Eun Lee , Ho Seong Lee , Juan Carlos Estevez Videira , Manuel David Recasens Alvaro , In Su Lee , Wan Ju Jeong
IPC分类号： C08F2/01 , C08F2/06 , C08F6/00 , C08F6/10 , C08F210/02 , C08F220/04 , B01J8/00 , B01J19/00 , B01J19/06 , B01J19/24 , B01J8/22 , B01J20/30 , C08F220/08 , C08F6/06
CPC分类号： C08F210/02 , B01J8/228 , B01J19/0053 , B01J19/06 , B01J19/2465 , B01J20/3071 , C08F2/01 , C08F2/06 , C08F6/005 , C08F6/008 , C08F6/06 , C08F6/10 , C08F220/04 , C08F220/08 , B01J2208/00761 , B01J2219/00353 , B01J2219/00389 , B01J2219/00418 , C08F2800/20
摘要： The present invention relates to a method for producing an ethylene-based copolymer, and more particularly, to a method for producing an ethylene-based copolymer capable of increasing process efficiency by preventing plugging and corrosion of a facility. The method for producing an ethylene-based copolymer includes a producing mode and a washing mode of which one is selectively performed. The producing mode includes: a) hyper-compressing primary compressed ethylene, and a mixture including a carboxylic acid-containing comonomer and a polar solvent to produce a compressed material; b) reacting the compressed material to produce a reaction product including an ethylene-based copolymer; and c) separating and recovering unreacted residues from the reaction product and introducing the unreacted residues into the mixture of step a). The washing mode includes: re-supplying the compressed material produced in step a) to step a) as a mixture, without performing step b).
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公开(公告)号：US20220098340A1
公开(公告)日：2022-03-31
申请号：US17484015
申请日：2021-09-24
发明人： Byoung Kyu Kwak , Sun Joo Kim , Hong Chan Kim , Kyung Jin Ma , Doh Yeon Park , Jae Eun Lee , Ho Seong Lee , Juan Carlos Estevez Videira , Manuel David Recasens Alvaro , In Su Lee , Wan Ju Jeong
IPC分类号： C08F210/02 , B01J19/06 , B01J19/24
摘要： The present invention relates to a method for producing an ethylene-based copolymer, and more particularly, to a method for producing an ethylene-based copolymer capable of increasing process efficiency by preventing plugging and corrosion of a facility. The method for producing an ethylene-based copolymer includes a producing mode and a washing mode of which one is selectively performed. The producing mode includes: a) hyper-compressing primary compressed ethylene, and a mixture including a carboxylic acid-containing comonomer and a polar solvent to produce a compressed material; b) reacting the compressed material to produce a reaction product including an ethylene-based copolymer; and c) separating and recovering unreacted residues from the reaction product and introducing the unreacted residues into the mixture of step a). The washing mode includes: re-supplying the compressed material produced in step a) to step a) as a mixture, without performing step b).
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公开(公告)号：US20220306778A1
公开(公告)日：2022-09-29
申请号：US17695102
申请日：2022-03-15
发明人： Sang Ha Son , Wan Ju Jeong , Doh Yeon Park
IPC分类号： C08F210/02 , B29C48/00 , B29C48/05
摘要： A method for producing an ethylene-acrylic acid copolymer may minimize the neck-in phenomenon of the strand by discharging the copolymer strand by controlling the discharging temperature of the produced copolymer to be 200 to 300° C., has excellent workability, processability, and moldability, and melt index (MI) is easy to control. In addition, the ethylene-acrylic acid copolymer produced by this method has the effect of having high melt tension.
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公开(公告)号：US20220242980A1
公开(公告)日：2022-08-04
申请号：US17427131
申请日：2020-01-29
发明人： In Hyoup Song , Hong Chan Kim , Jang Hoon Ock , Jung A Lee , Wan Ju Jeong
IPC分类号： C08F210/02 , C08F220/06 , C08F2/01 , C08F2/38
摘要： In a method of producing an ethylene-carboxylic acid copolymer according to an embodiment of the present invention, a carboxylic acid monomer and a polar co-solvent are introduced separately into a mixing unit or stored together in a supply unit to form a mixture. The mixture and ethylene are injected into a reactor to be copolymerized. Reaction kinetic properties of the carboxylic acid monomer and the polar co-solvent are controlled to suppress a formation of by-products.
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