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1.发明公开
公开(公告)号：EP4450582A1
公开(公告)日：2024-10-23
申请号：EP22908025.4
申请日：2022-12-16
申请人： POSCO Co., Ltd
发明人： HA, Bongwoo , KIM, Jungwoo , NO, Taeyoung , LEE, Donggyu
IPC分类号： C09J175/04 , C09J11/08 , C09D175/04 , C09D7/65 , C08G18/76 , C08G18/32 , C08L63/00 , B32B15/01 , B32B7/12
摘要： The present disclosure provides an electrical steel sheet adhesive coating composition containing a mixed resin of a polyurethane resin and an epoxy resin, wherein the mixed resin includes, with respect to 100 parts by weight of the mixed resin, 55 to 98 parts by weight of the polyurethane resin and 2 to 45 parts by weight of the epoxy resin, and the polyurethane resin is formed by reacting an aromatic diisocyanate monomer and a polyol, an electrical steel sheet laminate using the same, and a method for manufacturing the same.
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公开(公告)号：EP4265409A1
公开(公告)日：2023-10-25
申请号：EP21911451.9
申请日：2021-12-20
申请人： POSCO Co., Ltd
发明人： PARK, Jong-Tae , KIM, Jungwoo , HA, Bongwoo , LEE, Donggyu
摘要： The present invention relates to a self-bonding electrical steel sheet and a laminate comprising same, the self-bonding electrical steel sheet comprising an electrical steel sheet and a self-bonding layer positioned on the electrical steel sheet, wherein the amount of inorganic material in the self-bonding layer is 5-35 wt% and the tensile/shear strength of the laminate is 7.5-20 N/mm 2 .
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公开(公告)号：EP4265408A1
公开(公告)日：2023-10-25
申请号：EP21911450.1
申请日：2021-12-20
申请人： POSCO Co., Ltd
发明人： KIM, Jungwoo , HA, Bongwoo , LEE, Donggyu , NO, Taeyoung , PARK, Gyeongryeol
摘要： The present invention relates to an electrical steel sheet laminate, and provided is an electrical steel sheet laminate comprising: a plurality of electrical steel sheets; and polymer adhesive layers positioned between the electrical steel sheets, wherein the coating thickness of the polymer adhesive layers is 1.8-5.4 µm, the space factor of the laminate is 95.8-98.5%, and the following mathematical formula 1 is satisfied. [Mathematical Formula 1] 172.4 ≤ space factor (%) × thickness (µm) ≤ 531. 172.4 ≤ space factor % × thickness μm ≤ 531
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4.发明公开
公开(公告)号：EP4455363A1
公开(公告)日：2024-10-30
申请号：EP22911905.2
申请日：2022-12-21
申请人： POSCO Co., Ltd
发明人： KIM, Jungwoo , HA, Bongwoo , LEE, Donggyu , NO, Taeyoung
摘要： An insulation coating composition for an electrical steel sheet according to an exemplary embodiment of the present disclosure contains, with respect to 100 parts by weight of a solid content, 30 to 60 parts by weight of an organic/inorganic composite in which inorganic nanoparticles are substituted in a resin, 15 to 45 parts by weight of a metal phosphate, 10 to 40 parts by weight of kaolin, 1 to 10 parts by weight of an inorganic dispersant, and 0.1 to 5 parts by weight of a carbon structure.
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公开(公告)号：EP4269515A1
公开(公告)日：2023-11-01
申请号：EP21911405.5
申请日：2021-12-16
申请人： POSCO Co., Ltd
发明人： HA, Bongwoo , KIM, Jungwoo , SEO, Kang , KANG, Daegyu , NO, Taeyoung , LEE, Donggyu , PARK, Gyeongryeol
IPC分类号： C09D175/04 , B05D7/14 , C09D7/40 , B32B37/12 , B32B15/01 , C09J175/04 , C09J5/06
摘要： The present invention relates to an electrical steel sheet and a laminate thereof, and provided is an electrical steel sheet including: an electrical steel sheet; and a polyurethane coating layer positioned on the electrical steel sheet, in which the rebound elastic modulus of the polyurethane coating layer is 5% to 30%.
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公开(公告)号：EP4266560A1
公开(公告)日：2023-10-25
申请号：EP21911425.3
申请日：2021-12-17
申请人： POSCO Co., Ltd
发明人： KIM, Jungwoo , HA, Bongwoo , LEE, Donggyu , NO, Taeyoung , PARK, Gyeongryeol
IPC分类号： H02K15/02 , H02K15/12 , H01F27/245 , H01F41/02
摘要： The present disclosure relates to a method for manufacturing an electrical steel sheet laminate, the method comprising the steps of: preparing an electrical steel sheet strip including an adhesive layer; coating the strip with a fusion accelerator including a silane coupling agent, a curing agent, and a solvent; fabricating metal parts from the strip; and laminating the metal parts and attaching same to each other by compression.
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公开(公告)号：EP4450583A1
公开(公告)日：2024-10-23
申请号：EP22908027.0
申请日：2022-12-16
申请人： POSCO Co., Ltd
发明人： HA, Bongwoo , KIM, Jungwoo , NO, Taeyoung , LEE, Donggyu
IPC分类号： C09J175/04 , C09J11/04 , C08G18/76 , B32B7/12 , B32B15/01
摘要： The present disclosure provides an electrical steel sheet adhesive coating composition containing a polyurethane resin and an inorganic pigment, wherein the inorganic pigment is contained in an amount of 20 to 150 parts by weight with respect to 100 parts by weight of the polyurethane resin, and the polyurethane resin is formed by reacting an aromatic diisocyanate monomer and a polyol, an electrical steel sheet laminate using the same, and a method for manufacturing the same.
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8.发明公开
公开(公告)号：EP4265702A1
公开(公告)日：2023-10-25
申请号：EP21911399.0
申请日：2021-12-16
申请人： POSCO Co., Ltd
发明人： HA, Bongwoo , KIM, Jungwoo , LEE, Donggyu , KO, Eunjung , NO, Taeyoung , PARK, Gyeongryeol
IPC分类号： C09J175/04 , C09J11/06 , C08K5/544 , B32B15/01 , B32B37/12
摘要： The present disclosure relates to a bonding composition for an electrical steel sheet, and a steel sheet and a laminate employing same, wherein the bonding composition for an electrical steel sheet may comprise an adhesive resin and a bonding additive, the adhesive resin may be polyurethane, and the bonding additive may comprise a coupling agent including an amino silane.
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公开(公告)号：EP4265698A1
公开(公告)日：2023-10-25
申请号：EP21911418.8
申请日：2021-12-17
申请人： POSCO Co., Ltd
发明人： LEE, Donggyu , KIM, Jungwoo , HA, Bongwoo , NO, Taeyoung , PARK, Gyeongryeol
IPC分类号： C09J7/50 , C09J7/28 , C09J175/04 , C09J11/00 , C09J5/06 , C08K5/5415 , C09D1/00 , B32B15/01 , B32B37/12
摘要： The present invention relates to: an electrical steel sheet including: an electrical steel sheet; and a bonding coating layer positioned on the electrical steel sheet, and further including: a first interface layer positioned in the electrical steel sheet and brought into contact with the bonding coating layer; and a second interface layer positioned in the bonding coating layer and brought into contact with the first interface layer, in which 70 mol% or more of total Si content in the bonding coating layer including the second interface layer is present in the second interface layer.
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10.发明公开
公开(公告)号：EP4450678A1
公开(公告)日：2024-10-23
申请号：EP22908028.8
申请日：2022-12-16
申请人： POSCO Co., Ltd
发明人： KIM, Jungwoo , HA, Bongwoo , LEE, Donggyu , NO, Taeyoung
摘要： An insulating coating composition for an electrical steel sheet, according to an embodiment of the present invention, comprises, on the basis of 100 wt% of a total composition: 10 to 50 wt% of a first composition including first inorganic material particles and second inorganic material particles; 10 to 50 wt% of a second composition including a metal phosphate; and 20 to 60 wt% of an organic/inorganic composite in which inorganic nano particles are substituted in an organic resin.
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