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1.发明申请公开(公告)号：US20220267527A1
公开(公告)日：2022-08-25
申请号：US17403011
申请日：2021-08-16
发明人： Kosuke NAKADA , Shigeru SEITOKU , Takeshi IWANAGA , Tomoyo OKUBO , Hajime SUGAHARA , Hidekazu HIROSE
摘要： A polyimide precursor solution contains: an aqueous solvent containing water; particles; and a polyimide precursor, wherein the polyimide precursor has a high molecular weight region A containing a high molecular weight side maximum value and a low molecular weight region B containing a low molecular weight side maximum value in an elution curve obtained by gel permeation chromatography, a weight average molecular weight in the high molecular weight region A is 50,000 or more, a weight average molecular weight in the low molecular weight region B is 10,000 or more and 30,000 or less, and a value of a/(a+b) is 0.60 or more and 0.98 or less in which a represents an area of the high molecular weight region A and b represents an area of the low molecular weight region B.
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2.发明申请公开(公告)号：US20220306895A1
公开(公告)日：2022-09-29
申请号：US17699991
申请日：2022-03-21
发明人： Shigeru SEITOKU , Kosaku YOSHIMURA , Hidekazu HIROSE , Hajime SUGAHARA , Kosuke NAKADA , Satoshi YOSHIDA
IPC分类号： C09D179/08 , C08G73/10 , C08J9/24 , C08J9/00
摘要： A polyimide precursor solution contains a polyimide precursor, particles, and a water-based solvent that contains an amine compound (A), an organic solvent (B) other than the amine compound (A) and amide compounds, and water, in which a boiling point of the organic solvent (B) is higher than a boiling point of the amine compound (A), and is 200° C. or higher and 300° C. or lower.
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公开(公告)号：US20240126186A1
公开(公告)日：2024-04-18
申请号：US18468996
申请日：2023-09-18
发明人： Kota NOHARA , Sakae TAKEUCHI , Yuka ZENITANI , Hajime SUGAHARA , Mai MOCHIDA , Mieko SEKI
CPC分类号： G03G9/09725 , G03G15/0216 , G03G15/0868 , G03G15/1605 , G03G15/2092 , G03G2215/066
摘要： A silica particle contains a nitrogen-containing compound, α/β is 0.30 or greater and 0.80 or less, where α and β are the BET specific surface areas of the silica particle before and after baking at 350° C., respectively, and the absolute ratio of the triboelectric series of the silica particle before baking at 350° C. to that of the silica particle after baking at 350° C. is 0.10 1or greater and 0.85 or less.
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公开(公告)号：US20240109781A1
公开(公告)日：2024-04-04
申请号：US18317091
申请日：2023-05-14
发明人： Hajime SUGAHARA , Sakae TAKEUCHI , Yuka ZENITANI , Mai MOCHIDA , Kota NOHARA , Mieko SEKI
IPC分类号： C01B33/18
CPC分类号： C01B33/18
摘要： A manufacturing method of silica particles includes coating of forming a coating structure composed of a reaction product of a trifunctional silane compound on a surface of silica base particles, attaching a nitrogen element-containing compound containing a molybdenum element to the coating structure in a reaction solution which contains water, an alcohol, silica particles having the coating structure composed of the reaction product of the trifunctional silane compound, the nitrogen element-containing compound containing the molybdenum element, and at least one compound selected from the group consisting of ammonia and an amine and in which a total amount of ammonia and an amine is 0.2% by mass or more and 4.5% by mass or less, and drying of removing the water and the alcohol from the reaction solution.
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5.发明申请公开(公告)号：US20210277291A1
公开(公告)日：2021-09-09
申请号：US17003947
申请日：2020-08-26
发明人： Yoshifumi IIDA , Sachiko NISHIOKA , Takashi HASEGAWA , Hajime SUGAHARA , Satomi KASHIWAGI , Yuka ZENITANI , Satoshi INOUE
IPC分类号： C09J125/06 , C09J133/10 , B41M7/00 , C09J133/02
摘要： A pressure sensitive adhesive particle includes a pressure sensitive adhesive base particle that contains a styrene resin containing styrene and a vinyl monomer other than styrene as polymerization components, and a (meth)acrylate resin containing at least two (meth)acrylates as polymerization components, in which a mass ratio of the (meth)acrylates relative to a total of polymerization components of the (meth)acrylate resin is 90 mass % or more; and an external additive. The pressure sensitive adhesive particle has a surface having an arithmetic average roughness Ra within a range of 0.005 μm to 0.100 μm. The pressure sensitive adhesive particle has at least two glass transition temperatures, and the difference between the lowest glass transition temperature and the highest glass transition temperature among the glass transition temperatures of the pressure sensitive adhesive particle is 30° C. or more.
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公开(公告)号：US20240118645A1
公开(公告)日：2024-04-11
申请号：US18469027
申请日：2023-09-18
发明人： Mai MOCHIDA , Sakae TAKEUCHI , Yuka ZENITANI , Hajime SUGAHARA , Mieko SEKI , Kota NOHARA
CPC分类号： G03G9/09725 , G03G15/0216 , G03G15/0868 , G03G15/1605 , G03G15/2092 , G03G2215/066
摘要： A silica particle is provided in which a pore size distribution curve obtained by nitrogen gas adsorption of the silica particle after baking at 350° C. has at least one peak at a pore diameter of 2 nm or less and at least one peak at a pore diameter of more than 2 nm and 50 nm or less, and D/B is 0.50 or greater and 2.50 or less, where D and B are the volumes of pores having a diameter of 2 nm or less and a diameter of 2 nm or more and 25 nm or less, respectively, determined from the pore size distribution curve obtained by nitrogen gas adsorption of the silica particle after baking at 350° C.
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公开(公告)号：US20240118644A1
公开(公告)日：2024-04-11
申请号：US18313353
申请日：2023-05-07
发明人： Mieko SEKI , Sakae TAKEUCHI , Yuka ZENITANI , Hajime SUGAHARA , Mai MOCHIDA , Kota NOHARA
CPC分类号： G03G9/09725 , G03G9/0819 , G03G9/0821 , G03G9/09716
摘要： Silica particles having silica base particles, a coating structure that coats the silica base particles and is composed of a reaction product of a trifunctional silane compound, and a nitrogen element-containing compound that has adhered to the coating structure and contains a molybdenum element, in which in a molybdenum element map created by SEM-EDX, a ratio of a total area of a region forming a lump having a long diameter of 500 nm or more is 5% or less to a total area of the molybdenum element.
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公开(公告)号：US20220298304A1
公开(公告)日：2022-09-22
申请号：US17381854
申请日：2021-07-21
摘要： A polyimide precursor solution contains a polyimide precursor having a weight average molecular weight of 40,000 or more, and an aqueous solvent containing a tertiary amine compound and water, in which a viscosity of the polyimide precursor solution after a storage at 25° C. for 14 days is 50% or more and 200% or less with respect to a viscosity of the polyimide precursor solution before the storage.
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公开(公告)号：US20220069413A1
公开(公告)日：2022-03-03
申请号：US17137876
申请日：2020-12-30
发明人： Kosuke NAKADA , Yasunobu KASHIMA , Kosaku YOSHIMURA , Tomoya SASAKI , Hajime SUGAHARA , Tomoyo OKUBO , Hidekazu HIROSE
IPC分类号： H01M50/423 , H01M50/429 , H01M50/403 , H01M50/46 , H01M50/491 , H01M50/494 , H01M50/449
摘要： A separator for a non-aqueous secondary battery includes: a polyimide porous film; and adhesive resin particles that are attached to a surface of the polyimide porous film and have a responsiveness to at least one of pressure and heat.
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公开(公告)号：US20220064379A1
公开(公告)日：2022-03-03
申请号：US17146436
申请日：2021-01-11
发明人： Hajime SUGAHARA , Hidekazu HIROSE , Kosaku YOSHIMURA , Tomoya SASAKI , Yasunobu KASHIMA , Kosuke NAKADA , Tomoyo OKUBO
摘要： A particle-dispersed polyimide precursor solution contains: a polyimide precursor consisting of a polymer of a tetracarboxylic dianhydride and a diamine containing a fluorene-based diamine having a fluorene skeleton; particles; and an aqueous solvent containing water.
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