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公开(公告)号：US11680138B2
公开(公告)日：2023-06-20
申请号：US17114988
申请日：2020-12-08
发明人： Kuan-Wei Lee , Szu-Hsiang Su , Shou-Jui Hsiang , Pei-Jung Wu , Wei-Hsin Huang
CPC分类号： C08G69/265 , C08G69/32 , C08J3/096 , C08J3/11 , C08J5/18 , C08L67/03 , C08K2201/005 , C08L2201/56 , C08L2203/16 , C08L2203/20 , C08L2205/12 , C08L2312/00
摘要： A polymer dispersion is disclosed. The polymer dispersion includes a liquid crystal polymer powder, a polyamide acid, and a solvent. A solid content of the polymer dispersion includes the liquid crystal polymer powder and the polyamide acid. The liquid crystal polymer powder has a mass ratio of 20% to 30% in the solid content. The polyamide acid has a mass ratio of 70% to 80% in the solid content. The polyamide acid is obtained by mixing two kinds of diamines and two kinds of dianhydrides together, causing the diamines and the dianhydrides to be polymerized with each other. Both two kinds of diamines and two kinds of dianhydrides comprise a liquid crystal structure and a flexible structure respectively. A method of preparing the polymer dispersion, and a method for preparing a polymer composite film using the polymer dispersion are also disclosed.
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公开(公告)号：US11524491B2
公开(公告)日：2022-12-13
申请号：US17107787
申请日：2020-11-30
发明人： Wei-Hsin Huang , Chi-Fei Huang , Szu-Hsiang Su , Shou-Jui Hsiang , Kuan-Wei Lee
IPC分类号： B32B27/28 , B29C53/56 , B32B37/02 , B29C53/00 , B29C53/16 , B32B38/10 , B32B38/00 , B32B37/20 , B29K105/00 , C08G73/10 , B29K79/00 , C08G69/32
摘要： A method for manufacturing a thick polyimide film includes providing a first and second laminated structures. The first and second laminated structures are heated, and the heated first and second laminated structures are wound together to form a third laminated structure. The first polyamic acid gel film of the heated first laminated structure and the second polyamic acid gel film of the heated second laminated structure are overlapped and bonded together to form a third polyamic acid gel film. Two third laminated structures are wound together to form a fourth polyamic acid gel film. A dehydration ring-closure imidization reaction is applied to the fourth polyamic acid gel film by heating to obtain the thick polyimide film. A thick polyimide film manufactured by the method is also disclosed.
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公开(公告)号：US11859038B2
公开(公告)日：2024-01-02
申请号：US16936204
申请日：2020-07-22
发明人： Kuan-Wei Lee , Szu-Hsiang Su , Shou-Jui Hsiang , Pei-Jung Wu , Wei-Hsin Huang
IPC分类号： C08J5/18 , C08F293/00
CPC分类号： C08F293/00 , C08J5/18 , C08J2377/06
摘要： A block copolymer of polyamide acid includes a first polyamide acid and a second polyamide acid alternately connected. The first polyamide acid is made by first dianhydride monomers and second diamine monomers. The second polyamide acid is made by second dianhydride monomers and first diamine monomers. Each first dianhydride monomer is
or comprises a liquid crystal structure. Each second dianhydride monomer and each second diamine monomer respectively include a first flexible structure. Each first diamine monomer includes a liquid crystal structure. Each liquid crystal structure includes a cyclic group selected from a chemical structural formula of
and intermediate groups selected from a chemical structural formula of
Each flexible structure includes a group selected from a group consist of ether bond, ketone group, sulphone group, aliphatic hydrocarbon group, and any combination thereof.-
公开(公告)号：US11655366B2
公开(公告)日：2023-05-23
申请号：US17110950
申请日：2020-12-03
发明人： Kuan-Wei Lee , Pei-Jung Wu , Szu-Hsiang Su , Shou-Jui Hsiang
CPC分类号： C08L79/08 , C08G69/32 , C08G73/1028 , C08K5/101 , C08K5/20 , C08K5/3415 , C08L2201/08 , C08L2201/10 , C08L2203/16 , C08L2203/20
摘要： A transparent polyimide mixture is disclosed. The transparent polyimide mixture includes a transparent polyimide, an additive, and a solvent. A molecular chain of the transparent polyimide includes an active hydrogen atom. The additive includes a carbodiimide group. An equivalent ratio of the active hydrogen atom and the carbodiimide group is in a range of 1:0.8 to 1:1.2. A method for preparing the transparent polyimide mixture, a transparent polyimide film, and a method for preparing a transparent polyimide film are also disclosed.
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