POLYIMIDE COMPONENT, POLYIMIDE FILM, AND POLYIMIDE COPPER CLAD LAMINATE

    公开(公告)号:US20220002490A1

    公开(公告)日:2022-01-06

    申请号:US16990148

    申请日:2020-08-11

    Abstract: A polyimide component being transparent includes a dianhydride monomer and a diamine monomer. The dianhydride monomer has an asymmetric structure. The dianhydride monomer has at least one first polar group and at least one side chain group. The first polar group is an ester group. A molecular structural formula of the side chain group is: The diamine monomer has an asymmetric structure and at least one second polar group. The second polar group is at least one of a nitrogen heterocycle and an ether group. The polyimide component is polymerized by the dianhydride monomer and the diamine monomer. The disclosure also relates to a polyimide film and a polyimide copper clad laminate.

    THICK POLYIMIDE FILM AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:US20220152912A1

    公开(公告)日:2022-05-19

    申请号:US17107787

    申请日:2020-11-30

    Abstract: 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.

    DIAMINE MONOMER COMPOUND, METHOD FOR PREPARING THE SAME, RESIN, FLEXIBLE FILM, AND ELECTRONIC DEVICE

    公开(公告)号:US20230091989A1

    公开(公告)日:2023-03-23

    申请号:US17490119

    申请日:2021-09-30

    Abstract: A diamine monomer compound with reduced dielectric losses for better integrity and stability in digital transmissions is represented by a structural formula of wherein n1 is an integer greater than 1. A method for preparing the diamine monomer compound and a polyimide resin developed therefrom are disclosed. The diamine monomer compound introduces a long even numbered carbon chain and a liquid crystal unit structure, the long even numbered carbon chain giving flexibility, which reduces the regularity and rigidity of the molecular chain and facilitates film-forming processing. Dimensional stability is improved, and the coefficient of thermal expansion of the materials is reduced, the materials have good mechanical and heat-tolerant thermal properties, the loss factor and the coefficient of thermal expansion of the materials being reduced. A flexible film of the resin and an electronic device are also disclosed.

    POLYIMIDE FILM, BLOCK COPOLYMER OF POLYAMIDE ACID, AND METHOD FOR MANUFACTURING THE BLOCK COPOLYMER OF POLYAMIDE ACID

    公开(公告)号:US20210087319A1

    公开(公告)日:2021-03-25

    申请号:US16936204

    申请日:2020-07-22

    Abstract: 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.

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