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.

    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.

    POLYAMIC ACID COMPOSITION, POLYIMIDE FILM, AND COPPER CLAD LAMINATE

    公开(公告)号:US20210017336A1

    公开(公告)日:2021-01-21

    申请号:US16561401

    申请日:2019-09-05

    Abstract: A polyamic acid composition is polymerized by dianhydride monomers and diamine monomers. A range of molar ratio of the dianhydride monomers to the diamine monomers is from 0.9 to 1.1. The diamine monomers have a combination of specific functional groups containing at least one nitrogen heterocycle structure, at least one liquid crystal structure, and at least one soft structure, wherein the diamine monomer containing nitrogen heterocycle structure has a molar weight percentage of 3% to 8% of a total molar weight of the diamine monomers, and the diamine monomers containing at least one liquid crystal structure and at least one soft structure have a molar weight percentage of 92% to 97% of the total molar weight of the diamine monomers. The disclosure further relates to a polyimide film, a copper clad laminate, and a printed circuit board.

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