POLYIMIDE PRECURSOR RESIN COMPOSITION AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:US20240101761A1

    公开(公告)日:2024-03-28

    申请号:US18271758

    申请日:2022-01-12

    Abstract: The purpose of the present disclosure is to provide a method for manufacturing a polyimide (PI) precursor resin composition that has excellent resolution performance, a broad range of available exposure and good handling properties. Provided is a method for manufacturing a PI precursor resin composition that comprises a PI precursor resin, an exposure light absorber, a photopolymerization initiator and a solvent. The PI precursor resin is selected from among materials having an absorbance parameter Xp for a light species within a range of 0.001-0.20, the exposure light absorber is selected from among materials having an absorbance parameter Xt for the light species within a range of 0.01-0.05, and the photopolymerization initiator is selected from among materials having an absorbance parameter Xr for the light species within a range of 0-0.04. On the basis of an assumed thickness D of a film that is formed by applying the PI precursor resin composition and desolventing, the addition amount (parts by mass) α of the exposure light absorber and the addition amount (parts by mass) β of the photopolymerization initiator are determined so as to satisfy the formula: 0.7≤(Xp+Xt×α+Xr×β)×D≤2.2.

    LITHOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD OF USE

    公开(公告)号:US20240069439A1

    公开(公告)日:2024-02-29

    申请号:US18180897

    申请日:2023-03-09

    CPC classification number: G03F7/031 B41C1/1008 G03F7/0045 B41C2210/04

    Abstract: IR-sensitive lithographic printing plate precursors provide a stable printout using a unique IR-sensitive image-recording layer. The IR radiation-sensitive layer includes: component (1) a free radical initiator composition; component (2) a free radically polymerizable composition; and component (3) a color-changing compound of Structure (I) having an indene structure in the conjugated chain between the aromatic terminal groups. A specific group, such as a halo group, is directly or indirectly attached to this indene structure. The infrared radiation-sensitive image-recording composition and layer also contains one or more borate ions. After infrared imaging, these precursors exhibit desirable fresh or initial printout and printout after dark storage. The precursors can be developed on-press.

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