3.
    发明专利
    失效

    公开(公告)号:JPH062828B2

    公开(公告)日:1994-01-12

    申请号:JP11227786

    申请日:1986-05-15

    Applicant: UBE INDUSTRIES

    Abstract: A process for the production of a polyimide film having an increased adhesiveness which includes the steps of: evenly coating a surface treating solution which contains a heat-resistant surface treating agent of aminosilane type, epoxysilane type or titanate type in an amount not less than 0.5 wt. % on a surface of a solid film comprising an aromatic polymer composition which contains 100 parts by weight of an aromatic polyamioc acid and 5-150 parts by weight of an organic polar solvent and heating the solid film having the coated surface treating solution at a temperature of 100 DEG -600 DEG C., to imidize the polyamic acid constituting the solid film as well as to dry the film.

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