POLYIMIDE FILM, AND METHOD FOR PRODUCTION THEREOF
First Claim
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1. A polyimide film prepared from an aromatic tetracarboxylic acid component comprising 3,3′
- ,4,4′
-biphenyltetracarboxylic dianhydride as a main component and an aromatic diamine component comprising p-phenylenediamine as a main component;
whereinthe aromatic diamine component comprises not less than 3 mol % but less than 35 mol % of 2,4-toluenediamine based on the total molar quantity of the aromatic diamine component.
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Abstract
Disclosed is a polyimide film prepared from an aromatic tetracarboxylic acid component consisting essentially of 3,3′,4,4′-biphenyltetracarboxylic dianhydride and an aromatic diamine component consisting essentially of not less than 65 mol phenylenediamine % but less than 97 mol % of p-phenylenediamine and not less than 3 mol % but less than 35 mol % of 2,4-toluenediamine.
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9 Claims
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1. A polyimide film prepared from an aromatic tetracarboxylic acid component comprising 3,3′
- ,4,4′
-biphenyltetracarboxylic dianhydride as a main component and an aromatic diamine component comprising p-phenylenediamine as a main component;
whereinthe aromatic diamine component comprises not less than 3 mol % but less than 35 mol % of 2,4-toluenediamine based on the total molar quantity of the aromatic diamine component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- ,4,4′
Specification