| 摘要 |
<p>A method of making an imide precursor composition comprises:… (a) mixing a lactam (component A) with a tetracarboxylic acid dianhydride component (component B) comprising at least 50 mole % of 1,2,3,4-butanetetra-carboxylic acid dianhydride in a mole ratio of A:B of from 0.1:1 to 10:1 to form an N, N-disubstituted bisimide dicarboxylic acid,… (b) dissolving the product of step (a) in an inert solvent, and… (c) mixing at least one aromatic diamine (component C) with the solution from step (b) to give a solution of an imide precursor which forms a polyimide on heating.</p> |
