| 摘要 |
<p>Amino-tetraalkylbenzoylphthalic acids are intermediates for preparing homopolyimides and copolyimides which contain structural elements of the formula I <IMAGE> (I) in which R1 and R2 are halogen, nitro, aryl, aryloxy, alkyl or alkoxy, m is 0 or a number from 1 to 4, n is 0 or a number from 1 to 3 and p is 0, 1 or 2, the free carbonyl groups are bonded in the ortho-position relative to one another and R is a divalent aromatic radical which is substituted by at least one alkyl group or aralkyl group, are autophotocrosslinkable. They are suitable for the production of protective films and photographic relief images.</p> |
