Appeal No. 1999-1066
Application No. 08/756,440
(b) a silicon-containing polyamic acid ester obtained by esterifying the
precursor (a) with a monovalent saturated alcohol having 1 to 7 carbon atoms,
and
(c) a partially esterified silicon-containing polyamic acid ester obtained by
partially esterifying the precursor (a) with the monovalent saturated alcohol
having 1 to 7 carbon atoms,
wherein the tetracarboxylic dianhydride is represented by the formula
(4)
2
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