FIELD: organic chemistry. SUBSTANCE: copolyimides of the formula I where R1 and R2 - combination of two residues from the order involving , , at n:m = (20-80):(20-80) with molecular mass (40-60)·103. EFFECT: enhanced quality of film material. 2 tbl
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Authors
Dates
1995-05-10—Published
1991-03-07—Filed