Copolymer of poly(parabanic acid) and polyimide
✍ Scribed by Georgeta Caraculacu; Elena Scortanu; Adrian A. Caraculacu
- Book ID
- 105334301
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1983
- Tongue
- English
- Weight
- 103 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0887-6258
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## Abstract Poly(dimer acid–brassylic acid) [P(DA–BA)] copolymers and poly(dimer acid–pentadecandioic acid) [P(DA–PA)] copolymers were prepared by melt polycondensation of the corresponding mixed anhydride prepolymers. The copolymers were characterized by Fourier transform infrared (FTIR), gel perm
## Abstract The influence of initial molar ratio of reagents, amount of catalyst, and temperature of reaction between parabanic acid and ethylene carbonate on structure of product was studied. The reaction led to the opening of the trioxoimidazolidine ring, resulting in formation of thermally resis