Polyimides of different structures were synthesized by reaction of 1,4phenylene diisocyanate (PPDI) and 1,5-naphthalene diisocyanate (NDI) with pyromellitic dianhydride (PMDA) and 3,3Π,4,4Π-benzophenonetetracarboxylic dianhydride (BTDA). Polyamide-imides were also prepared by reaction of PPDI and ND
Preparation and properties of polyamides, polyimides, and polyamide-imides containing 1,3,4-thiadiazole moieties
β Scribed by Yasuo Saegusa; Takuya Niwa; Shigeo Nakamura
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1985
- Tongue
- English
- Weight
- 338 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0887-6258
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## SYNOPSIS 1,3-Diaminoadamantane (I) was used as a monomer with various aromatic dicarboxylic acyl chlorides and dianhydrides to synthesize polyamides and polyimides, respectively. Polyamides having inherent viscosities of 0.10-0.27 dL/g were prepared by low-temperature solution polycondensation.
Mixed aromatic/alicyclic polyimides were prepared by polycondensation reactions of trans-1,4-cyclohexane diisocyanate (CHDI) with pyromellitic dianhydride (PMDA), benzophenonetetracarboxylic dianhydrid (BTDA), and hexafluoroisopropylidene diphthalic anhydride (6FDA). Also, polycondensation of CHDI w
Phosphorus-containing polyamide-imides were prepared from N,N'-bis(4-carboxyphthalimido)-3,Y-diphenylalkylphosphine oxide and aromatic diacetamido derivatives by acidolysis; the reaction conditions are discussed. The resulting polymers were fairly soluble in DMA, DMF and conc. H2SO4; the reduced vis