Synthesis and properties of polybenzimidazoles containing aliphatic units in the main chain
β Scribed by N.A. Adrova; M.M. Koton; A.M. Dubnova; Ye.M. Moskvina; Ye.I. Pokrovskii; Ye.F. Fedorova
- Book ID
- 118357003
- Publisher
- Elsevier Science
- Year
- 1965
- Weight
- 138 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0032-3950
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## Abstract Two new polyimides (ODAβPI and HDAβPI) having 1,4βphenylenediethynylene unit and octyloxy groups were synthesized. Judging from inherent viscosities of their precursor PAAs (1.42 and 1.62 dLβΒ·βg^β1^), the two PIs were very high in molecular weight. Casting and thermal imidization of PAA
## Abstract Summary: Copolymerizations of ethylene and disubstituted diallylsilanes (CH~2~ο£ΎCHο£ΏCH~2~ο£Ώ)~2~R~2~Si (Rβ=βCH~3~, C~6~H~5~) have been investigated with various zirconocene catalysts using methylaluminoxane as a cocatalyst. The bridged stereospecific catalysts showed a higher reactivity for