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- W2020982816 abstract "Two novel heterocylic diamine monomers: l,2-dihydro-2-(4-aminophenyl)-4-4-(4-aminophenoxy) phenyl]-(2H)-phthalazin-l-one and 1,2-Dihydro-2-( 4-aminophenyl )-4-[4-(4-aminophenoxy-3, 5-dimethylphenyl]-(2H)-phthalazin-1-one were successfully synthesized using readily available heterocyclic bisphenol-like monomers through two steps in high yield. A series of novel poly(aryl ether amide)s containing the phthalazinone moiety with inherent viscosities of 1.16–1.67 dL/g were prepared by the direct polymerization of the novel diamines and aromatic dicarboxylic acids using triphenyl phosphite and pyridine as condensing agents. The polymers were readily soluble in a variety of solvents such as N,N -dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), dimethylsulfoxide ( DMSO ), N-methyl-2-pyrrolidinone (NMP), and pyridine. The polymers had high glass transition temperatures ( Tg) in the 291–329°C range." @default.
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- W2020982816 date "2010-08-27" @default.
- W2020982816 modified "2023-10-18" @default.
- W2020982816 title "Synthesis of novel poly(aryl ether amide)s containing the phthalazinone moiety" @default.
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- W2020982816 doi "https://doi.org/10.1002/cjoc.20000180329" @default.
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