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- W2085191310 abstract "Abstract Two unsymmetrical and kink non‐coplanar heterocyclic diamines, 1,2‐dihydro‐2‐(4‐aminophenyl)‐4‐[4‐(4‐aminophenoxy)phenyl](2 H )phthalazin‐1‐one and 1,2‐dihydro‐2‐(4‐aminophenyl)‐4‐[4‐(4‐aminophenoxy)‐3,5‐dimethylphenyl](2 H ) phthalazin‐1‐one, were successfully synthesized by readily available heterocyclic bisphenol‐like monomers through two steps in high yields. A series of novel poly(arylene ether amides)s containing the phthalazinone moiety with inherent viscosities of 1.16–1.67 dL/g were prepared by the direct polymerization of 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, N,N ‐dimethylacctamide, dimethyl sulfoxide, N ‐methyl‐2‐pyrrolidone, and even in pyridine, chloroform and m ‐cresol. The glass‐transition temperatures were in the range of 291–329 °C, and the temperatures for 5% weight loss in nitrogen were above 490 °C. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 3489–3496, 2002" @default.
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- W2085191310 date "2002-08-30" @default.
- W2085191310 modified "2023-10-18" @default.
- W2085191310 title "Aromatic polyamides derived from unsymmetrical diamines containing the phthalazinone moiety" @default.
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- W2085191310 doi "https://doi.org/10.1002/pola.10426" @default.
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