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- W2054792282 abstract "A series of poly(o-hydroxyamide)s having high molecular weights were synthesized by means of low-temperature solution polycondensation of 4,4′-[isopropylidenebis(1,4-phenylene)dioxy]dibenzoyl chloride (1) and 4,4′-[hexafluoroisopropylidenebis(1,4-phenylene)dioxy]dibenzoyl chloride (2) with three bis(o-aminophenol)s. Subsequent thermal cyclodehydration of the poly(o-hydroxyamide)s afforded polybenzoxazoles. All poly(o-hydroxyamide)s are readily soluble in a variety of solvents, whereas the polybenzoxazoles are insoluble with one exception. The polybenzoxazoles exhibit glass transition temperatures in the range of 218–231°C and are stable up to 500°C in air or nitrogen, with the 10% weight loss temperatures being recorded between 553–607°C in nitrogen." @default.
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- W2054792282 date "1998-07-01" @default.
- W2054792282 modified "2023-09-24" @default.
- W2054792282 title "Aromatic polybenzoxazoles bearing ether and isopropylidene or hexafluoroisopropylidene units in the main chain" @default.
- W2054792282 doi "https://doi.org/10.1002/(sici)1521-3935(19980701)199:7<1247::aid-macp1247>3.0.co;2-y" @default.
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