Preparation and properties of poly(amide
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Sheng-Huei Hsiao; Chin-Ping Yang; Feng-Yueh Wu
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Article
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1994
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John Wiley and Sons
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English
โ 611 KB
## Abstract Four dicarboxylic acids containing one preformed imide ring were prepared by condensation of trimellitic anhydride with ฮฑโamino acids such as glycine, DLโalanine, DLโvaline, and DLโlcucinc. These diacids were subsequently directly polycondensated with various aromatic diamines using tri