Soluble aromatic polyamides containing phthalazinone moieties were prepared. Those polymers were obtained from the solution polymerization of a new diacid containing phthalazinone moieties with various diamines. The ...Soluble aromatic polyamides containing phthalazinone moieties were prepared. Those polymers were obtained from the solution polymerization of a new diacid containing phthalazinone moieties with various diamines. The new monomer, 2-(4-carboxyphenyl)-4-(4- carboxyphenoxy ) phenyl-1 (2H) phthalazinone (Ⅳ) was synthesized in a two-step reaction sequence. 2- (4-Cyanophenyl)-4-(4-cyanophenoxy)phenyl-1 (2H)phthalazinone (Ⅲ) was prepared via the condensation reaction of 4-(4-hydroxyphenyl )-1 (2H) phthalazinone (I) with p-chlorobenzonitrile (Ⅱ). After (Ⅲ) was hydrolyzed, (Ⅳ) was acquired. The synthesized polyamides were characterized by means of viscosimetry, DSC, FT-IR, ~1H NMR and EA. The polyamides have a high glass transition temperature which can be as high as 316 C. The polyamides also have good solubilities in some organic solvents.展开更多
基金the National Natural Science Foundation of China
文摘Soluble aromatic polyamides containing phthalazinone moieties were prepared. Those polymers were obtained from the solution polymerization of a new diacid containing phthalazinone moieties with various diamines. The new monomer, 2-(4-carboxyphenyl)-4-(4- carboxyphenoxy ) phenyl-1 (2H) phthalazinone (Ⅳ) was synthesized in a two-step reaction sequence. 2- (4-Cyanophenyl)-4-(4-cyanophenoxy)phenyl-1 (2H)phthalazinone (Ⅲ) was prepared via the condensation reaction of 4-(4-hydroxyphenyl )-1 (2H) phthalazinone (I) with p-chlorobenzonitrile (Ⅱ). After (Ⅲ) was hydrolyzed, (Ⅳ) was acquired. The synthesized polyamides were characterized by means of viscosimetry, DSC, FT-IR, ~1H NMR and EA. The polyamides have a high glass transition temperature which can be as high as 316 C. The polyamides also have good solubilities in some organic solvents.
