✍ Scribed by C. Hamciuc; E. Hamciuc; M. Bruma; N.M. Belomoina
No coin nor oath required. For personal study only.
l?olybcnzoxazinones and poly(benzoxazinone-phenylquinoxaline)s containing pendant imide groups have been synthesized by cyclopolycondensation of diacid chlorides which contain preformed imide rings, with 3,3'-dicarboxy-4,4'-diaminodiphenyl-methane or with mixtures of the latter with a bis(amino-phenylquinoxaline).
The low temperature solution polycondensation technique afforded poly(amic-acid)s in the first step, which underwent thermal or chemical cyclodehydration, in the second step. The ,c:[clodehydration process of the poly(amic-acid)s has been studied by infrared, thermogravimetric and dlfierential scanning calorimetry analyses. The solubility, thermal stability and glass transition temperature of these polymers have been studied and compared with related heterocyclic polymers that have been previously reported.
📜 SIMILAR VOLUMES
The polymerization of bisphenol-A diphthalic anhydride with 2,3-bis(per¯uoroalkyl methyl)butane-1,4 diamine (NFD) led to a new series of ¯uorinated poly(ether imide)s. In the case of C 4 F 9 per¯uoroalkyl chain, polymers and copolymers obtained from a mixture of m-phenylenediamine and NFD were chara
A series of new poly(l,3,4-oxadiazole-amide)s containing pendent imide groups has been synthesized by solution polycondensation of aromatic diamines containing preformed 1,3,4-oxadiazole rings with two diacid chlorides containing imide rings. These polymers were also prepared by the reaction of the
## Abstract Two series of poly(ether imide)s (PEIs) containing fluorenyl cardo groups in the main chains were synthesized, which are derived from the polycondensation of 9,9′‐bis(4‐aminophenoxyphenyl)fluorene (BAOFL) or 9,9′‐bis(3‐trifluoromethyl,4‐aminophenoxyphenyl)fluorene (6F‐BAOFL) with four k