Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 1999-06-01

Journal: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY

Included Journals: EI、SCIE、Scopus

Volume: 37

Issue: 11

Page Number: 1565-1567

ISSN: 0887-624X

Key Words: phthalazinone; diamine; polyamides; direct polycondensation

Abstract: The direct polycondensations of 1,2-dihydro-2-(4-aminophenyl)-4-[4-(4-aminophenoxyl) phenyl](2H)phthalazin-1-one with three aromatic diacids were carried out using Yamazaki phosphorylation method. The high molecular weight polyamides were obtained in quantitative yields. The polyamides exhibited high glass transition temperatures which were typically over 310 °C. The three polyamides were readily soluble in polar aprotic solvents such as N-methylpyrrolidone, N,N-dimethylformamide, dimethylacetamide, dimethyl sulfoxide, and pyridine.