Two flexible dicarboxylic acid monomers, 4,4-[isopropylidenebis(1,4-phenylene)dioxy]dibenzoic acid (1) and 4,4-[hexafluoroisopropylidenebis(1,4-phenylene)dioxy]dibenzoic acid ( 3), were synthesized from readily available compounds in two steps in high yields. High molecular-weight polyhydrazides and
Novel poly(amide-hydrazide)s and copoly(amide-hydrazide)s from bis-(4-aminobenzyl) hydrazide and aromatic diacid chlorides: Synthesis and characterization
β Scribed by M. Medhi; A. S. Patil; M. R. Halhalli; A. Choubey; P. P. Wadgaonkar; N. N. Maldar
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 364 KB
- Volume
- 116
- Category
- Article
- ISSN
- 0021-8995
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4,4Π-(1,4-Phenylenedioxy)dibenzoic acid as well as the 2-methyl-, 2-tertbutyl-, or 2-phenyl-substituted derivatives of this dicarboxylic acid were synthesized in two main steps from p-fluorobenzonitrile and hydroquinone or its methyl-, tert-butyl-, or phenyl-substituted derivatives. Polyhydrazides a
A series of new poly(imide-hydrazide)s and poly(amide-imide-hydrazide)s were obtained by the direct polycondensation of N-[p-(or m-)carboxyphenyl]trimellitimide (p-or m-CPTMI) with terephthalic dihydrazide (TPH), isophthalic dihydrazide (IPH), and p-aminobenzhydrazide (p-ABH) by means of diphenyl ph