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Synthesis and some properties of vicinal bis(difluoramino)carboxylic acids

โœ Scribed by A. V. Fokin; V. A. Komarov; Kh. A. Rulina

Book ID
112437943
Publisher
Springer
Year
1976
Tongue
English
Weight
338 KB
Volume
25
Category
Article
ISSN
1573-9171

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## Abstract High molarโ€mass aromatic polyamides were obtained from 7,7'โ€bis(4โ€carboxyphenoxy)โ€4,4,4โ€ฒ,4โ€ฒโ€tetramethylโ€2,2โ€ฒโ€spirobichroman, a novel dicarboxylic acid monomer, by direct polycondensation reaction in __N__โ€methylโ€2โ€pyrrolidone (NMP) with various aromatic diamines, using triphenyl phosphi