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Phosphorus-containing mixed polyamides based on carboxyl derivatives of phosphinic acid

โœ Scribed by I.M. Magdeyev; I.M. Shermergorn; V.A. Byl'ev; V.I. Kovalenko; M.Sh. Yagfarov; T.A. Yagfarova


Book ID
118359413
Publisher
Elsevier Science
Year
1971
Weight
492 KB
Volume
13
Category
Article
ISSN
0032-3950

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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