Preparation of Poly (oxytetramethylene) -Aramid Block Copolymers by the Direct Polycondensation Method

Poly (oxytetramethylene) -aramid block copolymers 5 having inherent viscosities of 0.2-0.5dl/g were prepared by the direct polycondensation reaction using triphenyl phosphite and pyridine as condensing reagents from amine-terminated poly (oxytetramethylene) 4 and carboxyl-terminated aromatic polyami...

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Bibliographic Details
Published in:KOBUNSHI RONBUNSHU 1988/02/25, Vol.45(2), pp.185-188
Main Authors: KAKIMOTO, Masa-aki, NISHIKATA, Yasunari, IMAI, Yoshio
Format: Article
Language:eng ; jpn
Subjects:
Direct Polycondensation
Polyether-Aramid Block Copolymers
Solubility
Thermal Behavior
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Summary:Poly (oxytetramethylene) -aramid block copolymers 5 having inherent viscosities of 0.2-0.5dl/g were prepared by the direct polycondensation reaction using triphenyl phosphite and pyridine as condensing reagents from amine-terminated poly (oxytetramethylene) 4 and carboxyl-terminated aromatic polyamides (aramids) 3, which were prepared directly from 3, 4′-oxydianiline and a calculated excess of isophthalic acid. Block copolymers 5 were soluble in amide type solvents that were good solvents for aramids. Thermogravimetry curves of the polymers indicated that 5 decomposed in two steps, and the decomposition curves were between, those of 3 and 4.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.45.185