✦ LIBER ✦

Studies on the formation and characterization of poly(trimethylene 2,6-naphthalenedicarboxylate)

✍ Scribed by U. Stier; W. Oppermann

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 189 KB
Volume: 39
Category: Article
ISSN: 0887-624X
DOI: 10.1002/1099-0518(20010301)39:5<620::aid-pola1033>3.0.co;2-5

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✦ Synopsis

Bis-(3-hydroxypropyl)

2,6-naphthalenedicarboxylate (BHPN) was polymerized to poly(trimethylene 2,6-naphthalenedicarboxylate) (PTN) in the presence of various catalysts. The order of the catalytic reactivity was Sb(III) Ͻ Zr(IV) Ͻ Sn(IV) Ͻ Ti(IV). The influence of temperature and catalyst concentration on the properties of PTN was studied with Ti(IV)butylate as a catalyst. The catalysis with titanium resulted in a yellowish polymer only if the polycondensation temperature exceeded 260 °C. PTN and its monomer BHPN were characterized by infrared spectroscopy. 1 H NMR spectroscopy was employed to determine the quantity of bis-(3-hydroxypropyl)ether in PTN. The content of diolether was less than 1 mol %.

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