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Über den thermischen Abbau des Polypivalolactons in cyclische Oligomere

✍ Scribed by Lüderwald, Ingo ;Sauer, Werner

Publisher
Wiley (John Wiley & Sons)
Year
1981
Weight
247 KB
Volume
182
Category
Article
ISSN
0025-116X

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✦ Synopsis

Abstract

Pyrolysis‐mass spectra have indicated that polypivalolactone degrades thermally into cyclic oligomers. To confirm this degradation behaviour polypivalolactone was pyrolyzed in a glass apparatus and the degradation products trapped at 0°C. After separation by preparative gel chromatography the isolated fractions could be identified as cyclic trimers to undecamers of pivalolactone and characterized by independent analytical methods. With the exception of the cyclic heptamer all odd oligomers have a lower melting point and enthalpy than the next bigger and smaller even cyclics.

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