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Polymerization of cyclic monomers, 1. Radical polymerization of unsaturated spiro orthocarbonates

✍ Scribed by Norbert Moszner; Frank Zeuner; Volker Rheinberger


Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
312 KB
Volume
16
Category
Article
ISSN
1022-1336

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✦ Synopsis


Abstract

7‐Methyl‐2‐methylene‐ (1) and 7‐methyl‐2,3‐dimethylene‐1,4,6,9‐tetraoxaspiro[4.4]nonane (2) were synthesized and characterized by elemental analysis, IR, ^1^H NMR and ^13^C NMR spectroscopy. Radical polymerization of the spiro orthocarbonates (SOC) 1 and 2 show that they undergo primarily vinyl polymerization with a low degree of ring‐opening reaction. Homopolymerization of 2 at 120°C with di‐tert‐butyl peroxide gives a transparent crosslinked polymer and the polymerization generates a 12,5% shrinkage in volume.


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