✦ LIBER ✦

Photo-oxidation of phenoxy resin

✍ Scribed by P. G. Kelleher; B. D. Gesner

Publisher: John Wiley and Sons
Year: 1969
Tongue: English
Weight: 314 KB
Volume: 13
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1969.070130102

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✦ Synopsis

A study has been made of the photolysis and photo-oxidation of phenoxy resin. Photolysis results in the evolution of hydrogen, methane, ethane, propene, propane, toluene, and the oxides of carbon. Also o b s e ~e d are increased yellowing, a rapid rise in gel content, and a decrease in intrinsic viscosity and elongation. Photooxidation causes similar changes, but produces oxidwed chain fragments, more gel, and less yellowing as well as broad absorptions in the hydroxyl and carbonyl regions of the infrared spectrum. A fret+radical mechanism is proposed in which both chain scission and crosslinking occur.

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