Thermal Stability of 2,2-Diaryl/dialkyl-4,4,5,5-tetraaryl-1,3-dioxa-2-siloles

摘要

Fully substituted 1,3-dioxa-2-siloles contain a strained carbon-carbon bond that will undergo thermolysis at modest temperatures to generate a diradical capable of initiating vinyl polymerization. If the substituents contain flame-retarding moieties, e.g., halogen or phophorus-containing groups, the use of such compounds as initiators serves to incorporate a flame-retarding unit into the polymer mainchain. The thermal decomposition of several dioxasiloles has been examined using a variety of techniques, including thermogravimetry.