Telomerization of styrene with bromotrichloromethane

The photo-initiated reactions between styrene and bromotrichloromethane have been studied at 30. The analysis of the telomer products by gel permeation chromatography has been refined since the previously published work; the relative proportions of several smaller telomers have been estimated. The results show a considerable increase in the magnitude of the transfer constant over the first few propagation steps of the reaction, with a limiting value after the incorporation of three monomer units into the growing polymer radical.