STUDY ON RADICAL TELOMERIZATION OF ESTERS OF METHACRYLIC-ACID USING BROMOTRICHLOROMETHANE AND CHARACTERISTICS OF THE RESULTING TELOMERS .6. DIFUNCTIONAL METHACRYLATES

The radical telomerization of vinyl (VMA) and allyl (AMA) methacrylates was carried out using bromotrichloromethane (BTCM) as a telogen at 50, 70, and 90 degree C. The m left bracket Cl//3CBr right bracket :n left bracket Monomer right bracket adducts were fractionated by means of silica gel column chromatography. Compared with VMA, AMA was subject to addition of BTCM and telomerized with a lower average degree of telomerization. The addition of BTCM occurred on both the vinylidene and vinyl groups, but the vinylidene group was much more susceptible to addition of BTCM in preference of the vinyl group.