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6657380 
Journal Article 
Polymerization of methyl methacrylate and styrene in the presence of phthalides 
Puzin, YI; Egorov, AE; Khatchenko, EA; Kirillov, GA; Kudashev, RK; Kraikin, VA; , 
2000 
1 
Polymer Science Series A
ISSN: 0965-545X
EISSN: 1555-6107 
INTERPERIODICA 
BIRMINGHAM 
42 
9 
953-962 
Russian 
WOS:000089614900001 
The free-radical polymerization of methyl methacrylate and styrene in the presence of phthalides of varying structure was studied. It was shown that the halogen-containing phthalides act as the chain-transfer agents; the rate constants of chain transfer to these compounds were determined, It was demonstrated that the presence of chlorine atoms directly linked to the carbon of a phthalide cycle leads to an appreciable increase in the rate constant of chain transfer. It was found that phthalides containing mobile hydrogens can be involved in the reactions of chain transfer and formation of initiating species with initiator. The mechanism for the participation of phthalides in the polymerization process is discussed. It was established that the PMMA blocks fluoresce, some of them phosphoresce in the visible spectral range upon UV irradiation, and PMMA solutions in the concentrated sulfuric acid are intensively colored.