Soluble, branched (methyl) methacrylate copolymers have been prepared via facile, one-step, batch solution free radical polymerizations taken to high conversion. Methyl methacrylate (MMA) or methacrylate has been copolymerized with the branching comonomer (BCM) using a trithiocarbonate (TTC) to inhibit gelation. The BCMs employed were tripropylene glycol diacrylate (TPGDA) and trihydroxymethylpropyl triacrylate (TMPTA). Soluble branched copolymers containing unreacted double bonds have been produced and characterized by H-1-NMR spectroscopy. These two brancher monomers have been shown to produce regularly branched material with the small molar mass distributions in the presence of TTC. The results of DSC and Mark-Houwink constant a analyses support the production of the branched architectures. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 112: 2486-2492, 2009