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The free radical copolymerisation of itaconic anhydride and methyl me- thacrylate in solution was studied at 60 °C. The copolymer composition was deter- mined by 1 H-NMR spectroscopy and the obtained monomer reactivity ratios were calculated, rITA = 1.35±0.11; rMMA = 0.22±0.22 (by the Fineman-Ross method) and rITA = 1.27±0.38; rMMA = 0.10±0.05 (by the Mayo-Lewis method). The syn- thesised copolymers were modified by reaction with di-n-butyl amine. The copoly- mer composition after amidation was determined by elemental analysis via the ni- trogen content. Amidation of the anhydride units in the copolymers with di-n-butyl amine resulted in complete conversion to itaconamic acid.

Preparation and modification of itaconic anhydride-methyl methacrylate copolymers