Castor-acrylated monomer H-1- and C-13-nuclear magnetic resonance spectralassignments

Castor-acrylated monomer (CAM) NMR spectral assignments were made utilizing one- and two-dimensional NMR techniques. The unique structure of CAM resul ted in several novel chemical environments which were observed in the NMR s pectra. Previously published vegetable oil and fatty acid ester NMR peak as signments were insufficient for complete identification of NMR peaks. Defin itive peak assignments, particularly in the alkyl and alkene regions, are r equired for evaluation of CAM as a specialty comonomer in the synthesis of latex polymers for use as waterborne-coating binders. The NMR peak assignme nts for CAM will allow the subsequent evaluation of the copolymerizability of CAM as well as the determination as to whether unsaturation is preserved during latex polymer synthesis. H-1- and C-13-NMR spectra of CAM are provi ded with supporting evidence for the peak assignments and discussion of the ir relevance. (C) 2001 John Wiley & Sons, Inc.