Characterization and Evaluation of Polymers Containing Herbicides as Pendent Side Chains.

摘要

The syntheses of five vinyl monomers containing fenac. These monomers were polymerized by bulk-and solution-free-radical techniques to afford the corresponding polymers. The results of these studies showed that only copolymers containing hydrophilic residues will undergo hydrolysis. Hence, a detailed study of the copolymerization of the monomers containing 2-4-dichlorophenoxyacetic acid with acrylic acid,methacrylic acid, N-vinyl-2-pyrrolidone,and trimethylamine methacrylimide was carried out. All of the resulting copolymers underwent hydrolysis in water with a pH of 8at 30 C. The rate of hydrolysis depended on the type and amount of the hydrophilic comonomer used. Samples of three copolymers of 2-acryloyloxyethyl 2-4-dichlorophenoxyacetate containing 5% methacrylic acid, 10% methacrylic acid,and 35% trimethylamine methacrylimide,respectively,were prepared for preliminary field testing. Fenac was also physically incorporated in polyethylene pellets to provide an additional formulation for field evaluation.