| Abstract: | Some new poly(ether-ester)s (PEEs) and poly(ether-amide)s (PEAs) with polyether sequences linked by tartrate units have been synthesized. Derivatives bearing residues from the synthetic plant-growth regulator 1-naphthylacetic acid (NAA) as pendent groups and end-groups have been prepared by esterification of PEEs and PEAs with NAA. Polymers bearing residues from pyridine-2, 6-dicarboxylic acid (a herbicide) in the main chain have been prepared. The hydrolysis has been found to depend on the structure of the polymer carrier, on pH of the medium and on the ability of the polymers to form complexes with polyacids. The phytosanitary activity of the new polymers has been related to the particular features of their hydrolysis behaviour. |
