Über die copolymerisation von acrylamid mit vinylestern der 2,4-dichlorphenoxyessigsäure und 2,4-dichlorphenoxybuttersäure

Copolymers with prolonged growth regulating activity for agriculture were prepared by the copolymerization of acrylamide with vinyl esters of 2,4-dichlorophenoxy acetic acid and 2,4-dichlorophenoxy butyric acid. Some kinetic relations were established. Reactivity ratios for the systems acrylamide-vinyl ester of phenoxyacetic acid (r₁ = 4,08 ± 0,08 and r₂ = 0,943 ± 0,16) and acrylamide-vinyl ester of 2,4-dichlorophenoxy butyric acid (r₁ = 1.50 ± 0,09 and r₂ = 1,02 ± 0,18) were determined. Conditions of preparing water soluble copolymers with good yield and sufficient high content of physiologically active units were established.