Synthesis and evaluation of effectiveness of a controlled release preparation 2,4-d: a reduction of risk of pollution and exposure of workers
作者： Witold J. Kowalski , Iwona Romanowska , Marzena Smol , Andrzej Silowiecki , Mariola Głazek
DOI: 10.2478/V10265-012-0034-4
关键词: Active ingredient 、 Ring-opening polymerization 、 Aqueous solution 、 Nuclear chemistry 、 Size-exclusion chromatography 、 Acetic acid 、 Molar mass distribution 、 Controlled release 、 Butyric acid 、 Chemistry 、 Organic chemistry
摘要: 1 H-NMR, ESI-MS characterization of oligomers, assessment the herbicide effectiveness. Abstract: A novel herbicidal controlled release formulation composed (2,4-dichlorophenoxy) acetic acid (2,4-D) chemically bonded to biodegradable (R,S)-3-hydroxybutyric oligomers was investigated. The synthesis (R,S)-3-hydroxy butyric carried out via ring opening polymerization β-butyrolactone initiated by 2,4-dichlorophenoxy potassium salt in presence complexing agents. formed were characterized size exclusion chromatography, proton magnetic resonance and electrospray mass spectrometry order fi nd their molar distribution molecular structures. An biological effectiveness obtained greenhouse vs. Sinapis alba var. Nakielska. promotion with decreased water solubility low vapor pressure active ingredient, instead traditional formulations may help ensure a greater safety for workers reduce risk dissemination ingredient soil profi le.
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