Plan nutrient based on o,p-ethylene(bis)hydroxyphenyl glycines

C - Chemistry – Metallurgy – 05 – D

Patent

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C05D 9/02 (2006.01)

Patent

CA 2559762

The invention relates to novel mixtures of N,N'-ethylene- bis(hydroxyphenyl)~glycines comprising a mixture of o,p- and o,o-isomers, wherein the ratio of o,p~to o,o-isomer is higher than 0.8 : 1. The novel mixtures have improved characteristics for supplying crop plants with essential metal chelates required as plant nutrients. With the novel mixtures, in particular the short-term supply of metal chelates is improved, while the long term supply is maintained as for known chelating agents comprizing only the o,o-isomer of N,N'-ethylene-bis(hydroxyphenyl)glycine. The invention further refers to metal complexes of the isomer mixture, their use in the field of agriculture as plant nutrient or as component of fertilizers for plants and for treatment of chlorosis in crop plants.

La présente invention concerne de nouveaux mélanges de glycines N,N'-éthylène-bis(hydroxyphényle) qui comprennent un mélange d'isomères o,p- et o,o-, suivant un rapport isomère o,p-/o,o- supérieur à 0,8: 1. Les nouveaux mélanges présentent des caractéristiques améliorées d'apport aux plantes de grande culture des chélates métalliques essentiels nécessaires en tant qu'éléments nutritifs pour les végétaux. Avec ces nouveaux mélanges, l'apport à court terme de chélates métalliques est amélioré, alors que l'apport à long terme est maintenu de manière identique à celui des agents chélateurs connus comprenant uniquement l'isomère o,o- de la glycine N,N'-éthylène-bis(hydroxyphényl). Cette invention se rapporte également à des complexes métalliques du mélange isomère, à leur utilisation dans le domaine de l'agriculture en tant qu'élément nutritif pour les végétaux ou en tant que constituant d'engrais pour les végétaux et pour le traitement de la chlorose atteignant les plantes de grande culture.

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