Copolymers and their use as drift control agents

Details Copolymers and their use as drift control agents Copolymers and their use as drift control agents

C - Chemistry, Metallurgy

08

F

C08F 220/58 (2006.01) A01N 25/10 (2006.01)

Patent

CA 2400424

The invention relates to copolymers, consisting essentially of between 1 and 90 % by weight of the recurring structural unit of formula (1), wherein R1 represents hydrogen or methyl, Z represents a C1-C4 alkylene group and X represents hydrogen, alkali or ammonium, between 10 and 99 % by weight of a recurring structural unit derived from olefinic unsaturated co-monomers which have at least one oxygen, nitrogen, sulphur or phosphor atom and between 0 and 20 % by weight of cross-linking structures which have been obtained from monomers with at least two olefinic double bonds. Said copolymers are suitable for use as drift control agents for crop protection agents.

Copolymères qui contiennent pour l'essentiel 1 à 90 % en poids de l'unité structurale répétitive de formule (1) dans laquelle R?1¿ représente hydrogène ou méthyle, Z représente un groupe alkylène C¿1?-C¿4? et X représente hydrogène, alcali ou ammonium, 10 à 99 % en poids d'une unité structurale répétitive dérivée de comonomères oléfiniquement insaturés qui comportent au moins un atome d'oxygène, d'azote, de soufre ou de phosphore, ainsi que 0 à 20 % en poids de structures réticulées obtenues à partir de monomères comportant au moins deux doubles liaisons oléfiniques. Ces copolymères sont adaptés en tant qu'agents anti-dérive pour des produits phytosanitaires.

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