Use of water-soluble or water-dispersible, polyether block...

C - Chemistry – Metallurgy – 08 – F

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Details

C08F 283/06 (2006.01) C08F 8/12 (2006.01) C08L 51/00 (2006.01) C08L 51/08 (2006.01) C09D 151/00 (2006.01) C09D 151/08 (2006.01)

Patent

CA 2450386

The invention relates to water-soluble or water-dispersible, film-forming graft polymers which are obtained by radical polymerization of (a) the vinyl esters of aliphatic C1-C24 carboxylic acids in the presence of (b) the polyethers having an average molecular weight (number average) of at least 300 of the general formula (I), wherein the variables independently have the following meanings: R1 represents hydroxy, amino, C1-C24 alkoxy, R9-COO-, R9- NH-COO-, a polyalcohol group; R2 to R7 represent -(CH2)2-, -(CH2)3-, -(CH-2)4- , -CH2-CH(CH3)-, -CH2-CH(CH2-CH3)-, -CH2-CHOR10-CH2-; R8 represents hydrogen, amino-C1-C6 alkyl, C1-C24 alkyl, R9-CO-, R9-NH-CO-; R9 represents C1-C24 alkyl; R10 represents hydrogen, C1-C24 alkyl, R9-CO-; A represents -CO-O-, -CO- B-CO-O, -CO-NH-B-NH-CO-O-; B represents -(CH2)t- or optionally a substituted arylene; n is 1 or, if R1 is a polyalcohol group, n is 1 to 8; s is 0 to 500; t is 1 to 12; u is 1 to 5000; v is 0 to 5000; w is 0 to 5000; x is 1 to 5000; y is 0 to 5000; and z is 0 to 5000. The inventive polymers can be used as coating agents, matrix formers and/or packaging materials for agrochemicals.

L'invention concerne l'utilisation de polymères greffés filmogènes, se dispersant ou solubles dans l'eau, que l'on obtient par polymérisation radicalaire de (a) esters vinyliques d'acides carboniques aliphatiques C¿1?-C¿24? en présence de (b) polyéthers de poids moléculaire moyen (moyenne numérique) d'au moins 300, de formule générale (I), dans laquelle les variables, indépendamment l'une de l'autre, ont la signification suivante: R?1¿ représente hydroxy, amino, alcoxy C¿1?-C¿24?, R?9¿-COO-, R?9¿-NH-COO-, reste de polyalcool; R?2¿ à R?7¿ désignent -(CH¿2?)¿2?-, -(CH¿2?)¿3?-, -(CH-¿2?)¿4?-, -CH¿2?-CH(CH¿3?)-, -CH¿2?-CH(CH¿2?-CH¿3?)-, -CH¿2?-CHOR?10¿-CH¿2?-; R?8¿ signifie hydrogène, alkyle amino-C¿1?-C¿6?, alkyle C¿1?-C¿24?, R?9¿-CO-, R?9¿-NH-CO-; R?9¿ est alkyle C¿1?-C¿24?; R?10¿ signifie hydrogène, alkyle C¿1?-C¿24?, R?9¿-CO-; A désigne -CO-O-, -CO-B-CO-O, -CO-NH-B-NH-CO-O-; B représente -(CH¿2?) ¿t?-, éventuellement aryles substitués; n est 1 ou, lorsque R?1¿ désigne un reste de polyalcool, 1 à 8; s va de 0 à 500; t de 1 à 12; u de 1 à 5000; v de 0 à 5000; w de 0 à 5000; x de 1 à 5000; y de 0 à 5000; z de 0 à 5000. Ces polymères greffés sont utilisés comme agent d'enduction, promoteur matriciel et/ou matériau d'emballage pour produits chimiques agricoles.

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