Hydrophobically modified polysaccharide ethers as deposition enhancers for agricultural active ingredients
View Patent ↗A composition is provided, comprising a non-ionic, water-soluble, hydrophobically modified lower alkyl hydroxyalkyl linear polysaccharide ether, wherein the hydrophobic group comprises a long-chain C10-C18 alkyl or alkenyl group, the lower alkyl group has 1-4 carbon atoms, and the hydroxyalkyl groups are hydroxyethyl and/or hydroxypropyl; and one or more agriculturally active ingredient. A method for treating a plant is also provided, comprising the step of contacting a plant with a composition of the invention.
1. A composition comprising
from 0.005 to 0.4% (w/w) of a non-ionic, water-soluble, hydrophobically modified lower alkyl hydroxyalkyl linear polysaccharide ether, wherein the hydrophobic group comprises a long-chain C10-C18 alkyl or alkenyl group, the lower alkyl group has 1-4 carbon atoms, and the hydroxyalkyl groups are hydroxyethyl and/or hydroxypropyl; and
from 0.005 to 0.5% (w/w) of one or more agriculturally active ingredients.
2. A composition according to claim 1 , wherein said agriculturally active ingredient is selected from the group consisting of pesticides and plant growth regulators.
3. A composition according to claim 1 , comprising at least one pesticide selected from the group consisting of fungicides, herbicides, insecticides, miticides, nematicides, acaricides, and molluscicides.
4. A composition according to claim 1 , comprising at least one pesticide selected from the group consisting of triazoles, strobilurins, benzimidazoles, phenoxy carboxylic acids, benzoic acids, sulfonylureas, pyridine carboxylic acids, neonicotinides, amidines, and pyrethroids, and salts and esters of the acid compounds.
5. A composition according to claim 1 , comprising at least one plant growth regulator selected from the group consisting of abscisic acids, auxins, cytokinins and gibberellins.
6. A composition according to, wherein the linear polysaccharide ether is a cellulose ether having a MS hydrophobe of 0.001-0.02.
7. A composition according to claim 1 wherein said hydrophobic group comprises a long-chain C12-C14 alkyl or alkenyl group.
8. A composition according to claim 1 , wherein the linear polysaccharide ether has a DS alkyl of 0.1-2.5 for the lower alkyl group.
9. A composition according to claim 1 , wherein the linear polysaccharide ether has a MS hydroxyalkyl of 0.2-4.0.
10. A composition according to claim 1 , wherein the linear polysaccharide ether is a cellulose ether having a MS hydroxyethyl of 0.2-4.0.
11. A composition according to claim 1 , wherein the linear polysaccharide ether is a cellulose ether having a MS hydroxypropyl of 0.1-2.0.
12. A composition according to claim 1 wherein the substituents of the non-ionic, water-soluble, hydrophobically modified lower alkyl hydroxyalkyl linear polysaccharide ether have the general formula
where p and q independently are 2, 3 or 4, m is a number between 0-5, x is a number between 0-2, t is a number between 0-5, z is a number between 0-10, R 1 is an alkyl or alkenyl group with 10-18 carbon atoms, and R 2 is an alkyl group with 1-4 carbon atoms or hydrogen, provided the cellulose ether molecule as a whole always comprises substituents where p and/or q are 2 or 3, where x is 1-2, and where m or t is >0.
13. A composition according to claim 12 , wherein R 1 is an alkyl group with 12-14 carbon atoms.
14. A method for the treatment of a plant comprising the step of contacting the plant with an aqueous composition comprising
a non-ionic, water-soluble, hydrophobically modified lower alkyl hydroxyalkyl linear polysaccharide ether, wherein the hydrophobic group comprises a long-chain C10-C18 alkyl or alkenyl group, the lower alkyl group has 1-4 carbon atoms, and the hydroxyalkyl groups are hydroxyethyl and/or hydroxypropyl; and
one or more agriculturally active ingredient.
15. A method according to claim 14 where the composition is sprayed onto the leaves of the plant.
16. A method for improving the deposition on a plant of an aqueous composition comprising from 0.005 to 0.5% (w/w) of at least one agriculturally active ingredient, said method comprising the step of adding to said composition from 0.005 to 0.4% (w/w) of a non-ionic, water-soluble, hydrophobically modified lower alkyl hydroxyalkyl linear polysaccharide ether, wherein the hydrophobic group comprises a long-chain C10-C18 alkyl or alkenyl group, the lower alkyl group has 1-4 carbon atoms, and the hydroxyalkyl groups are hydroxyethyl and/or hydroxypropyl.
17. A method according to claim 14 , wherein the aqueous composition comprises from 0.005 to 0.4% (w/w) of the polysaccharide ether and from 0.005% to 0.5% (w/w) of the agriculturally active ingredient.