Agricultural microcapsule and production thereof
AssigneeTakeda Chemical Industries, Ltd.
InventorsKanji Akashi, Chikara Tanabayashi, Kazutaka Kitagawa
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Abstract
The present invention provides microcapsule comprising agricultural active ingredients with improved physical properties, and an agricultural composition comprising said microcapsule. An agricultural microcapsule having a diameter of not more than 50 .mu.m comprises an agricultural active ingredient in a water-soluble coating material. As an agricultural composition comprising said microcapsules, DL dust, solidified emulsifiable concentrate can be provided. According to the present invention, the agricultural active ingredient is stabilized, agricultural dust can be mixed with even incompatible, liquid agricultural active ingredient, and agricultural microcapsule has excellent handling properties.
Claims16
A process for production of an agricultural microcapsule having a diameter of not more than 50 .mu.m, which comprises an agricultural active ingredient in gum arabic, the process comprising:
- (i) dispersing or emulsifying the agricultural active ingredient in a solution dissolving gum arabic to give a mixture wherein the average diameter of a suspended particle in the mixture is from 0.1 .mu.m to 5 .mu.m;
- and
- (ii) spray-drying the mixture.
An agricultural microcapsule having a diameter of not more than 50 .mu.m, which comprises an agricultural active ingredient in gum arabic, wherein the agriculturally active ingredient is an oil at ordinary temperature.
An agricultural composition comprising:
- an agricultural microcapsule having a diameter of not more than 50 .mu.m, which comprises an agriculturally active ingredient in gum arabic;
- and
- an agriculturally useful carrier, wherein the agriculturally active ingredient is an oil at ordinary temperature.
Dependencies are inferred from the claim text.