Free-flowing, non-dusting water dispersible granules of a water-insoluble, hydrophobic agriculturally active chemical having low friability and superior crush strength
AssigneeISP Investments Inc.
InventorsKolazi S. Narayanan, Edward Fu
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Abstract
A free-flowing, non-dusting water dispersible granule (WDG) of a water-insoluble, hydrophobic agriculturally active chemical having low friability and superior crush strength for delivery to a desired site as a stable, rainfast suspension in water, without foaming.
Claims8
A wet paste composition for making a free-flowing, non-dusting water dispersible granule having low friability and superior crush strength of a water, insoluble, hydrophobic agriculturally active chemical capable of forming a stable, and active rainfast suspension of said chemical in water, without foaming, for delivery to a desired site by effective disintegration of the granules, comprising, by weight:
- (a) as active component, a water-insoluble, hydrophobic, agriculturally active chemical, 10-90%, optionally, with a filler at the lower end of said range,
- (b) as disintegrant, cross-linked polyvinylpyrrolidone, 1-6%,
- (c) as film-former, a rainfast, water-insoluble polymer, 1-5%,
- (d) as penetrant, a C.sub.8 -C.sub.18 alkyl pyrrolidone, 0.5-10%,
- (e) as suspending agent, an anionic oil soluble surfactant, 0.2-4%,
- (f) as fluidizer for a hydrophilic medium, an aromatic petroleum oil, 1-20%,
- (g) a wetting agent, 1-10%,
- (h) a dispersant, 1-20%, and, optionally
- (i) water, 1-10.
A water dispersible granule having a cone dispersion of less than 55, a Friability Index of greater than 90, and a crush strength of greater than 10.
Dependencies are inferred from the claim text.