Single-package agricultural formulations combining immediate and

Details Single-package agricultural formulations combining immediate and Single-package agricultural formulations combining immediate and

1991-07-01

1993-06-29

Hollrah, Glennon H.

Plant protecting and regulating compositions

Antidotes

Antidote contains organic nitrogen compound wherein the...

504300, 504135, 71DIG1, A01N 2532, A01N 4712, A01N 4366

Patent

active

052234770

ABSTRACT:
Microcapsule formulations are combined with emulsions or particle dispersions in a single-package formulation which is storage-stable and provides substantially the full efficacy of each of the two forms as if applied individually. The single-package formulation is suspension having two dispersed phases--the first being an active species encapsulated in a shell of inert polymeric diffusion-limiting material (i.e., a microcapsule), and the second being an active species in water-insoluble form with no diffusion-limiting barrier at its surface. An appropriate suspension system is included to prevent the dispersed phases from agglomerating within themselves and with each other. The invention is useful in combining two different active ingredients as well as in combining immediate-delivery and delayed-delivery forms of the same active ingredient. The invention may for example involve combining a biocide with an activity modifier such as a safener, with the effect of lowering the needed amount of one or the other by removing it to a separate phase. In certain cases, a unique combination of surface-active agents maintains the phases in suspension.

REFERENCES:
patent: 3577515 (1971-05-01), Vandegaer
patent: 4140516 (1979-02-01), Scher
patent: 4285720 (1981-08-01), Scher
patent: 4406741 (1977-09-01), Scher
patent: 4643764 (1987-02-01), Scher
patent: 4936901 (1990-06-01), Surgant, Sr. et al.
patent: 4956129 (1990-09-01), Scher et al.
patent: 5049182 (1991-09-01), Scher et al.

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