Preparation of pesticide microcapsule

Details Preparation of pesticide microcapsule Preparation of pesticide microcapsule

1994-06-21

1996-11-19

Levy, Neil S.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

424496, 424502, 264 41, 264 47, 4272133, 514963, A01N 2528

Patent

active

055760082

ABSTRACT:
This invention relates to a novel method for preparing pesticide microcapsules in which the release rate and the release period of the pesticide are controlled. A process has been discovered for encapsulating a trace amount of pesticide with a urea-formaldehyde resin, mechanically stirring the resin in the presence of vegetable oil and the pesticide and reacting the mixture under suitable conditions to form a desired pesticide microcapsule.

REFERENCES:
patent: 3516846 (1970-06-01), Matson
patent: 3993831 (1976-11-01), Vassiliades
patent: 4001140 (1977-01-01), Foris et al.
patent: 4089802 (1978-05-01), Foris et al.
patent: 4353809 (1982-10-01), Hoshi et al.
patent: 4394287 (1983-07-01), Scarpelli
patent: 5160529 (1992-11-01), Scher et al.

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