Stable concentrates and emulsions of water-insoluble organic pes

Details Stable concentrates and emulsions of water-insoluble organic pes Stable concentrates and emulsions of water-insoluble organic pes

1993-10-27

1996-04-16

Webman, Edward J.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

424407, 424409, 5147724, A01N 2504, A01N 2508, A01N 2524

Patent

active

055080359

ABSTRACT:
Stable emulsions of water-insoluble organic pesticides are formed by mixing the pesticide with an aqueous dispersion of a graft copolymer comprising a reactive polymeric surfactant base polymer and a nonionic hydrophobic grafted composition. The graft copolymer spontaneously absorbs organic pesticides with low water solubility upon simple mixing. The resulting product is much more stable to coalescence than emulsions made with conventional or polymeric surfactants.
Emulsifiable organic based concentrates, having a continuous oil phase, which are formed from admixtures of pesticidally active water-insoluble organic pesticides with graft copolymers can be diluted with or in water, thus, inverting the continuous oil phase to stable water based oil-in-water emulsions of the active pesticide.

REFERENCES:
patent: 3400093 (1968-09-01), Feinberg
patent: 4036788 (1977-07-01), Steckler
patent: 4199363 (1980-04-01), Chen
patent: 4203716 (1980-05-01), Chen
patent: 4303642 (1981-12-01), Kangas
patent: 4337185 (1982-06-01), Wessling et al.
patent: 4470966 (1984-08-01), Costanza et al.
patent: 4544697 (1985-10-01), Pickelman et al.
Rogiers et al., "Novel Trends in Dispersants", Sixth International Congress of Pesticidal Chemistry, Ottawa, Canada, Aug. 10-15, 1986.

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