Pesticidal formulations

Details Pesticidal formulations Pesticidal formulations

2007-07-10

2007-07-10

Pryor, Alton (Department: 1616)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

C514S345000

Reexamination Certificate

active

10363013

ABSTRACT:
Aqueous pesticidal suspensions comprise: (a) 5 to 40% w/v of (i) a pesticide having a melting point in the range of from 50 to 120° C. and a solubility in water of not more than 0.2% w/v or (ii) a mixture of the pesticide (i) and one or more other pesticides having a melting point of at least 50° C. and a solubility in water of not more than 0.2% w/v in the ratio of at least 1 part by weight of the pesticide (i) to 10 parts by weight of the other pesticide or pesticides, (b) 2.5 to 20% w/v of a non-ionic alkoxylate surfactant, (c) 0.5 to 5% w/v of a naphtalene sulphonate-formaldehyde condensate, (d) 0.1 to 5% w/v of a non-ionic polymethyl methacrylate-polyethylene oxide graft copolymer, (e) 0 to 25% w/v of other additives, and (f) water in sufficient amount to bring the total composition to 100% w/v. Pesticidal suspensions formulated in this way show less variation in viscosity than hitherto.

REFERENCES:
patent: 5674517 (1997-10-01), Carpenter
patent: 5948805 (1999-09-01), Geddens et al.
patent: 6277858 (2001-08-01), Walter
patent: 6677399 (2004-01-01), Herbert et al.
patent: 0951831 (1999-10-01), None
patent: 1023832 (2000-08-01), None
patent: 0008931 (2000-02-01), None
patent: WO-00/08931 (2000-02-01), None
S. Haas, H.W. Hasslin & C. Schlatter, “Influence of Polymeric Surfactants on Pesticidal Suspension Concentrates: Dispersing Ability, Milling Efficiency and Stabilization Power,” Colloids Surf., No. 183-185, 2001, pp. 785-793.

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