Aqueous flowable concentrates of particulate water-insoluble pesticides
AssigneeChevron Research Company
InventorsThomas M. Graves, Theodore H. Koundakjian
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Abstract
Flowable aqueous pesticidal concentrates comprising water, 10 to 80% by weight, based on the water, of a water-insoluble solid particulate pesticide and a vinyl alcohol/vinyl acetate polymer having about 5 to 15 mols of vinyl acetate per 100 mols of copolymer and a molecular weight of at least 50,000, wherein the weight ratio of pesticide to copolymer is in the range of 1:1 and 1000:1. These concentrates are compatible with other agricultural chemicals systems. This application is a continuation of application Ser. No. 206,516, filed Dec. 9, 1971 now abandoned, which in turn is a continuation of application Ser. No. 829,769, filed June 2, 1969, now abandoned.
Claims11
A flowable, viscous, aqueous pesticidal concentrate which is compatible with other pesticides on dilution with water consisting essentially of water, 10 to 80% by weight based on the water, of a solid water-insoluble particulate pesticide having a particle size less than 20 microns and a vinyl alcohol/vinyl acetate polymer having about 5 to 15 mols of vinyl acetate per 100 mols of copolymer and a viscosity of 30 to 60 centipoises as measured in a 5% aqueous solution using a Brookfield viscometer with a number 1 spindle at 30 rpm at 20.degree. C, the weight ratio of pesticide to copolymer being in the range of 1:1 and 1000:1.
Dependencies are inferred from the claim text.