Liquid-Fertilizer Ready Formulations of Bifenthrin

Abstract

Insecticidal compositions suitable for use in preparation of insecticidal liquid fertilizers are disclosed. The compositions include bifenthrin, a polymeric dispersant, a suspension agent, a freeze-thaw stabilizer, and optionally a preservative.

What is claimed is: 
     
         1 . An insecticidal composition comprising:
 a) bifenthrin;   b) a polymeric dispersant selected from the group consisting of polyacrylic acids, polymethacrylic acids, copolymers thereof, salts thereof, and combinations thereof;   c) a suspension agent selected from the group consisting of attapulgite clay, fumed silica, and combinations thereof,   d) a freeze-thaw stabilizer, and   e) optionally, a preservative.   
     
     
         2 . The composition of  claim 1 , wherein said polymeric dispersant is selected from the group consisting of polyacrylic acids, salts thereof, and combinations thereof. 
     
     
         3 . The composition of  claim 2 , wherein said salt comprises a sodium salt. 
     
     
         4 . The composition of  claim 1 , wherein said suspension agent is fumed silica. 
     
     
         5 . A composition comprising:
 a) from about 15% to about 30% of bifenthrin;   b) from about 0.2% to about 20% of a polymeric dispersant selected from the group consisting of polyacrylic acids, polymethacrylic acids, copolymers thereof, salts thereof, and combinations thereof;   c) from 0% to about 20% of a suspension agent selected from the group consisting of attapulgite clay, fumed silica, and combinations thereof;   d) from about 1% to about 10% of a freeze-thaw stabilizer, and   e) from 0% to about 1% of a preservative,   wherein all % are % by weight based on the total weight of all components in the composition.   
     
     
         6 . The composition of  claim 5 , wherein said polymeric dispersant is selected from the group consisting of polyacrylic acids, salts thereof, and combinations thereof. 
     
     
         7 . The composition of  claim 6 , wherein said salt comprises a sodium salt. 
     
     
         8 . The composition of  claim 5 , wherein said suspension agent is fumed silica. 
     
     
         9 . The composition of  claim 1  further comprising a liquid fertilizer. 
     
     
         10 . The composition of  claim 9 , wherein said liquid fertilizer is aqueous-based. 
     
     
         11 . The composition of  claim 10 , wherein said liquid fertilizer is present in a concentration of about 95.0% by weight to about 99.99% by weight based on the total weight of all components in the composition. 
     
     
         12 . The composition of  claim 11 , wherein bifenthrin is present in about 0.75% to about 1.25%, the polymeric dispersant is present in about 0.1% to about 0.75%, and the suspension agent is present in about 0.05% to about 1.0% by weight based on the total weight of all components in the composition. 
     
     
         13 . The composition of  claim 1 , further comprising at least one additive selected from the group consisting of surfactants, wetting agents, anti-foam agents, preservatives and biocides. 
     
     
         14 . The composition of  claim 5 , further comprising at least one additive selected from the group consisting of surfactants, wetting agents, anti-foam agents, preservatives and biocides. 
     
     
         15 . The composition of  claim 12 , further comprising at least one additive selected from the group consisting of freeze-thaw stabilizers, surfactants, wetting agents, anti-foam agents, preservatives and biocides. 
     
     
         16 . The composition of  claim 1 , wherein said freeze-thaw stabilizer comprises ammonium sulfate. 
     
     
         17 . The composition of  claim 5 , wherein said freeze-thaw stabilizer comprises ammonium sulfate. 
     
     
         18 . The composition of  claim 12 , wherein said freeze-thaw stabilizer comprises ammonium sulfate. 
     
     
         19 . The composition of  claim 1 , wherein said polymeric dispersant comprises a salt of polyacrylic acid, having an average molecular weight between about 1000 and about 100,000 Daltons. 
     
     
         20 . The composition of  claim 5 , wherein said polymeric dispersant comprises a salt of polyacrylic acid, having an average molecular weight between about 1000 and about 100,000 Daltons. 
     
     
         21 . The composition of  claim 12 , wherein said polymeric dispersant comprises a salt of polyacrylic acid, having an average molecular weight between about 1000 and about 100,000 Daltons.