Formulations of bifenthrin and enriched cypermethrin
View Patent ↗The present invention is directed to novel insecticidal compositions comprising bifenthrin and enriched cypermethrin, the compositions are physically stable when diluted with water.
1. An insecticidal composition comprising:
a) bifenthrin;
b) enriched cypermethrin;
wherein the bifenthrin and the enriched cypermethrin are present in a combined amount of from 0.05% to 30% by weight and the ratio of the bifenthrin to the enriched cypermethrin is from 1/4 to 4/1;
c) one or more aromatic or aliphatic solvents present in a concentration of from 40% to 55%;
d. acetic acid present in a concentration of from 0.01% to 0.15%;
e. a severely solvent refined light and heavy paraffinic petroleum oil present in a concentration of from 20% to 30%;
f. a surfactant blend comprising:
a. an alkylbenzene sulfonate salt present in a concentration of from 1.5% to 4.5%;
b. an ethoxylated castor oil present in a concentration of from 1.5% to 4.5%; and
c. a polyethylene glycol fatty acid ester or ethoxylated fatty acid present in a concentration of from 0.10% to 0.60%;
wherein all % are % by weight based on the total weight.
2. An insecticidal composition of claim 1 , wherein the aromatic solvent is selected from alkylated naphthalene aromatic solvent and alkylated naphthalene depleted aromatic solvent.
3. An insecticidal composition of claim 1 , wherein the alkyl benzene sulfonate salt is selected from the group consisting of branched dodecylbenzene sulfonate, calcium salt and branched dodecylbenzene sulfonate, aminoethylethanolamine salt.
4. An insecticidal composition of claim 1 , wherein the ethoxylated castor oil is selected from ethoxylated castor oils having an EO number of from 20 to 40.
5. An insecticidal composition of claim 1 , wherein the polyethylene glycol fatty acid ester is selected from polyethylene glycol monooleate glycols having an average M n of from 300 to 500.
6. A method for controlling insects comprising applying the composition of claim 1 to a locus where insects are present or are expected to be present.
7. A composition of claim 1 , further comprising at least one additional component selected from an anti-freeze agent, an anti-foam agent and a biocide.