Claims
- 1. A cypermethrin composition consisting of a mixture of the 1S-cis-S, 1R-cis-S, 1S-trans-S, and 1R-trans-S isomers in which the isomers are present in approximately equal concentrations, which contains at least 88% total cypermethrin isomers and at least 80% S-isomers of cypermethrin, and which has a cis/trans ratio in the range of 45/55 to 55/45.
- 2. The product of the reaction of racemic, cis/trans 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid chloride with (cyano)(3-phenoxyphenyl)methanol in which the S/R isomer ratio is at least 9/1.
- 3. A composition comprising a composition of claim 1 in admixture with one or more agriculturally acceptable adjuvants.
- 4. A method of controlling insects which comprises applying to the insects or to the locus in which insects are expected to be found an insecticidally effective amount of a composition of claim 3.
Parent Case Info
This application is a continuation-in-part, of application Ser. No. 646,534, filed Jan. 25, 1991, now abandoned.
US Referenced Citations (10)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
646534 |
Jan 1991 |
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