# US 4,400,392 A · Novel acaricide compositions

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,400,392 A
- Document ID: US4400392A
- Status: Granted
- Kind: A
- Application number: 06/382,175
- Filed: 1982-05-26
- Granted: 1983-08-23
- Earliest claimed: 1977-04-06
- Assignees: Roussel Uclaf
- Inventors: Jean J. Herve; Serge Smolikowski
- Web page: https://patentgrep.com/patent/US4400392A

## CPC

- A01N 53/00: Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

Novel acaricide compositions containing as the active ingredient, a synergistic mixture of (S).alpha.-cyano-3-phenoxy-benzyl 1R, cis 2,2-dimethyl-3-(2',2'-dibromovinyl)-cyclopropane-1-carboxylate and either 2,2,2-trichloro-1,1-di-(4-chlorophenyl)-ethanol or a mixed anhydride of benzoic acid and 3-chloro-2,6-dimethoxy-N-ethoxy-benzenecarboximidic acid and to a novel method of combatting acariens.

## Claims

### Claim 1

An acaricidal composition comprised of an acaricidally effective amount of a synergistic mixture of 1.5 to 50 parts by weight of (S).alpha.-cyano-3-phenoxy-benzyl 1R, cis 2,2-dimethyl-3-(2,2'-dibromovinyl)-cyclopropane-1-carboxylate and 100 parts by weight of a mixed anhydride of benzoic acid and 3-chloro-2,6-dimethoxy-N-ethoxy-benzenecarboxyimidic acid and an inert carrier.

### Claim 2 (depends on 1)

A composition of claim 1 wherein the amount of the said (S).alpha.-cyano-3-phenoxy-benzyl ester is 4 to 16 parts by weight.

### Claim 3

A method of combatting acariens comprising contacting the acariens with an acaricidally effective amount of a composition comprised of a synergistic mixture of 1.5 to 50 parts by weight of (S).alpha.-cyano-3-phenoxy-benzyl 1R, cis 2,2-dimethyl-3-(2',2'-dibromovinyl)-cyclopropane-1-carboxylate and 100 parts by weight of a mixed anhydride of benzoic acid and 3-chloro-2,6-dimethoxy-N-ethoxy-benzene-carboximidic acid.

### Claim 4 (depends on 3, 10)

The method of claim 3 wherein a composition of claim 10 is applied at a rate of 100 to 350 g per hectare.