Microencapsulated insecticide formulations
US8916520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2010 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | May 25, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N25/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Various microencapsulated insecticide formulations for the control of pests such as aphids and beet army worm. These formulations exhibit excellent knockdown activity towards both chewing and non-chewing pests as LD50 values for toxicity in female rats in the range of about 2,500 mgKg−1. Some of these formulations include a wall comprised of a polymer formed, for example, by an interfacial polycondensation of a water soluble monomer and a water insoluble monomer, which at least partially surround an organophosphate insecticide. In some aspects the organophosphate in the microcapsule is chlorpyrifos. The microcapsule have a diameter in the range of about 2 to about 25 micron and the wall has a thickness in the range of about 5 to about 25 nanometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.