Insecticidal composition comprising diazinon and process for the preparation thereof
US4851227A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1987 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jul 29, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N57/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides an insecticidal composition comprising Diazinon ensulated in microcapsules, the microcapsules having an encapsulating wall formed essentially from the reaction product of toluene diisocyanate and a polyfunctional amine, and further provides a process for encapsulating Diazinon in a microcapsular formulation comprising providing an aqueous phase containing a non-basic emulsifier, providing an organic phase containing toluene diisocyanate and Diazinon, combining the aqueous and organic phase to form an oil in water emulsion, and adding an aqueous solution of a polyfunctional amine with agitation to the emulsion, whereby the amine reacts with the toluene diisocyanate to form microcapsular envelopes about the Diazinon material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.