Chemically stable, insecticidally active phosphoroamidothioate pellet compositions and methods for their manufacture
US6761897B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 20, 2001 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Nov 25, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N57/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Chemically stable, insecticidally active pellets having a low moisture content and at least about 95% active ingredient are described, as well as a method for manufacturing them. The active ingredient is selected from a class of N-hydrocarboyl phosphoroamidothioate and phosphoroamidodithioate compounds as described in the specification. The pellets generally have a moisture content of about 0.5% by weight or less, preferably less than about 0.3% by weight. The pellets can be produced by one of two types of processes as described in detail, including a high pressure axial extrusion process and a low pressure basket extrusion process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.