Pre-plant biocide uses of aqueous cyanamides
US10455839B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2016 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Nov 7, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05C7/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Hydrogen cyanamide (HyCyn) is a product derived from calcium cyanamide. Three decades ago HyCyn became commercially available as a plant growth regulator. Sprayed on dormant plants, it provides uniform bud-break. This present invention provides repeatable methods for using aqueous HyCyn, and other similar water-soluble low molecular weight cyanamide or nitrile containing compounds, as stand-alone biocides. Qualities include: safer delivery to field settings, fewer environmental impacts and predictable plant growth improvement. HyCyn with its systemic qualities can act as a fertilizer, desiccant, nematicide, fungicide, herbicide, growth regulator and an agent of enzyme inactivation. These biocidal and other effects appear to be a result of double or triple bonds connecting carbon with nitrogen, and therefore it is expected that other water-soluble low molecular weight compounds having carbon-nitrogen double or triple bonds can act similarly. Today's improved irrigation methods will replace soil fumigation in many settings. All its metabolites, properly delivered, make plants grow better.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.