Fertilizer compositions having slow-release nitrogen compounds and methods of forming thereof
US11905223B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
Inventors
Key dates
| Filing date | Mar 19, 2021 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Mar 19, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P60/21
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods of forming a fertilizer composition having slow-release nitrogen compounds with a molten process are disclosed. The methods include mixing of a polyethylene wax with urea, formaldehyde, and one or more of an acid catalyst and emulsifier to form a molten methylene urea mixture. The contents of the molten methylene urea mixture react to form slow-release nitrogen compounds. Fertilizer compositions formed of, or including, the slow-release nitrogen compounds are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.