Complex composition resulting from the action of urea on a sulfuric sludge of petroleum origin, process for the preparation thereof and use thereof as a source of fertilizing material
US5470370A · kind A · utility
1Cited by
5References
5Claims
0Family size
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Key dates
| Filing date | Jun 29, 1994 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Jun 29, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C273/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A complex composition formed by the product resulting from the action of urea on a sludge of petroleum origin containing by weight from 50 to 99% of sulfuric acid and from 1 to 20% of organic residues. The acid sludge may contain water and often comes from an alkylation reaction. This composition can be used as a source of fertilizing material or as a component of a fertilizing formulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.