Production of urea-formaldehyde concentrates
US3970625A · kind A · utility
12Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1974 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Nov 14, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J161/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing an improved urea-formaldehyde concentrate particularly adapted for production of slow-release nitrogenous fertilizers. The improvement is achieved by accurately controlling the buffer strength and the degree of polymerization of the urea-formaldehyde concentrate within specified critical limits. The process can be operated to also produce a different urea-formaldehyde concentrate suitable for use in adhesives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.