Stabilization of iodopropynl compounds
US6143204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1998 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Jun 19, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N47/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A highly stable liquid formulation having broad spectrum preservative properties which constitutes an admixture of a dialkanol-substituted DMH, an iodopropynyl compound, a stabilizer of a hydantoin, urea or derivative thereof, and a hydroxyl solvent. Preferably the constituents are dimethyloldimethylhydantoin, 3-iodo-2-propynylbutyl carbamate, dimethylhydantoin, and a glycol solvent. The preservative preferably has a total formaldehyde content of 5% and less than 0.2% of free formaldehyde. The composition is prepared by successively admixing the dialkanol-substituted dimethylhydantoin and the stabilizer, the hydroxyl solvent, and the iodopropynyl compound. Also described is a stabilized iodopropynyl compound preferably containing dimethylhydantoin as the stabilizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.