Water-redispersible granules including a liquid active material
US6299798A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Water-redispersible granules prepared by drying a water-in-oil emulsion including at least one active material in the form of a hydrophobic liquid; at least one water-soluble compound capable of forming, during the drying process, a solid continuous film in which droplets of the hydrophobic active material are trapped; water; and at least one main surfactant with a binary water-surfactant phase diagram comprising an isotropic phase which is fluid at 25.degree. C. up to a surfactant concentration of at least 50% by weight, followed at higher concentrations by a hexagonal, cubic or lamellar liquid crystal phase that is stable at least up to 65.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.