Neem oil microemulsion without cosurfactants or alcohols and a process to form the same
US6703034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2001 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Dec 10, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of forming an oil in water microemulsion includes the steps of providing at least one non-ionic ethoxylated surfactant, providing an oil and mixing the surfactant and the oil to form a microemulsion. The surfactant can be selected from the group of alkyl phenol ethoxylates, where the alkyl group contains 8 to 12 carbons and the ethoxylate contains an average of 4 to 12 ethoxylate groups. The surfactant can be a nonyl phenol ethoxylate. An oil in water microemulsion includes at least one non-ionic ethoxylated surfactant and at least one oil. The surfactant can be a single surfactant or a mixed surfactant. The oil can be derived from at least one tree, preferably from as the Neem Tree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.