Woolgrease
US6420578B1 · kind B1 · utility
5Cited by
2References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/74
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for recovering 18-methyl eicosanoic acid (18-MEA) and/or alpha hydroxy acids (AHAs) from woolwax acids or derivatives thereof comprises the steps of heating the woolwax acids or derivatives thereof to 100 to 230° C. to form estolides and polymeric species; distilling to obtain a distillate (D1) and a residue (R1); and recovering 18-MEA from the distillate and/or recovering AHAs from the residue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.