Process for the isolation of sterols and/or wax alcohols from tall oil products
US7202372B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2002 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Oct 13, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/74
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for recovering sterols and/or wax alcohols from a crude tall oil based source material comprising sterols and/or wax alcohols in esterified form and fatty and/or rosin acids and optionally sterols and/or wax alcohols in free form, said method comprising the steps of: a) converting free acids in the source material to corresponding salts, b) removing water if present, c) transesterifying the esterified sterols and/or wax alcohols present in the dry material obtained in step a or step b to liberate sterols and/or wax alcohols, d) evaporative fractionating the transesterified material, and e) isolating sterols and/or wax alcohols from the obtained fraction(s) and/or the residue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.