Patent · US Active

Process for the working-up of a vitamin E- and vitamin E-acetate-containing mixture or product stream

US8414850B2 · kind B2 · utility

0Cited by

5References

6Claims

0Family size

Assignee

DSM IP ASSETS B.V. · NL

Inventors

Werner Pietzonka · Therwil, CH
Peter Ruckstuhl · Rüti, CH
Angela Wildermann · Kaiseraugst, CH

Key dates

Filing date	Dec 19, 2011
Grant date	Apr 9, 2013
Priority date	—
Expiry date	Dec 19, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P3/02
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A rectification column and system for the working-up of a vitamin E (VE)- and/or vitamin E acetate (VEA)-containing product stream includes purification of a vitamin E-containing product stream, acetylation of at least a part of the purified vitamin E and purification of at least a part of the acetylated vitamin E, the purification of vitamin E and vitamin E acetate preferably being effected by distillation, for example rectification.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.