Patent · US Active

Process for lightening the color of polyol esters

US8158816B2 · kind B2 · utility

3Cited by

4References

31Claims

0Family size

Assignee

OXEA GMBH · DE

Inventors

Guido D. Frey · Riedstadt, DE
Thorsten Kreickmann · Oberhausen, DE
Tonia Weber · Darmstadt, DE
Heinz Strutz · Usingen, DE

Key dates

Filing date	Oct 6, 2010
Grant date	Apr 17, 2012
Priority date	—
Expiry date	Oct 6, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C67/60
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for lightening the color of polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, wherein the reaction product is worked up without using adsorbents and comprises a treatment with peroxidic compounds and an immediately subsequent steam treatment with subsequent drying.

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