Patent · US Active

Process for manufacturing a purified aqueous hydrogen peroxide solution

US10647576B2 · kind B2 · utility

0Cited by

4References

18Claims

0Family size

Assignee

SOLVAY SA · BE

Inventors

Juan-Teva Carlier · Tongrinne, BE
Pierre Dournel · Brussels, BE
Henk Venbrux · Tervuren, BE
Hooghe Lieven · Beveren, BE

Key dates

Filing date	Jun 29, 2018
Grant date	May 12, 2020
Priority date	—
Expiry date	Jun 29, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D303/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process includes preparing a crude aqueous hydrogen peroxide solution by auto-oxidation of at least one alkylanthraquinone in a working solution that includes at least one organic solvent and the at least one alkylanthraquinone; and washing the crude aqueous hydrogen peroxide solution with a mixture of at least one organic solvent and an organophosphorous chelating agent to create a purified aqueous hydrogen peroxide solution having less than 100 ppb Cr; wherein the organic solvent used for the washing is not part of the working solution and is not recycled into it.

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