Highly pure aqueous hydrogen peroxide solutions, method for producing same and their use

US6592840B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Martin Fischer · Ludwigshafen, DE
• Achim Stammer · Freinsheim, DE
• Stefan Quaiser · Schifferstadt, DE

Key dates

• Filing date: Oct 23, 2000
• Grant date: Jul 15, 2003
• Expiry date: Oct 23, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B15/029
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed are a highly pure aqueous hydrogen peroxide solution for use in the electronics industry and a process for the preparation of such solutions, which are essentially free from organics, which comprises catalytically converting hydrogen and oxygen, electrochemically reducing oxygen or electrolyzing an acidic ammonium sulfate solution, in each case in water and with the exclusion of organic compounds and materials which release such compounds.