Patent · US Active

Process for the manufacturing of methane sulfonic acid

US10899705B2 · kind B2 · utility

0Cited by

7References

23Claims

0Family size

Assignee

BASF SE

Inventors

Jan SPIELMANN · Mannheim, DE
Michael ZEILINGER · Ludwigshafen, DE
Juergen Wortmann · Ludwigshafen, DE
Frieder Borgmeier · Mannheim, DE

Key dates

Filing date	May 23, 2018
Grant date	Jan 26, 2021
Priority date	—
Expiry date	May 23, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C315/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for the manufacturing of methane sulfonic acid (MSA) by reaction of a radical initiator composition with methane and sulfur trioxide comprising the steps (a) preparation of the intiator composition by reacting aqueous hydrogen peroxide with the components methane sulfonic acid and methane sulfonic acid anhydride and (b) reaction of the initiator composition from step (a) with sulfur trioxide and methane to form methane sulfonic acid. The invention further relates to the use of methane sulfonic acid anhydride (MSA anhydride) in said process and to methane sulfonic acid manufactured by said process.

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