Patent · US Active

Method for handling aqueous methanesulfonic acid solutions

US8728253B2 · kind B2 · utility

3Cited by

5References

6Claims

0Family size

Assignee

BASF SE

Inventors

Stefan Faßbender · Speyer, DE
Peter Petersen · Arlington Heights, US
Arnulf Lauterbach · Ludwigshafen, DE
Gunter Renz · Pfullingen, DE
Frieder Borgmeier · Mannheim, DE
Peter Kolb · Ludwigshafen, DE

Key dates

Filing date	Nov 2, 2010
Grant date	May 20, 2014
Priority date	—
Expiry date	Oct 29, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/0318
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for handling aqueous solutions of methanesulfonic acid (MSA) having a concentration from 50 to 99% by weight of MSA and a total chlorine content of less than 50 mg/kg in apparatuses in which the aqueous MSA solution is in contact with steel surfaces. The steel comprises austenitic steels having a chromium content of from 15 to 22% by weight and a nickel content of from 9 to 15% by weight.

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