Patent · US Active

Process for preparing alkanesulfonic acids from sulfur trioxide and an alkane

US9902689B2 · kind B2 · utility

2Cited by

6References

10Claims

0Family size

Assignee

Grillo Chemie GMBH · DE

Inventors

Timo Ott · Ludwigshafen, DE
Ingo Biertümpel · Duisburg, DE
Klaus Bunthoff · Duisburg, DE
Alan K. Richards · Stuart, US

Key dates

Filing date	Nov 13, 2014
Grant date	Feb 27, 2018
Priority date	—
Expiry date	Nov 13, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C303/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing alkanesulfonic acids from sulfur trioxide and an alkane, wherein sulfur trioxide, the alkane and dialkylsulfonoyi peroxide (DASP) react as components, characterized in that the following steps are performed: a) sulfur trioxide is charged in a high-pressure reactor in a condensed phase; b) a temperature of at least 25° C. is set; c) the gaseous alkane is introduced to the high-pressure reactor until a pressure of at least 10 bar is reached; d) dialkylsulfonoyi peroxide (DASP) is added; and e) after a duration of at least 5 hours, the produced alkanesulfonic acid is withdrawn.

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