Patent · US Expired

Method of producing dimethyl sulfite

US6423861B1 · kind B1 · utility

0Cited by

2References

8Claims

0Family size

Assignee

BASF SE

Inventors

Klaus Halbritter · Heidelberg, DE
Hans-Josef Sterzel · Schifferstadt, DE
Christian Tragut · Monsheim, DE
Eva Freudenthaler · Strohberg, DE

Key dates

Filing date	Jul 31, 2001
Grant date	Jul 23, 2002
Priority date	—
Expiry date	Jul 31, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C301/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Dimethyl sulfite is prepared by transesterification of a cyclic alkylene sulfite of at least 2 carbon atoms with methanol, in the presence or absence of a catalyst, by a process which is carried out continuously in a column.

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